Sun Jun Task Force revealed the rare earth oxide doped molybdenum alloy grains and intragranular and grain boundary characteristics and particle size effect toughening mechanism, a toughening of quantitative analytical model proposed toughening of nano- doped new ideas . Copper Lead Zinc Tin CNMN.COM.CN nickel , small metal , scrap metal. On this basis , Sun Jun research group has developed a molecular liquid doped rare earth oxides prepared by mixing nano- molybdenum alloy containing key technologies to solve the rare earth oxide nano- technology and non- reunion , and the Molybdenum tube grain internal and uniformly dispersed grain boundaries , as well as nano- ultrafine grain structure constraints such as high temperature stability of development of the sector three "bottleneck" problem. Copper Lead Zinc Tin CNMN.COM.CN nickel , small metal , scrap metal. The prepared alloy oxide having an average particle size of less than 80nm, molybdenum submicron grain size can be , with the extension of molybdenum alloy strength , toughness more than world-class companies have reported similar materials best level , while significantly reducing their plastic brittle transition temperature , and significantly improves the recrystallization temperature of the alloy at elevated temperature and high temperature tensile strength and ductility . Copper Lead Zinc Tin CNMN.COM.CN nickel , small metal , scrap metal.
The project-related technology has been in Jinduicheng Molybdenum Company to achieve a scale applications, has achieved remarkable economic and social benefits , and access to 2012 Department of Education Technology Invention Award . Copper Lead Zinc Tin CNMN.COM.CN nickel , small metal , scrap metal. The research was supported by the National Natural Science Foundation of China and other countries co-financed projects
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2013年9月2日星期一
Qingtian "Warm Winter Action" Towards molybdenum enterprise transformation and upgrading "spring"
March 1, 2013 spring, rebirth . Copper Lead Zinc Tin CNMN.COM.CN nickel , small metal , scrap metal. February 28 , Huang Yang Heung six molybdenum mining companies , four processing plants all started smoothly and achieved major economic indicators in January stable and rapid growth, achieving a "good start ." Copper Lead Zinc Tin CNMN.COM.CN nickel , small metal , scrap metal.
The good news is more than one , since late last year , Huang Yang Mo industrial park construction breakthrough : Longtime Molybdenum Mining Engineering advance construction ; Xingyuan Molybdenum Mining Engineering completed a total investment of 187.6% for the year 2012 ; constant new Molybdenum , Molybdenum XINHONGHUA industry , on the other three adits molybdenum green mine construction enterprises at the provincial level , for 2.4 million yuan of special funds ; Yasumasa molybdenum technology projects completed an investment of 18 million yuan
Huang Yang Molybdenum plate ore business, " recovery" , thanks to the township to carry out service enterprises " warm winter action ." Copper Lead Zinc Tin CNMN.COM.CN nickel , China Nonferrous network, a small metal , scrap metal. This activity is now in full swing , helping to increase efforts in actively carry out and made a series of real results . Copper Lead Zinc Tin CNMN.COM.CN nickel , small metal , scrap metal.
But in the " warm winter action" carried out before , due to the downturn in the external economic situation , Molybdenum tube prices continued to fall and other factors, Qingtian County , Zhejiang Province, molybdenum mining companies encounter " cold" , a number of enterprises operating difficulties caused by funding strand breaks , product unmarketable and other difficulties. Copper Lead Zinc Tin CNMN.COM.CN nickel , small metal , scrap metal.
After hearing the news , Huang Yang township party committee , the government decisively " shot " , implemented since last September , " warm winter action" , including the linkage between government and enterprises , enhance the comprehensive service force ; linkage between banks and enhance financial security force ; village enterprises linkage, enhance social cohesion ; corporate enterprise linkage to enhance transformation source of power and other measures . Copper Lead Zinc Tin CNMN.COM.CN nickel , China Nonferrous network, a small metal , scrap metal.
In the " warm winter action" assistance, the yellow Yangxiang timely development of mining " hing strong rural " practical assistance program , selected seven outstanding cadres stationed corporate office , take the whole program of the enterprise service system , so that early intervention , the person responsible everything, and the implementation of commitments made monthly performance of their duties , given early promise filing, mid- mentioned promise rectification, Connaught end assessment evaluation, form a dynamic commitment management mechanism , improve service performance for the enterprise . Copper Lead Zinc Tin CNMN.COM.CN nickel , small metal , scrap metal. Up to now, to help enterprises solve production and management difficulties and problems 46 . Copper Lead Zinc Tin CNMN.COM.CN nickel , small metal , scrap metal.
Molybdenum mine in Heilongjiang Luming set a "military order " Spring war still intoxicated
February 27, 2013 Heilongjiang Daily cotton hat , thick jacket , cotton shoes, the foot of the vast expanse of snow , behind a cold wind , even though his hands and cheeks were red with cold , but the workers are still operating with rapt attention - this is the Yichun Luming molybdenum plating Co., Ltd. in order to ensure that the project put into operation as soon as possible , the workers at the construction site hardworking scenes.
Recently, the reporter and his party Forestry departure from the iron force , drove more than 50 kilometers , arrived at Deer Forest region Luming Shi industry molybdenum Limited . China Nonferrous network . Into the snow-capped factory, several buildings tall buildings very conspicuous . China Nonferrous network . Site where there are often vehicles shuttling . Workers are snowstorm hit , step up construction , from time to time someone shouted loudly , directing operations.
Luming molybdenum ore mining area of 4.6 square kilometers , has proven the main mineral molybdenite ore 814 million tons , 751,800 tons of molybdenum metal content ; otherwise the amount of 188 million tons of low-grade ore , molybdenum metal content of 86,000 tons , the monomer molybdenum scale ranks first in the country . China Nonferrous network . Project plans to invest 10 billion yuan , the scale was designed to mine 15 million tons of ore , is put into an annual output of 22,500 tons of Molybdenum tube concentrate , can realize output value of 20 billion yuan, profits of 2 billion yuan . China Nonferrous network . Luming molybdenum successful development would provide long-term stability in Yichun large source of revenue , the city has a positive role in promoting economic restructuring . Meanwhile, construction and forestry molybdenum shantytowns combine the iron force Bureau Luming , Larix , Fenglin three forest more than 800 families of workers overall relocation and building a new Luming town .
In the project the main plant , standing about 10 meters from the ground on a platform large ball mill , the reporter saw two huge mill has been installed. China Nonferrous network . Speaking of installation, deputy general manager Zhang Li told a 1 mm of the story: " the 1st mill installation process, the duration of the delay for a month , mainly due to the installation is complete , we found that the entire wheelbase feed end and a discharge end of a difference of 1 mm . China Nonferrous network through communication and manufacturers , but also and foreign data comparison , a difference of 1 mm no major impact on the production of China Nonferrous network , but in order to ensure the accuracy of installation , we held a coordination meeting 20 times , analyze the causes , and ultimately put one millimeter to solve the problem . "
In the system of underground ore crushing construction site, the reporter followed the construction workers , the tunnel along 12 degrees slope , 140 meters before the line in the underground , to the underground construction at 47 meters deep . China Nonferrous network . Deputy project manager at least Bo Jieshao said: "This is the slip to send ore plant, started in March 2012 , is expected to hand over in May 2013 .
At least Bo led the construction team from Shaanxi , he said , more than 200 brothers , like me stick to their posts , the Spring Festival is not home for the holiday .
"Speed up the progress of the project to ensure project quality , and strive to put into trial operation in August this year , China Nonferrous network ." This is Luming molybdenum builders set himself the "military ." China Nonferrous network . For the successful completion of this goal, the company held a coordination meeting construction , combing critical difficulties, the implementation of dynamic management, timely adjust and optimize the program . Currently , mining, mineral processing office building, laboratory building has been put into trial use , plumbing and heating systems have been put into operation, the grinding and processing plant , stone crushing plant, machine automotive systems , substations, high pool and other production and auxiliary housing body completed. The world's largest domestic 320 m3 flotation machine, the nation's largest molybdenum mine mill and other large equipment installation has been completed.
