Tungsten Carbide Powder Production Flow Chart

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Ingredients computing: Because tungsten powder contains a small amount of oxygen, so in addition to consideration when calculating the carbon tungsten carbide powder required, it must also consider the carbon powder and oxygen required for the reaction.

Mixed materials: tungsten carbide powder quality depends on the degree of uniformity of tungsten powder mixed with carbon black, if uneven mix of materials, tungsten carbide powder and layered sinister phenomenon. Cemented carbide production process, in general, the tungsten powder and carbon black mixed in a ball mill (ball feed ratio of 1:1, ball diameter is 35 ~ 50mm), milling time is 2 ~ 4h, no material was observed with the naked eye stratification that is considered mixed.

Carbonized material: tungsten powder carbonization generally carried in graphite carbon tube furnace, carbonization process in accordance with of tungsten powder particle size and tungsten carbide powder size requirements to select, in general fine tungsten powder carbonization temperature of 1300 ~ 1350 ℃, coarse tungsten carbide powder temperature of 1600 ℃, carbonization time is 1 ~ 2h.

Milling: ball mill in a ball mill. Ball feed ratio of 1:1, ball diameter is 10 ~ 45mm, milling time according to process requirements, and generally is 2h. To prevent the powder from flying, sieved to be in the closed situation, the fine particles tungsten carbide (-200 mesh), tungsten carbide particles through a 250 mesh sieve, the coarse grain tungsten carbide through a 60 mesh sieve. The following table is a tungsten carbide ball milling, sifting process table:

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Tungsten Carbide Powder Picture

Tungsten Carbide Powder

Tungsten carbide powder (WC) is the main raw material for producing cemented carbide, chemical formula WC. The full name is Wolfram Carbide, tungsten carbide powder is black six square crystal, has metallic luster, hardness is similar to diamond, it is a good conductor of electricity and heat.
Tungsten oxide Picture

Tungsten oxide

Tungsten oxide is a tungstic anhydride and a tungstate product. Tungsten oxide is an oxide of tungsten. It is an important intermediate for the preparation of tungsten from tungsten ore. Tungsten oxide can be used to produce chemical products, such as paint and coatings, petroleum industry catalysts, etc.
Tungsten trioxide Picture

Tungsten Trioxide

Tungsten trioxide exists in the form of hydrate in nature, including mineral forms: wolfram (WO3? H2O), water tungsten oxide (WO3.2H2O) and water tungsten oxide. These minerals are rare and very rare secondary tungsten deposits.
Tungsten Concentrates Picture

Tungsten Concentrates

Tungsten is a parent stone element, which mainly exists in the pegmatite and hydrothermal deposits in the form of tungstate; there are about 15 known tungsten ores, of which there are mainly two wolframite and scheelite.