tungsten bar the inevitable rise in the price of tungsten manifested

Tungsten Industry Association for nearly two years to conduct a careful tungsten market trend analysis, that there are three major characteristics: First Scheelite 100,000 yuan / ton price has been on the market psychologically and downstream enterprises to accept and in fact recognized ; Second, market pricing has the right to speak turned upstream and downstream enterprises are gradually transition from foreign to domestic ; Third, the supply and demand sandblasted tungsten targetget rid of impulsive feeling , psychologically more mature , and in the price has been stable . With this foundation , the steady growth in demand , under the premise of binding supply tungsten bar‍ environment at the same time to enter the market once the demand , stabilize the price of tungsten is in the affirmative , the inevitable rise in the price of tungsten manifested . Kong Zhaoqing pointed out that the stability of demand, supply constraints of mature psychological, as well as downstream into harmony on four major factors supporting the market and prices. China's influence on the global tungsten market is bound to increasingly enhanced. The reason why in the last two years the city of tungsten high, some experts believe is the result of many factors , both countries to strengthen macro- economic role to maintain stable development , but also to tungsten cubic‍ strengthen its own adjustments , price reasonable return factors , while there are other factors at home and abroad .

tungsten bar the inevitable rise in the price of tungsten manifested

Tungsten Industry Association for nearly two years to conduct a careful tungsten market trend analysis, that there are three major characteristics: First Scheelite 100,000 yuan / ton price has been on the market psychologically and downstream enterprises to accept and in fact recognized ; Second, market pricing has the right to speak turned upstream and downstream enterprises are gradually transition from foreign to domestic ; Third, the supply and demand sandblasted tungsten targetget rid of impulsive feeling , psychologically more mature , and in the price has been stable . With this foundation , the steady growth in demand , under the premise of binding supply tungsten bar‍ environment at the same time to enter the market once the demand , stabilize the price of tungsten is in the affirmative , the inevitable rise in the price of tungsten manifested . Kong Zhaoqing pointed out that the stability of demand, supply constraints of mature psychological, as well as downstream into harmony on four major factors supporting the market and prices. China's influence on the global tungsten market is bound to increasingly enhanced. The reason why in the last two years the city of tungsten high, some experts believe is the result of many factors , both countries to strengthen macro- economic role to maintain stable development , but also to tungsten cubic‍ strengthen its own adjustments , price reasonable return factors , while there are other factors at home and abroad .

tungsten bar o add a small amount of tungsten steel can greatly improve the hardness

Pure tungsten is steel-gray to tin-white hard metal, very pure tungsten Available saw sawing (pure tungsten is very brittle and difficult to process). Tungsten has forging, tensile and impact three kinds of processing methods. In all the tungsten bar‍ highest melting point of tungsten metal for 3415 ℃, the lowest vapor pressure, tensile strength up (1650 ℃ when). Corrosion performance is very good, most of the inorganic acid inflicting only minor erosion. In air, pure tungsten surface will form a protective oxide at high tungsten boat will be completely oxidized. To add a small amount of tungsten steel can greatly improve the hardness of steel. High purity tungsten is purity of 99.999% and 99.9999%, denoted 5N and 6N pure tungsten. Pure tungsten various impurity elements should be tungsten cubic‍ (0.1 ~ 1000) × 10-12 between, for some impurity element content, such as radioactive elements, alkali metals, heavy metals and gaseous elements, etc. Also there were special requirements . High-purity tungsten and tungsten silicide for ultra large scale integrated circuit as the resistive layer, a diffusion barrier layer and the metal oxide semiconductor-type transistor connected as a gate material, and materials.

tungsten bar o add a small amount of tungsten steel can greatly improve the hardness

Pure tungsten is steel-gray to tin-white hard metal, very pure tungsten Available saw sawing (pure tungsten is very brittle and difficult to process). Tungsten has forging, tensile and impact three kinds of processing methods. In all the tungsten bar‍ highest melting point of tungsten metal for 3415 ℃, the lowest vapor pressure, tensile strength up (1650 ℃ when). Corrosion performance is very good, most of the inorganic acid inflicting only minor erosion. In air, pure tungsten surface will form a protective oxide at high tungsten boat will be completely oxidized. To add a small amount of tungsten steel can greatly improve the hardness of steel. High purity tungsten is purity of 99.999% and 99.9999%, denoted 5N and 6N pure tungsten. Pure tungsten various impurity elements should be tungsten cubic‍ (0.1 ~ 1000) × 10-12 between, for some impurity element content, such as radioactive elements, alkali metals, heavy metals and gaseous elements, etc. Also there were special requirements . High-purity tungsten and tungsten silicide for ultra large scale integrated circuit as the resistive layer, a diffusion barrier layer and the metal oxide semiconductor-type transistor connected as a gate material, and materials.