Zhang Li said: Deer molybdenum mine is a daily processing 50,000 tons of large mines, like this large mines in the country, to build three to five years , in foreign countries have 8 to 10 years to complete the construction . China Nonferrous network . And Luming this project, we break the routine, make full use of research and design units and field engineering and technical personnel department of intelligence, from the spring of 2010 feasibility study , preliminary design to the construction site launched simultaneously , is expected to be realized in August 2013 with the test material , by the end of 2013 the first batch of products can be produced
February 27, 2013 Heilongjiang Daily cotton hat , thick jacket , cotton shoes, the foot of the vast expanse of snow , behind a cold wind , even though his hands and cheeks were red with cold , but the workers are still operating with rapt attention - this is the Yichun Luming molybdenum Co., Ltd. in order to ensure that the project put into operation as soon as possible , the workers at the construction site hardworking scenes.
Recently, the reporter and his party Forestry departure from the iron force , drove more than 50 kilometers , arrived at Deer Forest region Luming Shi industry molybdenum Limited . China Nonferrous network . Into the snow-capped factory, several buildings tall buildings very conspicuous . China Nonferrous network . Site where there are often vehicles shuttling . Workers are snowstorm hit , step up construction , from time to time someone shouted loudly , directing operations.
Luming molybdenum ore mining area of 4.6 square kilometers , has proven the main mineral molybdenite ore 814 million tons , 751,800 tons of molybdenum metal content ; otherwise the amount of 188 million tons of low-grade ore , molybdenum metal content of 86,000 tons , the monomer molybdenum scale ranks first in the country . China Nonferrous network . Project plans to invest 10 billion yuan , the scale was designed to mine 15 million tons of ore , is put into an annual output of 22,500 tons of molybdenum concentrate , can realize output value of 20 billion yuan, profits of 2 billion yuan . China Nonferrous network . Luming molybdenum successful development would provide long-term stability in Yichun large source of revenue , the city has a positive role in promoting economic restructuring . Meanwhile, construction and forestry molybdenum shantytowns combine the iron force Bureau Luming , Larix , Fenglin three forest more than 800 families of workers overall relocation and building a new Luming town .
In the project the main plant , standing about 10 meters from the ground on a platform large ball mill , the reporter saw two huge mill has been installed. China Nonferrous network . Speaking of installation, deputy general manager Zhang Li told a 1 mm of the story: " the 1st mill installation process, the duration of the delay for a month , mainly due to the installation is complete , we found that the entire wheelbase feed end and a discharge end of a difference of 1 mm . China Nonferrous network through communication and manufacturers , but also and foreign data comparison , a difference of 1 mm no major impact on the production of China Nonferrous network , but in order to ensure the accuracy of installation , we held a coordination meeting 20 times , analyze the causes , and ultimately put one millimeter to solve the problem . "
In the system of underground ore crushing construction site, the reporter followed the construction workers , the tunnel along 12 degrees slope , 140 meters before the line in the underground , to the underground construction at 47 meters deep . China Nonferrous network . Deputy project manager at least Bo Jieshao said: "This is the slip to send ore plant, started in March 2012 , is expected to hand over in May 2013 .
At least Bo led the construction team from Shaanxi , he said , more than 200 brothers , like me stick to their posts , the Spring Festival is not home for the holiday .
"Speed up the progress of the project to ensure project quality , and strive to put into trial operation in August this year , China Nonferrous network ." This is Luming molybdenum builders set himself the "military ." China Nonferrous network . For the successful completion of this goal, the company held a coordination meeting construction , combing critical difficulties, the implementation of dynamic management, timely adjust and optimize the program . Currently , mining, mineral processing office building, laboratory building has been put into trial use , plumbing and heating systems have been put into operation, the grinding and processing plant , stone crushing plant, machine automotive systems , substations, high pool and other production and auxiliary housing body completed. The world's largest domestic 320 m3 flotation machine, the nation's largest molybdenum mine mill and other large equipment installation has been completed.
Zhang Li said: Deer molybdenum mine is a daily processing 50,000 tons of large mines, like this large mines in the country, to build three to five years , in foreign countries have 8 to 10 years to complete the construction . China Nonferrous network . And Luming this project, we break the routine, make full use of research and design units and field engineering and technical personnel department of intelligence, from the spring of 2010 feasibility study , preliminary design to the construction site launched simultaneously , is expected to be realized in August 2013 with the test material , by the end of 2013 the first batch of products can be produced
New Hualong company director, general manager Dong Xiaojun resign
February 19, 2013 China Nonferrous network - non-ferrous metal authoritative media platform on February 18 evening announcement, the new Hualong company director, general manager Dong Xiaojun resigned for personal reasons, but resigned from the company's strategy committee, nomination committee and his resignation has taken effect .
New Hualong listed in August 2012, about six months ago. Unit 18 closing 13.71 yuan, 14.44 yuan less than the closing price on the first day.
Wind data show that the company's 2011 annual report Dong Xiaojun holds 100 million shares of company stock, not in the top ten shareholders ten tradable shareholders. China Nonferrous network. Dong Xiaojun, born in 1974, served as air conditioning sales company Haier Group Centre Manager, Director of the Company since 2006, general manager, part-time flyover Molybdenum tube legal representative, executive director and general manager, Benxi tungsten and molybdenum legal representative, executive director, the total manager.
New Hualong listed in August 2012, about six months ago. Unit 18 closing 13.71 yuan, 14.44 yuan less than the closing price on the first day.
Wind data show that the company's 2011 annual report Dong Xiaojun holds 100 million shares of company stock, not in the top ten shareholders ten tradable shareholders. China Nonferrous network. Dong Xiaojun, born in 1974, served as air conditioning sales company Haier Group Centre Manager, Director of the Company since 2006, general manager, part-time flyover Molybdenum tube legal representative, executive director and general manager, Benxi tungsten and molybdenum legal representative, executive director, the total manager.
2013年8月30日星期五
Western Mining ten thousand tons dressing plant in Inner Mongolia to achieve pre-production
2013 年 5 Jul 11 China Nonferrous network - non-ferrous metal authoritative media platform 1 May 2013, ten thousand tons of Inner Mongolia and Western Mining Company mill smoothly trial production. China Nonferrous network. After all staff of 60 nights of hard work, constantly commissioning and trial operation with the material on the basis of ten thousand tons strip mill beginning of a full trial, the smooth realization of May 1 trial production goals. China Nonferrous network. The company will be successful test as an opportunity to re-drum drive, even better, go all out as soon as possible the normal types of production targets, and strive to achieve ten thousand tons mill production standards. of molybdenum affected by winter tight supply stage , once rebounded to 1,700 yuan / ton degree horizontal , quarterly average price rose 15% qoq , push up gross margin increased 8.4 percentage points to 26.6% . ( 2 ) a decline in the expense ratio . Current period expenses fell 48% qoq , expense ratio declined 4.2 percentage points to 6.6%. ( 3 ) The effective tax rate decreased by 7 percentage points qoq to 21% .
