How about the tungsten alloy made of tungsten powder?
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Author : Lzh
Update time : 2022-12-14 18:28:07
What is tungsten powder? Tungsten powder is reduced with hydrogen in a four-tube muffle furnace or a multi-tube furnace using tungsten oxide as the raw material. The particle size ranges from 0.6-30 microns. It is mainly divided into coarse, medium and fine particles, silver grey powder. The impurity content is based on the national standard. It is prepared by hydrogen reduction of tungsten trioxide or ammonium para tungstate. The process of preparing tungsten powder by hydrogen reduction is generally divided into two stages: the first stage is the reduction of tungsten trioxide to tungsten dioxide at 500~700oC; In the second stage, tungsten dioxide is reduced to tungsten powder at 700~900oC. The reduction reaction is usually carried out in a tubular electric furnace or a rotary furnace. The performance of the reduced tungsten powder (such as purity, particle size, particle size composition, etc.) mainly depends on the reduction process. When tungsten powder is reduced in a tubular furnace, the main process parameters that affect the reduction rate are the reduction temperature, the amount of tungsten oxide in the burning boat, the burning boat moving speed, the flow rate of hydrogen and the moisture content in hydrogen. With the increase of the reduction temperature, the particle size of tungsten powder becomes coarse.
Properties and standards of tungsten powder In addition to certain requirements for the impurity content of tungsten powder, the oxygen content should be controlled within a certain range. The particle size of commonly used tungsten powder is generally 2~10 of the average Fisher size μ m. Tungsten powder is in the shape of polygonal particles. In addition, the specific surface area, bulk density and tap density of tungsten powder also vary within a certain range. The properties of tungsten powder directly impact the production of tungsten materials and the quality of tungsten powder metallurgy products, especially in purity and particle size. Tungsten powder is classified according to purity, particle size, and different uses The earliest production of tungsten powder is to divide hydrogen-reduced tungsten powder into three grades according to chemical purity; Japan has formulated the industrial standard of Tungsten Powder and Tungsten Carbide Powder (JISH2116-1979); Britain, France, the former Soviet Union and other countries all have unified national standards for tungsten powder. In 1982, the Technical Conditions for Hydrogen Reduction of Tungsten Powder (GB3458-82) was formulated for tungsten powder produced in China. This standard specifies the properties and classification grades of tungsten powder. It also specifies the inspection methods, acceptance rules, packaging, transportation and storage. The manufacturer can trial produce it according to user requirements for tungsten powder for special purposes and military use.
Use of tungsten powder Tungsten powder is the main raw material for processing powder metallurgy products and tungsten alloys. Pure tungsten powder can be made into wire, rod, tube, plate and other processing materials and products of a certain shape. Tungsten powder mixed with other metal powders can be made into various tungsten alloys, such as tungsten molybdenum alloy, tungsten rhenium alloy, tungsten copper alloy and high-density tungsten alloy. Another important application of tungsten powder is to make tungsten carbide powder, which can be used to make cemented carbide tools, such as turning tools, milling cutters, drills and moulds.
Price of tungsten powder Tungsten powder particle size and purity will affect the product's price, and the purchase volume can also affect the cost of tungsten powder. A large amount of large amount will be lower. The price of tungsten powder can be found on our company's official website.
Tungsten powder supplier Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) Luoyang City, Henan Province, China, is a reliable and high-quality global chemical material supplier and manufacturer. It has more than 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including tungsten powder, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective tungsten powder, you are welcome to contact us or inquire any time.