tungsten bar Tungsten-based alloy of tungsten is added to the other elements of the alloy

Tungsten-based alloy of tungsten is added to the other tungsten bar elements of the alloy. In metals, the highest melting point of tungsten, high temperature strength and creep resistance and thermal conductivity, electrical conductivity and electron emission properties are better than the material, in addition to a large number of alloys for the manufacture of tungsten bolts carbide and tungsten and tungsten alloys are widely used electronics, electric light industry, but also aerospace, casting, weaponry and other sectors for the production of rocket nozzles, die casting mold, penetrator, contacts, tungsten cubic heating elements and insulation screens.

tungsten bar Tungsten-based alloy of tungsten is added to the other elements of the alloy

Tungsten-based alloy of tungsten is added to the other tungsten bar elements of the alloy. In metals, the highest melting point of tungsten, high temperature strength and creep resistance and thermal conductivity, electrical conductivity and electron emission properties are better than the material, in addition to a large number of alloys for the manufacture of tungsten bolts carbide and tungsten and tungsten alloys are widely used electronics, electric light industry, but also aerospace, casting, weaponry and other sectors for the production of rocket nozzles, die casting mold, penetrator, contacts, tungsten cubic heating elements and insulation screens.

tungsten bar tungsten has slightly radioactive

characteristics of pure tungsten

Source Chinese "W" and the symbol "W" tungsten cubic‍ are from the German Wolfram. Three recently discovered the most stable isotopes of tungsten has slightly radioactive. [3]

Pure tungsten is a steel-gray to tin-white hard metal, very pure tungsten can be see-saw sawing (pure tungsten is very brittle and difficult to process). Tungsten processing methods have wrought

Manufacturing, tensile and impact. In the highest melting point of all metals tungsten is 3422 ° C, the lowest vapor pressure at the highest tensile strength (1650 ° C time). Its antiseptic

Performance is very good, most of the erosion of its small inorganic acids. Forming a protective oxide layer on its surface in the air, but at high temperatures it will be finished

Full oxidation. Steel was added to a small amount tungsten carbide inserts‍ of tungsten can greatly increase the hardness of steel.

Tungsten, tungsten ore is a chemical element, its chemical symbol is W, its atomic number is 74, is an off-white transition metal. It is a very hard, Steel-gray to white transition metal. Minerals containing tungsten are wolframite and scheelite and so on. Tungsten is very strong physical characteristics, in particular its melting point is very high,

All non-alloy metals in the highest. Pure tungsten is mainly used in electrical and electronic equipment, many of its compounds and alloys are also used in many other applications (the most commonly

See light bulb filament, and the X-ray molybdenum rod‍ tube at a high temperature tungsten alloy is also used).

tungsten bar White molybdenum net exposure

How to prevent white molybdenum oxide network and how to package white molybdenum network

White molybdenum net exposure at room temperature, air tungsten cubic‍ humidity environment will slow oxidation. Molybdenum heating network in the air, the color from white to dark gray start; temperature rise 20 ℃, molybdenum internal network began to be slow oxidation, oxidation speed mechanical strength decreased slightly broken receive external force will lead to scrap, so molybdenum mesh bag Installation and use of the environment is particularly important. White molybdenum mesh packaging vacuum packaging film moisture in the air before the user isolation, to prevent oxidation. White molybdenum tungsten carbide inserts‍ extremely high due to the net

Temperature air oxidation, usually only used in high temperature environment or under vacuum at room temperature state components used in the electronics industry to make the.‍

tungsten bar White molybdenum net exposure

How to prevent white molybdenum oxide network and how to package white molybdenum network

White molybdenum net exposure at room temperature, air tungsten cubic‍ humidity environment will slow oxidation. Molybdenum heating network in the air, the color from white to dark gray start; temperature rise 20 ℃, molybdenum internal network began to be slow oxidation, oxidation speed mechanical strength decreased slightly broken receive external force will lead to scrap, so molybdenum mesh bag Installation and use of the environment is particularly important. White molybdenum mesh packaging vacuum packaging film moisture in the air before the user isolation, to prevent oxidation. White molybdenum tungsten carbide inserts‍ extremely high due to the net

Temperature air oxidation, usually only used in high temperature environment or under vacuum at room temperature state components used in the electronics industry to make the.‍

tungsten bar molybdenum mesh welding brittleness

Molybdenum and molybdenum mesh network performance classification

Molybdenum network has a high temperature tungsten bar‍ resistance, applied in a vacuum furnace heat treatment industry, the maximum temperature can reach 2200 ℃. Net producer of molybdenum lanthanum alloy wire is often used for the production of molybdenum

Raw materials, lanthanum alloy strength can be maintained. Molybdenum metal wire woven mesh has good thermal conductivity and a low coefficient of expansion, at a high temperature (1100 ~ 1650℃) high strength, as compared to tungsten mesh easier processing. tungsten carbide inserts‍ The tube can be used as the gate and anode, the support materials, light, and for the production and casting Extrusion dies, spacecraft parts.