Molybdenum market volume was light , the cumulative stock price formation on the market outlook or pressure . Molybdenum tube beginning to rebound to 1700 yuan / ton , mainly winter phased supply and demand mismatches . After the Spring Festival , the slow recovery of the downstream demand , the downstream steel prices down, plus molybdenum industry oversupply , resulting in molybdenum and molybdenum prices weak performance , turnover remain light . Late with businesses operating pressure increases
Molybdenum market volume was light , the cumulative stock price formation on the market outlook or pressure . Molybdenum tube beginning to rebound to 1700 yuan / ton , mainly winter phased supply and demand mismatches . After the Spring Festival , the slow recovery of the downstream demand , the downstream steel prices down, plus molybdenum industry oversupply , resulting in molybdenum and molybdenum prices weak performance , turnover remain light . Late with businesses operating pressure increases
2013年8月29日星期四
Domestic molybdenum market risk is still dropping
Shanghai International Molybdenum metal mesh offer this week has fallen / pounds of molybdenum, but according to market participants revealed that this price is not afraid Paul , the transaction price is gradually close to 10 U.S. dollars / pounds of molybdenum. Traders have recently been completed a $ 10.15 / lb Mo deal, he said, buyers want to continue to keep the prices down, frankly transaction price will soon be reduced to 10 dollars / pounds of molybdenum or less, because by the impact of the summer break, the next two months Transaction will be more difficult. Traders also said he had nearly a month without any operate. Yesterday domestic TISCO tender 300 tons of ferro molybdenum, the tender price again fell to 97,000 yuan / ton (semi-acceptance), to bring greater pressure on the future market, the market has already precarious clinging to 9.8 molybdenum ironworks line for nearly a week, but too the tender steel seems to break this pattern, molybdenum prices will continue to decline Molybdenum tube disulfide is a semiconductor manufacturing functional components are required for two-dimensional electron in one of the three materials , they are expected to be made invisible devices based components. In the latest study , the scientists hope to figure out a large and high-quality atom thick sheet of molybdenum disulfide Can the chemical vapor deposition (CVD) furnaces grow and what features they have . They want molybdenum disulfide with no band gap of graphene and hexagonal boron nitride insulator (hBN) binding, thereby making appearances effect transistor logic integrated circuits, photodetectors and flexible optoelectronic devices.
Last year, Rice University mechanical engineering and materials science professor Lou jun ( transliteration ) and Plymouth Kerr ? Ajayan said they successfully produced graphene and hexagonal boron nitride formed complex staggered structure, but in order to use they manufacture of advanced electronic equipment, also need a third material - molybdenum disulfide . However, they said: "The will of molybdenum disulfide and carbon atoms together, we want graphene and molybdenum disulfide ( with hexagonal boron nitride ) combine to create a novel two-dimensional semiconductor parts , but because of their different structures , growth environment is different, so there are a lot of difficulties . "
Last year, Rice University mechanical engineering and materials science professor Lou jun ( transliteration ) and Plymouth Kerr ? Ajayan said they successfully produced graphene and hexagonal boron nitride formed complex staggered structure, but in order to use they manufacture of advanced electronic equipment, also need a third material - molybdenum disulfide . However, they said: "The will of molybdenum disulfide and carbon atoms together, we want graphene and molybdenum disulfide ( with hexagonal boron nitride ) combine to create a novel two-dimensional semiconductor parts , but because of their different structures , growth environment is different, so there are a lot of difficulties . "
Weimin Jiang relieved laugh.
academicians also earnestly hope to rely on these two bases LUANCHUAN put LUANCHUAN playing outstanding technological innovation, strengthen scientific and technological lead and high-end technical support, socio-economic sustainable development and environmentally friendly mining county, not only do Henan science and technology demonstration counties, trying to do more to further the country's scientific and technological demonstration counties.
It is understood that the "Mineral Resources and Geological Environment research base" on the comprehensive utilization of mineral resources, deep prospecting, 3D modeling, build green mining, construction, geological mining parks conducted joint scientific research, and to co-LUANCHUAN as provincial mine fieldwork bases and graduate internship base, start tailings comprehensive utilization of research projects, the Luanchuan integrated exploration, deep exploration into the national "five" strategic prospecting breakthrough strategy. China University of Geosciences (Beijing) also focus on personnel training, introducing driven strategy, focusing on laboratory construction, planning new research institutions, academicians and experts to employ well-known national scientific research LUANCHUAN chair.
"The establishment of research base is to maintain regional sustainable development, alleviate resource bottlenecks useful attempt to improve Luanchuan Geological Survey and Research degree, the implementation of integrated exploration, with great influence on the macro; while improving Luanchuan reputation at home and abroad, the real "China Molybdenum tube are" playing an important cause of lead-zinc polymetallic mineral molybdenum, achieved by mining county to county across the mining industry has an important significance. Cn. "step by step to see the dream become a reality, Weimin Jiang relieved laugh.
It is understood that the "Mineral Resources and Geological Environment research base" on the comprehensive utilization of mineral resources, deep prospecting, 3D modeling, build green mining, construction, geological mining parks conducted joint scientific research, and to co-LUANCHUAN as provincial mine fieldwork bases and graduate internship base, start tailings comprehensive utilization of research projects, the Luanchuan integrated exploration, deep exploration into the national "five" strategic prospecting breakthrough strategy. China University of Geosciences (Beijing) also focus on personnel training, introducing driven strategy, focusing on laboratory construction, planning new research institutions, academicians and experts to employ well-known national scientific research LUANCHUAN chair.
"The establishment of research base is to maintain regional sustainable development, alleviate resource bottlenecks useful attempt to improve Luanchuan Geological Survey and Research degree, the implementation of integrated exploration, with great influence on the macro; while improving Luanchuan reputation at home and abroad, the real "China Molybdenum tube are" playing an important cause of lead-zinc polymetallic mineral molybdenum, achieved by mining county to county across the mining industry has an important significance. Cn. "step by step to see the dream become a reality, Weimin Jiang relieved laugh.
2013年8月28日星期三
Heilongjiang fork molybdenum exploration total reserves of about 246.6775 ten thousand tons
Shanghai metal mesh recently learned that the Heilongjiang provincial key projects - Songling District fork molybdenum lead-zinc polymetallic ore exploration project obtained a new progress, submit Reserves the amount of 1.76 million tons of Molybdenum tube, an average grade of 0.087% molybdenum, molybdenum metal content of 700,000 tons of low-grade, average grade of 0.048% molybdenum, molybdenum totaled approximately 246.6775 million tons; volume of 1 million tons of lead metal and zinc metal content of 140,000 t; silver metal content of 44 tons, became a world-class multi-metal deposit. China Nonferrous network.
Smooth implementation of the project, due to "geological survey team prospecting, private capital first, state-owned enterprises to follow up" prospecting advanced mechanism. China Nonferrous network. According to the project feasibility study report, project design for the annual production capacity of 16.5 million tons of ore mining, at current prices, the annual output value of 4.1 billion yuan, tax 970 million yuan, 82.11 million yuan compensation for mineral resources; direct placement around 1,500 people, 3,000 indirect job placement, economic and social development on Daxinanling extremely important strategic significance. China Nonferrous network. Currently, the project feasibility study report has been organized Heilongjiang Provincial Development and Reform Commission reviewed and approved assessment center project and report to the National Development and Reform Commission.
Smooth implementation of the project, due to "geological survey team prospecting, private capital first, state-owned enterprises to follow up" prospecting advanced mechanism. China Nonferrous network. According to the project feasibility study report, project design for the annual production capacity of 16.5 million tons of ore mining, at current prices, the annual output value of 4.1 billion yuan, tax 970 million yuan, 82.11 million yuan compensation for mineral resources; direct placement around 1,500 people, 3,000 indirect job placement, economic and social development on Daxinanling extremely important strategic significance. China Nonferrous network. Currently, the project feasibility study report has been organized Heilongjiang Provincial Development and Reform Commission reviewed and approved assessment center project and report to the National Development and Reform Commission.
Wu and Er Chu Lu Figure molybdenum
Inner Mongolia found that molybdenum deposit in the amount of 76,000 tonsmetal mesh Inner Mongolia , Shanghai and Seoul Chu Lu Wu Abagaqi map of new mineral deposits discovered a molybdenum , after a preliminary estimate ( 3341 ) of molybdenum ore 1.4 tons, 76,000 tons of molybdenum metal content , to medium- scale deposits .Meanwhile, the mine has a larger looking around molybdenum, copper , gold potential.
