2014年7月6日星期日

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 .

2014年7月4日星期五

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.

2014年7月2日星期三

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.

2014年6月27日星期五

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).