????Due to low temperature brittleness and molybdenum mesh welding brittleness and high temperature oxidation, so that the surface coated graphite milk to protect the molybdenum substrate, slow oxidation rate increase

Frequency of use. Mass production of molybdenum tungsten cubic‍ molybdenum mesh network series series, molybdenum foil punching network series. The surface molybdenum mesh weave which can be divided into light and dark molybdenum Network

Color molybdenum net. The new molybdenum mesh products through mechanical leveler can improve their strength and flatness.

‍

tungsten bar Tungsten production process

Large number of experimental studies suggest that the anti-sagging performance and a very small amount of silicon, aluminum, potassium oxide by hydrogen reduction of tungsten tungsten ingot metal powder, tungsten oxide formed prior to incorporation of "doping effect" closely related. For the needs of industrial production, it is the role of doping-sag performance and extensive research, industrial production in general, silicon, aluminum, potassium dopant by a tungsten electrode to the tungsten oxide by hydrogen reduction to tungsten powder, mixing, pressing, burn, melt processes produce a vertical tungsten. Tungsten after swaging or rolling, blooming, annealing, drawing and other processes produce a variety of tungsten wire. In the course of a sintered tungsten, the dopant and other impurities volatilized as the tungsten rods  temperature rises. Volatile silicon and aluminum is very strong at 2 000 ~ 2 200 ℃ when more than 2 200 ℃, the aluminum basically evaporate.

tungsten bar Try to use advanced mold processing technology to produce high-quality carbide drawing dies

At present, most of the tube with a tungsten tungsten coil pick from. tungsten filaments In feeding the process, a lot of cracking scrap tungsten plate, yielding low, rolled into a tube shape is not round, the difference between the radial strength of the tube. Moreover, pipe wall thickness tolerance volume tungsten plate although strictly controlled, but the influence of the cigarette seam, the uniformity of the thickness of the tube is undesirable. To this end, we use a powder metallurgy method of trial Spinning seamless tungsten tube. Abstract trial program blanks consumption. Material selection 601 plant purity tungsten powder, its tungsten tube. Set the powder uniformly charged with intermediate tungsten carbide rod plastic sleeve, sealed with a stopper and rounded ends, and press-molded at a maximum pressure of 2 tons / cm, the concentration of the HIP container, and finally on the hydrogen sensor 200KW sintering furnace sintering, the sintering process. Gives the tungsten filament  physical properties of tungsten powder particle size greater difference between the two groups composed of cumulative curves and median diameter, and these two groups of tungsten powder at a temperature of 2350 ~ 2400 ℃ sintered at different times by the density and grain size.

tungsten bar most of the tube with a tungsten coil connection is made using tungsten

At present, China's nonferrous metals trade, the largest trade smelting products , its quality directly affects the quality of subsequent processing of the product. As of 2005 , remelting ingots , copper cathode , lead, zinc , zinc , tin ingots, magnesium, gold bullion , silver bullion , such as product standards average water reached the international advanced level , quality and international level is very kind . Among them, 48 brands of eight kinds of products on the London Metal Exchange is the world's largest non-ferrous metals market , to enter the international market marks the recognition of product quality . China's major copper, aluminum , lead, zinc , tin and other production companies are registered . Because from the production technology, equipment level to greatly improve enterprise management , the quality of non-ferrous metal processing material has significantly improved. National standard processing materials , the industry standard system integrity, the standard level of developed countries are equivalent, but the overall level of physical quality is uneven , with some typical wood processing products quality has reached the international advanced level. For example ,tungsten bar and refrigeration with brass, before basically rely on imports in recent years, not only meet the domestic demand for the rapid development of air conditioning and refrigeration industry , strongly supports the development of household appliances, power generation and other industries , but also exported to Japan and Europe and other countries for China to become the world's largest air conditioner , refrigerator production , tungsten cubic  make a contribution. Aluminum profiles for the construction industry in recent years has been the rapid development of its products quality has reached the international level , not only meet the domestic demand for the rapid development of the construction industry , but also a large number of export . At present, China has become the world's first architectural aluminum production, exports , consumer. Thanks to the development of aluminum profiles market competition mechanism , after nearly a decade of market competition and elimination, product variety and quality has thus reached a new level. In rare metals and powder metallurgy products, our tantalum powder and tantalum wire processing other materials tantalum and niobium , lithium products such as industrial lithium carbonate, tungsten filaments hydroxide monohydrate and tantalum chloride anhydrous crystalline tantalum, lithium metal , with its products quality able to meet and exceed the technical requirements of the standard , endorsed, export volume rising domestic and foreign users .