It is understood that the deposit is the China Geological Survey Bureau , Tianjin Geological Survey centers in the Inner Mongolia Dongwuqi ruthless Mai ondor copper polymetallic ore district investigation and evaluation of the project and the Inner Mongolia and Uzbekistan Abagaqi Seoul Chu Lu mineral prospects survey project area map when discovered . Wu and Er Chu Lu Figure molybdenum polymetallic mine , 1:50000 geochemical copper , lead, zinc , molybdenum abnormal development , which molybdenum anomaly extends NW direction . See North West Southern surface trending granite , with a green plate rocks of the alteration and limonite , etc. , several copper- lead-zinc mine in northern see alteration fault .
It is understood that the project team in the southeast of the mine construction three drill holes were seen insidious multilayer molybdenum ore body , the cumulative thickness greater than 200 m . Molybdenum ore body located entirely concealed rock inside and outside the contact zone , ore body as a whole was arch -shaped , helmet -shaped , directional control section length 600 m , rock outside the contact zone of molybdenum ore at an average grade of a single 0.061% , with an average vertical thickness of 128.83 meters , metal content 86.9% of the total metal content .
Meanwhile , the project team in the work area north west of copper, lead-zinc construction with a total of 12 trenches and two drill holes . Which found that in five trenches reached a copper cut-off grade lead-zinc body . A hole saw two layer copper ore body , the cumulative vertical thickness of 16.1 meters , another hole saw 8 layer copper ore body , single vertical thickness from 1 to 4 meters , a total vertical thickness of 16.1 meters , and met vertical thickness of one meter lead and zinc body , showing shallow body of lead-zinc , copper lower part of the body zonation inferred buried deep with copper, molybdenum ore bodies.
According to geological features and peripheral Northwest found mine copper and molybdenum mineralization and alteration zone information, combined with molybdenum geochemical anomalies and drilling control insidious characteristics of molybdenum ore body in good agreement inferred orebody north western extension , extension length greater than 3000 m .
See the project team to three Molybdenum tube drill is mainly based on infinite extrapolation along strike 200 meters , 100 meters tendency infinite extrapolation , preliminary estimates meet the minimum requirements of industrial grade of 0.06% molybdenum metal resources ( 3341 ) about 50,700 tonnes grading 0.03 to 0.06 % of the low-grade ore metal resources ( 3341 ) of about 25,200 tons Further drilling along strike control , molybdenum resources is expected to reach the scale of large deposits
It is understood that the deposit is the China Geological Survey Bureau , Tianjin Geological Survey centers in the Inner Mongolia Dongwuqi ruthless Mai ondor copper polymetallic ore district investigation and evaluation of the project and the Inner Mongolia and Uzbekistan Abagaqi Seoul Chu Lu mineral prospects survey project area map when discovered . Wu and Er Chu Lu Figure molybdenum polymetallic mine , 1:50000 geochemical copper , lead, zinc , molybdenum abnormal development , which molybdenum anomaly extends NW direction . See North West Southern surface trending granite , with a green plate rocks of the alteration and limonite , etc. , several copper- lead-zinc mine in northern see alteration fault .
It is understood that the project team in the southeast of the mine construction three drill holes were seen insidious multilayer molybdenum ore body , the cumulative thickness greater than 200 m . Molybdenum ore body located entirely concealed rock inside and outside the contact zone , ore body as a whole was arch -shaped , helmet -shaped , directional control section length 600 m , rock outside the contact zone of molybdenum ore at an average grade of a single 0.061% , with an average vertical thickness of 128.83 meters , metal content 86.9% of the total metal content .
Meanwhile , the project team in the work area north west of copper, lead-zinc construction with a total of 12 trenches and two drill holes . Which found that in five trenches reached a copper cut-off grade lead-zinc body . A hole saw two layer copper ore body , the cumulative vertical thickness of 16.1 meters , another hole saw 8 layer copper ore body , single vertical thickness from 1 to 4 meters , a total vertical thickness of 16.1 meters , and met vertical thickness of one meter lead and zinc body , showing shallow body of lead-zinc , copper lower part of the body zonation inferred buried deep with copper, molybdenum ore bodies.
According to geological features and peripheral Northwest found mine copper and molybdenum mineralization and alteration zone information, combined with molybdenum geochemical anomalies and drilling control insidious characteristics of molybdenum ore body in good agreement inferred orebody north western extension , extension length greater than 3000 m .
See the project team to three Molybdenum tube drill is mainly based on infinite extrapolation along strike 200 meters , 100 meters tendency infinite extrapolation , preliminary estimates meet the minimum requirements of industrial grade of 0.06% molybdenum metal resources ( 3341 ) about 50,700 tonnes grading 0.03 to 0.06 % of the low-grade ore metal resources ( 3341 ) of about 25,200 tons Further drilling along strike control , molybdenum resources is expected to reach the scale of large deposits
2013年8月27日星期二
Add artificial edge that allows atomic layer of molybdenum disulfide neat
Add artificial edge that allows atomic layer of molybdenum disulfide neat growth China Technology Daily News According to physicist organizational networks reported recently, Rice University and Oak Ridge National Laboratory (ORNL) developed in collaboration with scientists a new method that can control the molybdenum disulfide (MDS) consistently neat atomic layer growth, to manufacture two-dimensional electronic device toward a step forward. Research published this week in the "natural. Materials Science" magazine.
Molybdenum disulfide is a semiconductor Molybdenum tube functional components are required for two-dimensional electron in one of the three materials, they are expected to be made invisible devices based components. In the latest study, the scientists hope to figure out a large and high-quality atom thick sheet of molybdenum disulfide Can the chemical vapor deposition (CVD) furnaces grow and what features they have. They want molybdenum disulfide with no band gap of graphene and hexagonal boron nitride insulator (hBN) binding, thereby making appearances effect transistor logic integrated circuits, photodetectors and flexible optoelectronic devices.
Last year, Rice University mechanical engineering and materials science professor Lou jun (transliteration) and Plymouth Kerr? Ajayan said they successfully produced graphene and hexagonal boron nitride formed complex staggered structure, but in order to use they manufacture of advanced electronic equipment, also need a third material - molybdenum disulfide. . However, they said: "The will of molybdenum disulfide and carbon atoms together, we want graphene and molybdenum disulfide (with hexagonal boron nitride) combine to create a novel two-dimensional semiconductor parts, but because of their different structures , growth environment is different, so there are a lot of difficulties.
Molybdenum disulfide is a semiconductor Molybdenum tube functional components are required for two-dimensional electron in one of the three materials, they are expected to be made invisible devices based components. In the latest study, the scientists hope to figure out a large and high-quality atom thick sheet of molybdenum disulfide Can the chemical vapor deposition (CVD) furnaces grow and what features they have. They want molybdenum disulfide with no band gap of graphene and hexagonal boron nitride insulator (hBN) binding, thereby making appearances effect transistor logic integrated circuits, photodetectors and flexible optoelectronic devices.
Last year, Rice University mechanical engineering and materials science professor Lou jun (transliteration) and Plymouth Kerr? Ajayan said they successfully produced graphene and hexagonal boron nitride formed complex staggered structure, but in order to use they manufacture of advanced electronic equipment, also need a third material - molybdenum disulfide. . However, they said: "The will of molybdenum disulfide and carbon atoms together, we want graphene and molybdenum disulfide (with hexagonal boron nitride) combine to create a novel two-dimensional semiconductor parts, but because of their different structures , growth environment is different, so there are a lot of difficulties.
