December 13, 2017

Particle size classification of WC powder and its industrial application

Tungsten carbide powder (WC) is the main raw material, the production of cemented carbide with tungsten metal powder and carbon black as raw material, the mixture in a certain proportion, the mixture into graphite boat, placed on a carbon tube furnace or high sense of intermediate frequency electric furnace, carbonized under a certain temperature, then through the ball mill, screening for a quick tungsten carbide powder.
property
The tungsten carbide powder is a dark grey powder which can dissolve in many kinds of carbides, especially in the carbonized titanium, which forms the TiC-WC solid melt.
Application
Tungsten carbide powder is used to produce hard alloy.
Packaging for WC powder
Generally use inside plastic bag seal, outer iron bucket package, net weight of no more than 50kg.
Inspection standard
According to gb4324-84, the analysis method of the chemical composition of the chemical composition of the chemical composition of tungsten carbide powder was carried out in accordance with gb4324-84. The average particle size was carried out in gb3249-82, and the sampling method was carried out in accordance with gb5314-85, and the main content (WC) was calculated by differential subtractive method.
The first tungsten powder was produced by chemical purity. Japan has formulated the industrial standard for tungsten powder and WC powder (jish2116-1979). Britain, France and the former Soviet union have unified national standards for tungsten powder. The technical conditions for hydrogen reduction tungsten powder was formulated in 1982 by the tungsten powder of Chinese industrial production (gb3458-82). The standard defines the performance and classification of the tungsten powder. And the inspection methods, acceptance rules, packaging, transportation and storage have been clearly defined. For special use and for the special purpose of the tungsten powder, the production plant can be produced according to the requirements of the user.
Industrial Application
Tungsten powder is the main raw material for processing powder metallurgy tungsten products and tungsten alloys. Pure tungsten powder can be made into silk, rod, tube, plate and other processing materials and certain shape products. Tungsten powder mixed with other metal powders can be made into various tungsten alloys, such as tungsten molybdenum alloys, tungsten rhenium alloys, tungsten-copper alloys and high-density tungsten alloys. Another important application of tungsten powder is to make tungsten carbide powder, which can be used to prepare cemented carbide tools such as tool, milling cutter, bit and mould.
Tungsten products
Particle size classification of WC powder
Tungsten powder quality directly determines the quality of tungsten carbide (WC) and alloy properties, tungsten powder grading can effectively change the performance of the powder, solve the problem of coarse clip to fine powder, reduce the minimum size and maximum diameter and average particle size difference degree, to produce more crude and more uniform tungsten carbide powder; Due to the characteristics of tungsten, it is not easy to be broken. In the pre-grading, the particles should be broken in a proper way, and the granules of the powder can be separated, and the powder can be separated more effectively and the uniformity can be improved. According to the characteristics of the original powder, it is necessary to find the best operation process.

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