Tungsten Cubic Uses and properties of molybdenum-copper

Molybdenum Copper military power suitable for the manufacture of microelectronic devices as a heat sink and tungsten cubic the sealing material of aluminum oxide ceramic sealing and structural materials molybdenum-copper alloy rod, but also for the manufacture of microelectronic devices civil power
Pieces of high thermal conductivity given inflation sealing heat sink with molybdenum copper alloy rod .
Molybdenum-copper alloy of copper and molybdenum comprehensive advantages of high strength, high specific gravity , high temperature resistance, arc ablation , electric conductivity properties, tungsten filaments good processing performance. Using high -quality oxygen-free copper molybdenum powder and powder , apply isostatic
Pressure molding ( high temperature sintering - copper infiltration ) , to ensure product purity and accuracy ratio, organized crime , and excellent performance. Breaking arc resistance, electrical conductivity, thermal conductivity, thermal expansion smaller.

tungsten bar Another important use of tungsten

Another important use of tungsten, which is in rockets, missiles, spacecraft, and return-type nuclear reactors and other important applications on the cutting-edge science. This is because the tungsten having excellent physical, mechanical, corrosion resistance and nuclear performance reasons. Such as tungsten alloy at 1900 ℃ high tungsten carbide ball tungsten carbide plate is still large, and in such high temperatures, either steel or heat-resistant super alloys are melted into a liquid. Mainly used to manufacture various types of rocket engines without cooling throat; made ​​with infiltration silver tungsten nozzle can withstand temperatures above 3100 ℃ for various types of missiles and aircraft; tungsten fiber composite materials produced by the rocket nozzle, the ability of 3500 ℃ or higher; in the chemical tungsten weights industry, equipment and components for corrosion do; do lubricants, pigments, and various reactions.

Tungsten Cubic Molybdenum deficiency disorders on the

Molybdenum deficiency disorders molybdenum disk on the human body: the body's energy metabolism can place obstacles, resulting in myocardial hypoxia and focal necrosis. Prone to kidney stones and urinary tract stones. Lead to iron deficiency anemia. Promote dental caries. And the incidence of esophageal cancer are closely related. Overdose: gout-like syndrome, joint pain and deformity, kidney damage. The body's requirement for molybdenum growth retardation, weight loss, hair loss, atherosclerosis, molybdenum foil connective tissue degeneration and skin diseases.

Molybdenum does to the human body

1. Maintain the myocardial energy metabolism: Kekai molybdenum chart is a composition of several kinds of enzyme in myocardial, play an important role in myocardial energy supplies. Keshan disease is a kind of cardiomyopathy, has proved that selenium deficiency is one of the causes, but more direct reason is the lack of molybdenum.

2. Molybdenum and immune: on the immune function of patients with keshan testing found that specific cellular immune function is reduced, molybdenum crucible deficiency crowd of supplements molybdenum immune function recovery. But too molybdenum also have damage to the immune function, and this has been confirmed in the animal experiments.

3. Adjust the thyroid gland secretion: research has shown that in keshan disease ward in the crowd and molybdenum and selenium, can adjust the thyroid function, thyroid function returned to normal.

Molybdenum deficiency may be one of the cause of esophageal cancer.

The Chinese nutrition society made the daily diet of molybdenum disk "safety and appropriate intake" reference indexes, infants less than 6 months each 0.03 ~ 0.06 mg per day, 1 year old of less than 0.04 ~ 0.08 mg per day, 1 over the age of 0.05 ~ 0.10 mg, 0.06 ~ 0.15 mg, aged 4 7 years old of above 0.10 ~ 0.30 mg per day, 11 years of age or older to adult is 0.15 ~ 0.50 mg per day per person. This index and the scientific research committee of food and nutrition council estimates of "safe and appropriate

Tungsten bar red pigment and pigment Fast precipitan Metal catalyst

used in the manufacture of alkaloids , ink , fertilizers , Kekai tungsten bar red pigment and pigment Fast precipitan Metal catalyst , molybdenum salts , can also be used to make flame tungsten boat and suppression of pollution- water system Pr

eparation , also used as galvanizing , polishing agents and chemical reagents.