Exchange pessimistic mood , molybdenum prices stabilized difficult
Molybdenum tube market : With the emergence of low-cost market transactions molybdenum , businesses , and market trends are expected to be pulled . Today, 30-38 % of low-grade molybdenum concentrate prices in 1330-1370 yuan / ton degrees ; conventional 40-45 % molybdenum mainstream price 1370-1400 yuan / ton , high grade of 47% or more molybdenum mainstream price 1400-1420 yuan / ton degrees nearby. Luanchuan traders said the market price frequently emerge , some manufacturers to reduce inventory pressure and post- risk , foreign low-cost shipping phenomenon obviously . Middlemen difficult to profit , multi-use "back to back " mode of operation. The latter does not rule out the possibility of further price decline , the market uncomfortable support.
Ferro molybdenum market : With the continuation of raw materials market decline , as well as increased demand deserted , molybdenum market is still under pressure greater . Currently 60 mainstream molybdenum prices remained at 9.5-9.7 yuan / ton near mainstream acceptance 9.8-9.9 yuan / ton. Manufacturers have said that the current production cost of some manufacturers in the 90,000 yuan / tons , the latter , although raw material prices or market lower. It is reported that the current market has low price. Businesses expected worse , some businesses that do not rule out the latter fell below 90,000 yuan / ton possible. Difficult short-term favorable factors to boost the price declines Nanzu .
July 18 LME molybdenum futures offer low maintenance , post volatility or not, in March of molybdenum offer 20,000 / $ 21,000 / ton ; 15 -month molybdenum Quote 20720 / $ 21,720 / ton , LME molybdenum positions of 216 hands. Today newsletter : Ministry urged all localities to report within two weeks revitalize the stock solution ; hair - NDRC official : new urbanization emphasizes institutional change , no central funding ; January to April German exports to China since 1997, the first drop.
The current domestic market deserted molybdenum severe degree higher than last year , some products prices hit new lows . With the aggravation of panic business outlook , as well as some manufacturers inventory increases, prices could stabilize stabilized surviving questioned. Overall, more businesses pessimism darker inside , although market transactions poor condition , but no lack of business cheap goods to go sign. Some still in operation traders take Kuaijinkuaichu way to avoid operational risks . Other molybdenum prices remain low , business orders scarce and difficult to maintain operation. Short-term market difficult to pick up after the summer inside many businesses expect to have improved. We expect that in the business mentality unstable under the influence of the late part of the product prices are still down possible.
Ferro molybdenum market : With the continuation of raw materials market decline , as well as increased demand deserted , molybdenum market is still under pressure greater . Currently 60 mainstream molybdenum prices remained at 9.5-9.7 yuan / ton near mainstream acceptance 9.8-9.9 yuan / ton. Manufacturers have said that the current production cost of some manufacturers in the 90,000 yuan / tons , the latter , although raw material prices or market lower. It is reported that the current market has low price. Businesses expected worse , some businesses that do not rule out the latter fell below 90,000 yuan / ton possible. Difficult short-term favorable factors to boost the price declines Nanzu .
July 18 LME molybdenum futures offer low maintenance , post volatility or not, in March of molybdenum offer 20,000 / $ 21,000 / ton ; 15 -month molybdenum Quote 20720 / $ 21,720 / ton , LME molybdenum positions of 216 hands. Today newsletter : Ministry urged all localities to report within two weeks revitalize the stock solution ; hair - NDRC official : new urbanization emphasizes institutional change , no central funding ; January to April German exports to China since 1997, the first drop.
The current domestic market deserted molybdenum severe degree higher than last year , some products prices hit new lows . With the aggravation of panic business outlook , as well as some manufacturers inventory increases, prices could stabilize stabilized surviving questioned. Overall, more businesses pessimism darker inside , although market transactions poor condition , but no lack of business cheap goods to go sign. Some still in operation traders take Kuaijinkuaichu way to avoid operational risks . Other molybdenum prices remain low , business orders scarce and difficult to maintain operation. Short-term market difficult to pick up after the summer inside many businesses expect to have improved. We expect that in the business mentality unstable under the influence of the late part of the product prices are still down possible.
2013年8月26日星期一
Carbide cutting tools are now new carbon steel equal number of times.
A refractory hard metal compound and a bonding metal by powder Molybdenum tube process made of an alloy material. Carbide with high hardness, wear resistance, strength and toughness, heat resistance, corrosion resistance and a series of excellent performance, especially its high hardness and wear resistance, even at 500 ℃ temperature also remained unchanged , at 1000 ℃ still very high hardness.Carbide is widely used as a tool material, such as turning, milling, planer, drill, boring knives for cutting cast iron, nonferrous metals, plastics, chemical fiber, graphite, glass, stone and ordinary steel can also be used to cut heat-resistant steel, stainless steel, high manganese steel, tool steel and other difficult to machine materials. Carbide cutting tools are now new carbon steel equal number of times.
Carbide with high hardness, strength, wear resistance and corrosion resistance, known as the "industrial teeth", for the manufacture of cutting tools, cutting tools, drilling tools and wear parts, widely used in military, aerospace , machining, metallurgy, oil drilling, mining tools, electronic communications, construction and other fields, with the development of downstream industries, carbide market demand is increasing continuously. . And future high-tech weapons and equipment manufacturing, advanced scientific and technological progress as well as the rapid development of nuclear energy, will greatly improve the stability of high-tech and high-quality carbide products. According to the analysis, from the "2013-2017 China Cemented Carbide Industry Market Outlook and Investment Analysis Strategic Planning Report," 2015 production will reach our carbide 30,000 tons of industrial output value reached about 23 billion yuan.
Feature
It belongs to the non-destructive testing, test method is relatively simple. W. Carbide hardness test specimen of its shape and size adaptability, test efficiency. . In addition, carbide hardness and other physical properties of materials, there is a certain relationship between the. For example, the carbide hardness test and tensile test are basically detect metal plastic deformation resistance capacity, which both tests are, in some similar characteristics detection of metal. . Therefore, the test results are compared with each other completely. Carbide tensile test equipment is huge, complex operation, to sample preparation, testing efficiency is low, for many metals, has a hardness test and tensile test conversion tables to be investigated. Therefore, the mechanical properties of carbide materials testing, people increasingly using hardness test, and less by tensile tests.
Tool
Carbide hardness is generally used scale Rockwell hardness HRA or Vickers hardness tester to detect, practical people mainly used in Rockwell hardness test Hardness HRA. PHR Series Portable Rockwell hardness tester is suitable for testing the hardness of cemented carbide. . This instrument weighs only 0.7kg, the accuracy and the same desktop Rockwell hardness. Carbide measuring hardness, Star company's PHR Series Portable Rockwell Hardness Tester can test the thickness or diameter of less than 50mm carbide workpiece, you can test a small diameter to 2.0mm carbide workpiece diameter smaller than can be tested 30mm tubular carbide workpieces. You can also at the production site and sales site or materials warehouses. The instrument used to test the carbide workpiece is simple, fast, non-destructive, can be finished or semi-finished products for the bulk of the work done by piece carbide hardness testing
Carbide with high hardness, strength, wear resistance and corrosion resistance, known as the "industrial teeth", for the manufacture of cutting tools, cutting tools, drilling tools and wear parts, widely used in military, aerospace , machining, metallurgy, oil drilling, mining tools, electronic communications, construction and other fields, with the development of downstream industries, carbide market demand is increasing continuously. . And future high-tech weapons and equipment manufacturing, advanced scientific and technological progress as well as the rapid development of nuclear energy, will greatly improve the stability of high-tech and high-quality carbide products. According to the analysis, from the "2013-2017 China Cemented Carbide Industry Market Outlook and Investment Analysis Strategic Planning Report," 2015 production will reach our carbide 30,000 tons of industrial output value reached about 23 billion yuan.