The use of tungsten bar pellets

Tungsten alloy ball density, small size, small size, high specific gravity field components can be used as needed. Wolfram Alloy can be used as a golf ball counterweight , fishing sinkers , military counterweight , missile warheads, wear

A bomb warheads, Kekai Tungsten & Molybdenum technology tungsten alloy cartridges , prefabricated fragments ; also as a counterweight oil drilling platform And a number of other high- confidential areas, such as balancing the phone vibrator , pendulum clock and automatic watches to see, Shockproof holder, flywheel counterweight . These areas need to use tungsten carbide ball pellets .

Carbide - Tungsten Steel & Tungsten bar

Tungsten steel is carbide, also known as tungsten alloy. Hardness can reach 89 ~ 95HRA, reason, tungsten steel products (commonly tungsten carbide rods steel watches), with easy to be worn, not afraid of hard annealing, but brittle characteristics. 

The main components of carbide tungsten alloy carbide and cobalt, which accounted for 99% of all ingredients and 1% other metals, it is also known as copper tungsten. 

Commonly used in high-precision machining, precision cutting tool materials, lathes, impact drill bit, glass cutter head, above the tile cutter, hard afraid of annealing, but brittle. Are rare. 

Tungsten steel (alloy) 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 a temperature of 500 ℃ also remained unchanged, at 1000 ℃ still very high hardness. Carbide is widely used as a material, such as turning, milling, planer, drill, boring knife, for cutting cast iron, nonferrous metals, plastics, chemical fiber, graphite, glass, stone and ordinary steel can also be used to cut resistance material difficult to process hot steel, stainless steel, high manganese steel, tool steel. New carbide cutting speed is equal to the number of times the carbon steel. 

Tungsten steel (alloy) can be used to make drilling tools, mining tools, drilling tools, measuring tools, wear parts, metal grinding, cylinder liners, precision bearings, nozzles.

Tungsten bar saw blade

Cold rolled metal blade also referred to as Kekai tungsten wire for cutting steel, non- ferrous materials circular saw blades in normal condition in general. Welding using silver soldered to the cemented carbide cutting tip of the tooth of the outer peripheral portion of the steel sheet of high quality carbide , the tip is ground to a design suitable for cutting material . Divided according to use -and TA regrind type ( one-time ) two. Past are using is called Feng hacksaw ( HSS circular saw blades ) , with a band saw tungsten tube sawing machine used ( all with high-speed steel tool steel as raw material ) , but there is a difference cutting efficiency , ( not fast cutting ) , tool short life problems. To solve these problems , the development of a portion of the blade of the circular saw blade welding head . Now, this saw blade is becoming mainstream metal material cutting . It is particularly worth mentioning is that only a small amount of coolant can be processed , and easy to manage disposable blade cold saws TA tendency to increase very rapidly in China and tungsten weights . Due to heavy industry as the core of the steel , auto parts processing industry and metal processing industry , we need to cut solid steel bars, rods , stainless steel rods and other raw materials , metal circular saw blades currently in use , carbide cutting blade only wood, plexiglass / acrylic, copper , aluminum and other soft materials , in the face of this solid material cutting becomes "powerless ."

Tungsten Steel & Applications

Tungsten steel is carbide, also known as tungsten weights alloy. Hardness can reach 89 ~ 95HRA, reason, tungsten steel products (commonly tungsten steel watches), with easy to be worn, not afraid of hard annealing, but brittle characteristics.
The main components of carbide tungsten filaments carbide and cobalt, which accounted for 99% of all ingredients and 1% other metals, it is also known as tungsten ingot steel.
Commonly used in high-precision machining, precision cutting tool materials, lathes, impact drill bit, glass cutter head, above the tile cutter, hard afraid of annealing, but brittle. Are rare.
Tungsten steel (alloy) 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 a temperature of 500 ℃ also remained unchanged, at 1000 ℃ still very high hardness. Carbide is widely used as a material, such as turning, milling, planer, drill, boring knife, for cutting cast iron, nonferrous metals, plastics, chemical fiber, graphite, glass, stone and ordinary steel can also be used to cut resistance material difficult to process hot steel, stainless steel, high manganese steel, tool steel. New carbide cutting speed is equal to the number of times the carbon steel.
Tungsten steel (alloy) can be used to make drilling tools, mining tools, drilling tools, measuring tools, wear parts, metal grinding, cylinder liners, precision bearings, nozzles.

Insufficient global supply of tungsten bar growing trend

Tungsten is one of the world most hard materials texture, this metal to extreme heat - especially high-calorie - has a remarkable capacity, in addition to the vacuum tube filament incandescent filament outside (the latter is indeed still in use, but only 3% of all uses of tungsten), also widely used carbide tools (half of Kekai tungsten alloy is used for this purpose), oil and gas exploration in the "hard steel" drill, rocket engine nozzle and cathode-ray tubes, irreplaceable importance.
Tungsten is being increasingly applied to new technologies. High hardness, high stability and ability to withstand extreme temperatures they have, making it an ideal material for the electrodes and components used in touch screen. With smart phones and tablet devices for explosive applications touchscreen technology, the world demand for tungsten ball in the original annual growth rate of 6% on the basis of further surge.
China's tungsten production accounts for over 80% of world production, has slashed exports of tungsten, has now become a net importer of this precious metal. The control of exports of tungsten balls did not show any signs of loosening, which was used for the country's manufacturing sector. Therefore, the rest of the world will find another new sources of supply.
Russia has some reserves, but will remain 70% for domestic use. People also recovered from the use of existing equipment and spare parts in tungsten, but even this source has now also applied to the limit, for the time being there is no sufficient new resources appear.
Right now, the removal of China and Russia, only five tungsten mine as a major supplier of the global market. A recent British Geological Survey report released a list of the existence of the economic value of the metal, "endangered", which topped the list of tungsten.

tungsten bar electrode

<br />
<span style="background-color: white;"><span style="font-family: lucida grande, tahoma, verdana, arial, sans-serif;"><span style="font-size: 14px; line-height: 21px;">The biggest use of tungsten, also not manufacturing filament, but manufacturing tungsten steel. Each year, 90% of the world's&nbsp;</span><a href="http://www.china-tungsten-molybdenum.com/key-tungsten-filaments-238/" style="font-size: 14px; line-height: 21px;">Kekai tungsten filaments</a><span style="font-size: 14px; line-height: 21px;">&nbsp;is used in the manufacture of&nbsp;</span><a href="http://www.china-tungsten-molybdenum.com/key-tungsten-ingot-278/" style="font-size: 14px; line-height: 21px;">tungsten ingot</a><span style="font-size: 14px; line-height: 21px;">&nbsp;steel. In ancient China, often have so-called "very sharp" nod, said "water margin" inside the hair on the "green beast" yang2 zhi4 one nod to the blade of a blow, hair was cut in half. These legends are exaggerated, however, there are some knife is very sharp. According to the modern analysis with chemical method. Originally, containing tungsten in the steel knife! Now, people use the&nbsp;<a href="http://www.china-tungsten-molybdenum.com/key-tungsten-electrode-274/">tungsten electrode&nbsp;</a>and iron together, refined into a tungsten steel. Tungsten steel containing tungsten by 9-17%.</span></span></span><span style="background-color: white; font-family: 'lucida grande', tahoma, verdana, arial, sans-serif; font-size: 14px; line-height: 21px;">&nbsp;</span>

Tungsten bar alloy rod

Tungsten alloy rod is composed of metal powder in the order of refining of high temperature, and use special high temperature powder refined but become, such as tungsten alloy rods of thermal expansion coefficient is very low, such cases of thermal conductivity of metalKekai tungsten balls rod is good material, in the case of high temperature, tungsten alloy rods as a high melting point, low thermal expansion coefficient of the material, the addition of tungsten alloy five elements to improve workability, toughness and welding. Material performance is built on a manufacturing tungsten bar rods eliminate material handling problems related with other tools. Tungsten alloys are of great value in military and industrial value, is a special kind of strategic materials, are made of metal tungsten rod application and military field, can to a large extent, improve the performance of aircraft, vehicle, but also can play the role of it is that he has a high accuracy, can be its speed is very fast. Tungsten rods with their special properties, such as low thermal expansion and good thermal conductivity, enough resistance resistance, high modulus of elasticity. So tungsten rods are widely used in various fields. Such as support of wires, import, printer needle, all kinds of electrodes and Shi Yinglu, filament, high-speed tools, automobile automatic products, sputtering target materials.

How to machining tungsten bar ingots and tungsten rods

Pure tungsten hardness and strength are high,Tungsten billets in cutting process, because of the coarse grains, easy to produceImpellers and make the rough surface processing.Cutting tungsten ingots and Kekai tungsten & Molybdenum tungsten carbide rods can be used to make carbide cutting tool materials,The commonly usedCemented carbide gradesYG6,YG8,YS2(YG10H),726And so on.With cutting ingot or tungsten bars, tungsten carbide can be used45O Lord Angle, wild car rake Angle and back Angle should be small,car and semi finished when the rake Angle, Angle after more appropriately. Pure tungsten wire extremely fragile, easy to collapse when cutting edge or peeling off,Cutting tool to cut out when, should reduce feeding, to prevent the tool breakage. 