Feature
It belongs to the non-destructive testing, test method is relatively simple. W. Carbide hardness test specimen of its shape and size adaptability, test efficiency. . In addition, carbide hardness and other physical properties of materials, there is a certain relationship between the. For example, the carbide hardness test and tensile test are basically detect metal plastic deformation resistance capacity, which both tests are, in some similar characteristics detection of metal. . Therefore, the test results are compared with each other completely. Carbide tensile test equipment is huge, complex operation, to sample preparation, testing efficiency is low, for many metals, has a hardness test and tensile test conversion tables to be investigated. Therefore, the mechanical properties of carbide materials testing, people increasingly using hardness test, and less by tensile tests.
Tool
Carbide hardness is generally used scale Rockwell hardness HRA or Vickers hardness tester to detect, practical people mainly used in Rockwell hardness test Hardness HRA. PHR Series Portable Rockwell hardness tester is suitable for testing the hardness of cemented carbide. . This instrument weighs only 0.7kg, the accuracy and the same desktop Rockwell hardness. Carbide measuring hardness, Star company's PHR Series Portable Rockwell Hardness Tester can test the thickness or diameter of less than 50mm carbide workpiece, you can test a small diameter to 2.0mm carbide workpiece diameter smaller than can be tested 30mm tubular carbide workpieces. You can also at the production site and sales site or materials warehouses. The instrument used to test the carbide workpiece is simple, fast, non-destructive, can be finished or semi-finished products for the bulk of the work done by piece carbide hardness testing
2013年8月25日星期日
olybdenum prices rose steadily vendor stable production
Molybdenum tube from the recent weakness of the domestic market price of view, the market for the better, the domestic primary ore-type molybdenum oxide prices have been from the previous 2,150 yuan / ton degrees increased to 2300-2400 yuan / ton level, the situation remains relatively stable turnover . By molybdenum prices, molybdenum prices and other favorable factors supporting strong, the recent domestic molybdenum market conditions continue to increase steadily.
Huludao a processing plant to the site said, by the impact of rising international prices, buyers began to focus on domestic supply, sellers are now easier than the original, and for just this up speed or recognition, he also said that the supply from the market look, most manufacturers of spot trading is not a lot, they are now largely stable production, the recent market is still confident.220 From today's point of view molybdenum manufacturers offer ferro molybdenum prices continued to firm. Today, quoted in Zhengzhou 162000 / ton, quoted in Hebei 16.2-16.5 million / ton221 molybdenum products week in review and forecast next week
From this week's molybdenum market situation, product prices overall rose. I found that since entering in July, the month molybdenum prices rise faster than the January-June. The presence prominent spot shortages of raw materials market situation, this week, the price of molybdenum is rising every day, the majority of the mentality of miners bullish market outlook is more intense, and for spot sales are very cautious. Market supply is limited
Huludao a processing plant to the site said, by the impact of rising international prices, buyers began to focus on domestic supply, sellers are now easier than the original, and for just this up speed or recognition, he also said that the supply from the market look, most manufacturers of spot trading is not a lot, they are now largely stable production, the recent market is still confident.220 From today's point of view molybdenum manufacturers offer ferro molybdenum prices continued to firm. Today, quoted in Zhengzhou 162000 / ton, quoted in Hebei 16.2-16.5 million / ton221 molybdenum products week in review and forecast next week
From this week's molybdenum market situation, product prices overall rose. I found that since entering in July, the month molybdenum prices rise faster than the January-June. The presence prominent spot shortages of raw materials market situation, this week, the price of molybdenum is rising every day, the majority of the mentality of miners bullish market outlook is more intense, and for spot sales are very cautious. Market supply is limited
2013年8月23日星期五
Pyrolytic carbon molybdenum alloy for injection molding properties and microstructure of two people reading
Prepared by powder injection molding Mo-Ti-Zr alloys, studies on thermal decomposition of carbon-molybdenum alloys and organizational impact. The results show that the carbon content is low, the alloy density is increased, and the carbon to form the dispersed second phase particles, such alloys have been strengthened; the carbon content is high, it is easy to add the elements molybdenum plating substrate and brittle second phase formed by the reaction particles, these second-phase particles in the fracture under tensile stress, coupled with the injection of the sample itself, there are more holes, cracks easily become a source of the alloy decrease in performance. Pyrolytic carbon can effectively prevent impuritiesowever, molybdenum has a low temperature brittleness, low strength, ductility and poor is insufficient, molybdenum alloy deep processing more difficult, its application is more restricted. Over the years, the production of Molybdenum Molybdenum primary products. Therefore, the development with better performance, higher value-added molybdenum alloys, molybdenum industry for the development of our country has an important significance.
Sun Jun engineering research group from the actual needs, dating back to the difficulty of material preparation techniques, revealing the rare earth oxide doped Molybdenum tube alloy grains and intragranular and grain boundary
Sun Jun engineering research group from the actual needs, dating back to the difficulty of material preparation techniques, revealing the rare earth oxide doped Molybdenum tube alloy grains and intragranular and grain boundary
while the tensile ductility doubled
In the National Natural Science Foundation and other projects funded by the [1] Materials, Xi'an Jiaotong University, State Key Laboratory Sun Jun Task Force successfully developed nano-structured dispersion strengthened molybdenum alloys. The material has a rare earth oxide nano-particles and ultrafine-grained microstructure reinforced structure, while the tensile ductility doubled.
China's molybdenum reserves, production and consumption volume ranking first in the world. Molybdenum is widely used in stainless steel and other materials for the production of steel, molybdenum alloys also because of their excellent thermal conductivity with a high temperature and other characteristics, in the aerospace, machinery, metallurgy and other fields has broad application prospects.
However, molybdenum has a low temperature brittleness, low strength, ductility and poor is insufficient, molybdenum alloy deep processing more difficult, its application is more restricted. Over the years, the production of Molybdenum Molybdenum primary products. Therefore, the development with better performance, higher value-added Molybdenum tube alloys, molybdenum industry for the development of our country has an important significance.
Sun Jun engineering research group from the actual needs, dating back to the difficulty of material preparation techniques, revealing the rare earth oxide doped molybdenum alloy grains and intragranular and grain boundary characteristics and particle size effect toughening mechanism, a robust of quantitative analytical model and proposed toughening of nano-doped new ideas.
On this basis, the researchers developed a molecular liquid doped rare earth oxides prepared by mixing nano-molybdenum alloy containing key technologies to solve the rare earth oxide nano-and non-reunion of the molybdenum grains and grain boundaries uniformly dispersed and nano ultrafine grain structure constraints such as high temperature stability of development of the sector three key issues. They prepared molybdenum alloy strength and extension, than has been reported toughness international class companies best level similar materials, while significantly lower plastic brittle transition temperature, high alloy recrystallization temperature and high temperature tensile strength and ductility significantly.
It is reported that the relevant technologies have to achieve industrial-scale applications, the project also received the 2012 Ministry of Education, Technological Invention Award.
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China's molybdenum reserves, production and consumption volume ranking first in the world. Molybdenum is widely used in stainless steel and other materials for the production of steel, molybdenum alloys also because of their excellent thermal conductivity with a high temperature and other characteristics, in the aerospace, machinery, metallurgy and other fields has broad application prospects.
However, molybdenum has a low temperature brittleness, low strength, ductility and poor is insufficient, molybdenum alloy deep processing more difficult, its application is more restricted. Over the years, the production of Molybdenum Molybdenum primary products. Therefore, the development with better performance, higher value-added Molybdenum tube alloys, molybdenum industry for the development of our country has an important significance.
Sun Jun engineering research group from the actual needs, dating back to the difficulty of material preparation techniques, revealing the rare earth oxide doped molybdenum alloy grains and intragranular and grain boundary characteristics and particle size effect toughening mechanism, a robust of quantitative analytical model and proposed toughening of nano-doped new ideas.
On this basis, the researchers developed a molecular liquid doped rare earth oxides prepared by mixing nano-molybdenum alloy containing key technologies to solve the rare earth oxide nano-and non-reunion of the molybdenum grains and grain boundaries uniformly dispersed and nano ultrafine grain structure constraints such as high temperature stability of development of the sector three key issues. They prepared molybdenum alloy strength and extension, than has been reported toughness international class companies best level similar materials, while significantly lower plastic brittle transition temperature, high alloy recrystallization temperature and high temperature tensile strength and ductility significantly.
It is reported that the relevant technologies have to achieve industrial-scale applications, the project also received the 2012 Ministry of Education, Technological Invention Award.
Edit this paragraph
2013年8月22日星期四
extrusion glass lubricant lubrication.
Cast for crushing coarse grain, improve ingot processing performance, can also be used to produce tubes, rods and profiles. In order to fully cast grain crushing, extrusion ratio should not be less than 4, the extrusion temperature is usually between 1100 ~ 1315 ℃. If it is directly obtained by extrusion products and intermediate products shall adopt greater extrusion ratio and higher extrusion temperature. To extend the die life and the dimensions and surface quality assurance products should be used or a zirconia refractory Molybdenum tube oxide coating die, extrusion glass lubricant lubrication.
Forging
Including swaging and general forging. Mainly for the production of swaged over 2.5 mm diameter rods and pull the wire drawing of the blank material, the use of the blank 10 to 30 mm square sintered article. Pure molybdenum swaged forging temperature often open about 1400 ℃, pass deformation is generally 10 to 20%, also up 30%. As the diameter decreases, the temperature gradually decreased forging 3 mm diameter can be reduced to about 800 ℃. For ordinary forging, the forging press forging is more desirable than. General availability of large forging billet and large forgings. Pure molybdenum open forging temperature of about 1400 ℃, while the extruded billet billet open open forging temperature can be lower. Free forging pay attention to safety, to prevent the workpiece or fragments flying out.
Rolling
For sheet, strip, foil and bar production. Rolling smelting - extruding the billet to provide the initial rolling temperature is generally between 1200 ~ 1250 ℃; powder blank provided the initial rolling temperature is generally at about 1400 ℃. To reduce the non-uniform deformation, the roughing pass deformation should be 20 to 40%, and the total rolling time after heating deformation of about 75%. When the amount exceeds 85% of total deformation (thickness of about 6 mm), the rolling temperature can be reduced to 700 ~ 900 ℃; thickness of 1 to 2 mm, the rolling temperature can be reduced to 200 ~ 400 ℃. The plastic based material - brittle transition temperature type, the transition to the cold rolling sheet thickness of 0.5 to 1 mm. Cross-rolled products can be used to improve the anisotropy. Hardening to obtain sufficient plasticity and improve the low temperature, the appropriate amount of cold working the end product should be 70% or so.
Mainly in the processing of molybdenum tubing pipe sintered ingots as extrusion ingots or billets, using temperature processing technology, by rolling, drawing or spinning into various pipe. China used to produce small diameter warm rolling molybdenum tube. Blooming temperature is generally about 650 ℃, the final rolling temperature is about 350 ℃. Warm rolling pass processing rate is generally 20 to 35%, up to 40%. For a diameter of 8 mm, wall thickness of 0.5 mm molybdenum tube, the tube can be rolled up to 6500 mm. Have a good warm-rolled molybdenum tube inner and outer surfaces, good room temperature ductility and further pulled into the capillary. Large diameter thin-walled tube for general use extruded or sintered tube and then by spinning processing.
Forging
Including swaging and general forging. Mainly for the production of swaged over 2.5 mm diameter rods and pull the wire drawing of the blank material, the use of the blank 10 to 30 mm square sintered article. Pure molybdenum swaged forging temperature often open about 1400 ℃, pass deformation is generally 10 to 20%, also up 30%. As the diameter decreases, the temperature gradually decreased forging 3 mm diameter can be reduced to about 800 ℃. For ordinary forging, the forging press forging is more desirable than. General availability of large forging billet and large forgings. Pure molybdenum open forging temperature of about 1400 ℃, while the extruded billet billet open open forging temperature can be lower. Free forging pay attention to safety, to prevent the workpiece or fragments flying out.
Rolling
For sheet, strip, foil and bar production. Rolling smelting - extruding the billet to provide the initial rolling temperature is generally between 1200 ~ 1250 ℃; powder blank provided the initial rolling temperature is generally at about 1400 ℃. To reduce the non-uniform deformation, the roughing pass deformation should be 20 to 40%, and the total rolling time after heating deformation of about 75%. When the amount exceeds 85% of total deformation (thickness of about 6 mm), the rolling temperature can be reduced to 700 ~ 900 ℃; thickness of 1 to 2 mm, the rolling temperature can be reduced to 200 ~ 400 ℃. The plastic based material - brittle transition temperature type, the transition to the cold rolling sheet thickness of 0.5 to 1 mm. Cross-rolled products can be used to improve the anisotropy. Hardening to obtain sufficient plasticity and improve the low temperature, the appropriate amount of cold working the end product should be 70% or so.
Mainly in the processing of molybdenum tubing pipe sintered ingots as extrusion ingots or billets, using temperature processing technology, by rolling, drawing or spinning into various pipe. China used to produce small diameter warm rolling molybdenum tube. Blooming temperature is generally about 650 ℃, the final rolling temperature is about 350 ℃. Warm rolling pass processing rate is generally 20 to 35%, up to 40%. For a diameter of 8 mm, wall thickness of 0.5 mm molybdenum tube, the tube can be rolled up to 6500 mm. Have a good warm-rolled molybdenum tube inner and outer surfaces, good room temperature ductility and further pulled into the capillary. Large diameter thin-walled tube for general use extruded or sintered tube and then by spinning processing.
hafnium carbide particles in the precipitation
Industrial production can be divided Molybdenum tube alloy Mo-Ti-Zr-based, Mo-W series and Mo-Re alloys, and hafnium carbide particles in the precipitation strengthening Mo-Hf-C based alloy. TZM alloy has excellent performance, is the most widely used molybdenum alloy. TZC (Mo-1.25 Ti-0.15 Zr-0.15C) TZM alloy has a higher temperature than the strength and the recrystallization temperature, but the processing difficulties, application is limited.
Molybdenum alloys and solder brittleness and low temperature brittleness temperature oxidation and other shortcomings, so the development is restricted. Alloying method using molybdenum alloy is difficult to improve the high temperature oxidation resistance, but at present, with a protective coating to improve this performance. Molybdenum alloys in the study of the problem is to improve the high temperature strength and the recrystallization temperature, to improve the low-temperature plastic material. Pure molybdenum material in the study of the problem is to improve the low-temperature ductility, i.e. reduce its plasticity - brittle transition temperature.
Molybdenum alloy is the main way to strengthen the solid solution strengthening, precipitation strengthening and hardening (see metal reinforced). Titanium, molybdenum, zirconium, and hafnium is the main alloying elements. Molybdenum alloying elements on the hardness of the rolling bar chart next page. Titanium, zirconium and hafnium can not only solid solution strengthening and maintaining the low-temperature plastic material, and can form a stable, dispersed carbide phase, to improve the strength and recrystallization temperature.
Interstitial impurities carbon, nitrogen, oxygen especially plastic - brittle transition temperature have serious implications. Their very low solubility in molybdenum (at room temperature of not more than 1ppm), excess interstitial elements molybdenum compound places distributed around the grain boundaries and reduce grain boundary strength, resulting in brittle intergranular fracture. Molybdenum alloy with traces of boron can refine the grain, clean grain boundaries and change the grain boundary morphology, thereby increasing the plasticity of molybdenum: adding trace elements such as iron and yttrium can also improve low-temperature plasticity (see screen). 1955 Mladic (G.Geach) and Hughes (J.Hughes) found that rhenium can significantly improve the ductility of molybdenum and tungsten, molybdenum make plastic - brittle transition temperature down to -200 ℃.