Tungsten ingots, pure tungsten bar

Tungsten ingots, pure tungsten, tungsten powder, tungsten slag, carbonized tungsten, tungsten, scrap sponge Kekai tungsten & Molybdenum tungsten carbide rods, tungsten bars, tungsten and tungsten tube, tungsten, tungsten carbide, tungsten rods soft black gold, electrolytic tungsten and tungsten alloy, etc.

Properties: symbol: W, silvery white, shiny metal, density: 19.35 grams per cubic centimeter, melting point: 3410-20 ℃, boiling point: 5927 ℃, mohs hardness: 7.5, the chemistry of the tungsten weights is stable, with air and water at room temperature without response, not soluble in hydrochloric acid, sulfuric acid, nitric acid and alkali solution. Dissolved in aqua regia, and a mixture of nitric acid and hydrofluoric acid. Under high temperature to chlorine, bromine, iodine, carbon, nitrogen, sulfur and other chemical combination, but not with hydrogen.

USES: mainly made of tungsten powder and tungsten carbide powder and tungsten compounds, widely used in chemical industry, machinery, electronics and other fields, make filament and high speed cutting steel alloy, also used in optical instruments. 

Kekai Tungsten bar & Molybdenum Technology

Tungsten is part of non-ferrous metals , is also an important strategic metal , Kekai Tungsten & Molybdenum Technology copper tungsten ore in ancient times was called " heavy stone ." 1781 by the Swedish chemist Carl . William . She Yeer discovered scheelite , and extract new elements acid - acid, in 1783 by the Spanish Air Asia Depp found wolframite also extract the acid, the same year, with a carbon reduction of tungsten trioxide first got tungsten powder, and named the element. Tungsten content in the crust is 0.001 %. copper molybdenum minerals have been found in 20 species . Tungsten deposit is generally accompanied by granitic magma activity and the formation . After molybdenium smelting after the silver-white lustrous metal , high melting point, great hardness.

????Currently mined tungsten mine in the world , about 50% for high-quality steel smelting , about 35% for the production of rigid steel , approximately 10% for the system tungsten wire , about 5% of the other for other purposes. Tungsten can be manufactured firearms , rocket nozzles , metal cutting blades, drill bits , hard mold , drawing dies , etc., the use of tungsten is very extensive, involving mining, metallurgy, machinery , construction, transportation , electronics, chemical industry, light industry , textile , military, aerospace , technology, various industrial fields. The most common is our home and some bulbs with tungsten filaments .

You do not know helpful

Tungsten bar is a power vacuum lighting materials

TungstenKekai tungsten & Molybdenum Technogy tungsten bar filament , tungsten bands and various forging components for tube production, radio electronics and X -ray technology . Incandescent tungsten filament is helical filaments and the best materials. High temperature (2200 - 2500 ℃) ensure a high luminous efficiency , and a small rate of evaporation of the wire to ensure a long life . tungsten carbide ball for manufacturing an electronic oscillator tube straight hot cathode and a gate , and a high-voltage rectifier and the cathode side in various electronic instruments hot cathode heater. For contacts made ??with tungsten carbide rod cathodes and cathode and atomic and hydrogen torch electrode radio equipment X-ray tube and the gas discharge tube . Tungsten and tungsten rod as a high temperature furnace (3000 ℃) heater . Tungsten heater in a hydrogen gas , an inert gas or in vacuum .

The role of tungsten bar

Tungsten is part of non-ferrous metals , is also an important strategic metal , tungsten ore in ancient times was called " heavy stone ." 1781 by the Swedish chemist Carl . William . She Yeer discovered scheelite , and extract new elements acid - acid, in 1783 by the Spanish Air Asia Depp found wolframite also extract the acid, the same year, with a carbon reduction of Kekai tungsten & Molybdenum Technogytungsten trioxide first got tungsten powder, and named the element. tungsten alloy content in the crust is 0.001 %. Tungsten minerals have been found in 20 species . Tungsten deposit is generally accompanied by granitic magma activity and the formation . After tungsten smelting after the silver-white lustrous metal , high melting point, great hardness.Currently mined tungsten ball mine in the world , about 50% for high-quality steel smelting , about 35% for the production of rigid steel , approximately 10% for the system tungsten wire , about 5% of the other for other purposes. Tungsten can be manufactured firearms , rocket nozzles , metal cutting blades, drill bits , hard mold , drawing dies , etc., the use of tungsten is very extensive, involving mining, metallurgy, machinery , construction, transportation , electronics, chemical industry, light industry , textile , military, aerospace , technology, various industrial fields. The most common is our home and some bulbs with tungsten filaments .
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Tungsten bar

Wolframite, scheelite , tungsten, iron ore and other minerals containing tungsten. Important tungsten&moly tungsten mine in Bolivia , California and Colorado, China , Portugal, Russia and South Korea. China produces 75% of the world's tungsten . Obtain pure tungsten carbide ball metal by reduction of oxides of carbon .