Molybdenum alloys and solder brittleness and low temperature brittleness temperature oxidation and other shortcomings, so the development is restricted. Alloying method using molybdenum alloy is difficult to improve the high temperature oxidation resistance, but at present, with a protective coating to improve this performance. Molybdenum alloys in the study of the problem is to improve the high temperature strength and the recrystallization temperature, to improve the low-temperature plastic material. Pure molybdenum material in the study of the problem is to improve the low-temperature ductility, i.e. reduce its plasticity - brittle transition temperature.
Molybdenum alloy is the main way to strengthen the solid solution strengthening, precipitation strengthening and hardening (see metal reinforced). Titanium, molybdenum, zirconium, and hafnium is the main alloying elements. Molybdenum alloying elements on the hardness of the rolling bar chart next page. Titanium, zirconium and hafnium can not only solid solution strengthening and maintaining the low-temperature plastic material, and can form a stable, dispersed carbide phase, to improve the strength and recrystallization temperature.
Interstitial impurities carbon, nitrogen, oxygen especially plastic - brittle transition temperature have serious implications. Their very low solubility in molybdenum (at room temperature of not more than 1ppm), excess interstitial elements molybdenum compound places distributed around the grain boundaries and reduce grain boundary strength, resulting in brittle intergranular fracture. Molybdenum alloy with traces of boron can refine the grain, clean grain boundaries and change the grain boundary morphology, thereby increasing the plasticity of molybdenum: adding trace elements such as iron and yttrium can also improve low-temperature plasticity (see screen). 1955 Mladic (G.Geach) and Hughes (J.Hughes) found that rhenium can significantly improve the ductility of molybdenum and tungsten, molybdenum make plastic - brittle transition temperature down to -200 ℃.
wire and rods only industrial production methods
1910 has started using powder metallurgy production of molybdenum products. 1945 has been manufacturing powder metallurgy molybdenum sheet, wire and rods only industrial production methods. The mid-1940s the United States Parker (RParke) and Hamm (JLHam) developed into a consumable arc melting process of preparing high performance molybdenum and Molybdenum tube alloy ingots approach. The late 1940s to the mid-1960s, in order to meet the nuclear, aviation and aerospace technology needs, molybdenum alloys and related processes have been extensively studied, developed Mo-0.5Ti-0.02C alloy, Mo-0.5Ti-0.1Zr-0.02 C (TZM) alloys. The late 1960s to the early 1970s and made from higher-strength Mo-Hf-C alloys. China began in the late 1950s produced by powder metallurgy blank molybdenum products. After two kinds of powder metallurgy and smelting and alloy billet production of molybdenum rod, wire, sheet, foil, tubes and rectangular tubing.as well as for the production of die-casting and extrusion dies, spacecraft parts. Because molybdenum alloy welding low temperature brittleness and fragility, and the high-temperature oxidation, so their development is restricted. Industrial production of molybdenum alloys, molybdenum and titanium zirconium, molybdenum, tungsten and molybdenum, rare earth alloy, used more often is the first class. Molybdenum alloy is the main way to strengthen the solid solution strengthening, precipitation strengthening and work hardening. Can be obtained through the plastic processing molybdenum alloy sheet, strip, foil, tubes, rods, wire and profiles, but also improve its strength and improve the low temperature ductility.
2013年8月21日星期三
Tungsten ore market continues to weaken, tungsten carbide continued weak demand
Core Tip: tungsten ore market continues to weaken, the downstream smelting enterprises are still watching the market temporarily, procurement is not active, is expected to post or re-slipped; Carbide continued weakness in demand, coupled with the decline in prices of raw materials, manufacturers offer slightly reduced.
Tungsten market: tungsten ore market continues to weaken, the downstream smelting enterprises are still watching the market temporarily, procurement is not active, is expected to post or re-slipped; Carbide continued weakness in demand, coupled with falling prices of raw materials, manufacturers offer slightly lower; scrap tungsten overall turnover downturn, the business mentality is difficult to continue to firm, began to cut some scrap quotations, scrap tungsten steel temporarily remain steady, we expect more than short-term market will continue to scrap tungsten weak adjusted.
Molybdenum tube market: Western Europe molybdenum market prices began to fall, but the overall will remain steady run, and this trend will continue until stable in early September. Molybdenum Molybdenum robust domestic market before the trip, many investors continue to maintain a wait and see. Some businesses tentative price adjustment, the actual turnover situation did not change. Businesses bullish atmosphere enriched, hope rose strong psychological. But later the molybdenum market or difficult to have greater volatility.
Tungsten market: tungsten ore market continues to weaken, the downstream smelting enterprises are still watching the market temporarily, procurement is not active, is expected to post or re-slipped; Carbide continued weakness in demand, coupled with falling prices of raw materials, manufacturers offer slightly lower; scrap tungsten overall turnover downturn, the business mentality is difficult to continue to firm, began to cut some scrap quotations, scrap tungsten steel temporarily remain steady, we expect more than short-term market will continue to scrap tungsten weak adjusted.
Molybdenum tube market: Western Europe molybdenum market prices began to fall, but the overall will remain steady run, and this trend will continue until stable in early September. Molybdenum Molybdenum robust domestic market before the trip, many investors continue to maintain a wait and see. Some businesses tentative price adjustment, the actual turnover situation did not change. Businesses bullish atmosphere enriched, hope rose strong psychological. But later the molybdenum market or difficult to have greater volatility.
2013年8月20日星期二
Tungsten weaker outlook fell less space
Core Tip: tungsten weaker prices continued to remain low, the market is big difference, having a little downside. Primary molybdenum businesses hold goods to be up, the market operation is relatively calm, thin trading, offer high trend.
Tungsten market: tungsten weaken, prices continued to remain low, the market is big difference, wolframite 13.7-14.3 yuan / ton between the quotes and recent market outlook fell less space; tungsten carbide weak demand, turnover from the previous less; sodium tungstate start low; scrap tungsten prices steady turnover weakened or slipped.
Molybdenum tube market: recent steel tender relatively few, weak demand is difficult to play a supporting role on the market. Primary molybdenum businesses hold goods to be up, the market operation is relatively calm, thin trading, offer high trend. Downstream molybdenum chemicals and molybdenum deep processing products, such as market inquiry yet to see improvement, we expect short-term market trend remained stable molybdenum.According to research, at present more than 60 degrees wool wolframite ore price 1.78 yuan / kWh nearby and procurement needs less; business confidence, traders are afraid to purchase tungsten, fearing heart harder shots. And due to lack of demand and financial pressure, cash transactions of small quantities of tungsten, the price even lower than the gross price is also mine.
According to the analysis is expected this week, Minmetals if not taken any purchasing and storage plan, or tungsten concentrate prices this week due to lack of demand for support and fell again.
Tungsten market: tungsten weaken, prices continued to remain low, the market is big difference, wolframite 13.7-14.3 yuan / ton between the quotes and recent market outlook fell less space; tungsten carbide weak demand, turnover from the previous less; sodium tungstate start low; scrap tungsten prices steady turnover weakened or slipped.
Molybdenum tube market: recent steel tender relatively few, weak demand is difficult to play a supporting role on the market. Primary molybdenum businesses hold goods to be up, the market operation is relatively calm, thin trading, offer high trend. Downstream molybdenum chemicals and molybdenum deep processing products, such as market inquiry yet to see improvement, we expect short-term market trend remained stable molybdenum.According to research, at present more than 60 degrees wool wolframite ore price 1.78 yuan / kWh nearby and procurement needs less; business confidence, traders are afraid to purchase tungsten, fearing heart harder shots. And due to lack of demand and financial pressure, cash transactions of small quantities of tungsten, the price even lower than the gross price is also mine.
According to the analysis is expected this week, Minmetals if not taken any purchasing and storage plan, or tungsten concentrate prices this week due to lack of demand for support and fell again.
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