Tungsten estimated worldwide total storage of 700 tons, of which about 30% is wolframite, scheelite 70% . However, most of these deposits can not be mined economical manner . According to the current consumption of these deposits is only enough to use about 140 years . Another way to obtain tungsten carbide rod is recycled. Recovery of tungsten ore than tungsten content, in fact very profitable .

Molybdenum: weak demand hardly Tungsten Cubic about rising prices

2012, 40-45% of molybdenum price of 1632 yuan / ton level, far below the 2004 average level since 2730 yuan / ton level, but also lower than the cost of the original ore

The production cost of 1800 yuan / ton degrees. In this regard, the assistant general manager Antaike, tungsten&moly tungsten wire, molybdenum, vanadium project manager Xu Aihua said that although the molybdenum price decline for several years to make the molybdenum industry group

The completion of the initiative to take the initiative to inventory and production process, but can hardly be optimistic about demand for molybdenum, molybdenum prices climbed weakness.
Xu Aihua believes that the current global economic situation, the trend is still uncertain, weak economic growth, which directly affects the development of the steel industry. As with steel line

Close relationship molybdenum industry, the recent price trend will go through a period of adjustment.
In 2012, global production of 229,000 tons of tungsten bar, again following the 2009 decline, dropping 8.5%. Among them, the United States and Chile led the declines, reaching 17%

And 26%, while China has increased slightly.
Currently, molybdenum production in China, the U.S., Chile's share of global proportion reached 37%, 26% and 15%. In recent years, the global amount of molybdenum mineral growth came mainly from the

Country.
According to Xu Aihua expected, from 2013 to 2014, the global copper molybdenum production were estimated at 250,000 tons, 270,000 tons. In output growth, she particularly valued the China factor

. "Because Osan copper-molybdenum mine belongs to China National Gold Group Corporation in January of this year the successful implementation of copper-molybdenum alloys separation, I expect mine production this year will reach 3,000 tons,

Next year production is expected to reach 6,000 tons. "
Molybdenum reserves are mainly distributed in China, the U.S., Chile and other countries, the three countries accounted for 81 percent of global reserves. Chinese molybdenium reserves of the world, and more for mine

Primary ore, high grade, low impurity. "At present, the domestic private mining indiscriminate digging of small mines is serious. With the implementation of the industry access policy, I believe the industry leader for molybdenum prices

Pricing power will increase. "Xu Aihua said.
In the long run, Xu Aihua molybdenum prices remain optimistic, she said: "From the end-consumer point of view, molybdenum is mainly used for energy, infrastructure, shipping, aerospace and military fields.

Significant gains in these sectors in the world's third industrial revolution and China's new urbanization pull, will drive consumption of molybdenum in the next 10 to 20 years to return to high growth

Track. "

The Tungsten Cubic copper and molybdenum

    Copper ore resource utilization, the increasingly widespread attention abroad call this no waste treatment or waste-beneficiation processes. The well-known American Clay

Max molybdenum processing plant in addition to the recovery of molybdenum in molybdenum concentrate grade of 54%, but also with molybdenum rougher tailings containing 50% S elected pyrite concentrate containing 65% WO3 of tungsten alloy concentrate containing 35%

Sn tin concentrate and monazite were five kinds of products; U.S. Mishin tungsten ball plant flotation tailings from the zinc rougher and was selected three times to obtain a zinc concentrate; Soviet Alberta

Marek plant installed in the hydraulic trap with some relief at the mill and processing with selection of a mix between the hydrocyclone concentrate with gold tank trap 20 to 70 micro-

M monomer gold particles, the total tungsten balls rate of 74 to 78 percent; Magne and Sangma Emanuel and other plant byproducts also note that additional payments, the former use of a special structure of the flow

Tank, gravity tailings transport in the gold recovery process back; Canada is recycled byproduct bismuth; Some plant has been mixed with a free selection of the tailings from the

Cobalt sulfide mineral, pyroxene mineral cobalt and arsenic, cobalt mineral pyrite concentrate, can inhibit the sodium iron sulfide flotation it out.