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Uses of tungsten carbide

Uses of tungsten carbide

1. It is widely used as high-speed cutting tools, kiln structure materials, jet engine parts, cermet materials, resistance heating elements, etc.

2. Used to manufacture cutting tools, wear-resistant parts, melting crucibles for metals such as copper, cobalt, and bismuth, and wear-resistant semiconductor films.

3. Used as super-hard tool material and wear-resistant material. It can form a solid solution with many carbides. WC-TiC-Co carbide tools have been widely used. It can also be used as a modified additive of NbC-C and TaC-C ternary system carbides, which can reduce the sintering temperature and maintain excellent performance. It can be used as aerospace materials.

4. Use tungsten anhydride and graphite to synthesize tungsten carbide (WC) powder at a high temperature of 1400~1600℃ in a reducing atmosphere. Dense ceramic products can be obtained by hot pressing sintering or hot isostatic pressing sintering.


Extended information

The theoretical carbon content of tungsten carbide is 6.128% (atomic 50%). When the carbon content of tungsten carbide is greater than the theoretical carbon content, free carbon (WC+C) appears in the tungsten carbide. The presence of free carbon will carbonize the surrounding area during sintering. The growth of tungsten grains results in uneven grains of cemented carbide; tungsten carbide generally requires high combined carbon (≥6.07%) free carbon (≤0.05%), and total carbon is determined by the production process and scope of use of cemented carbide.

Tungsten carbide WC grain size requirements of cemented carbide, according to different uses of cemented carbide, use different grain size tungsten carbide; cemented carbide cutting tools, such as cutting machine blade V-CUT knife, etc., the finishing alloy adopts ultra-fine sub-Fine-grain tungsten carbide; medium-grain tungsten carbide is used for rough machining alloy; medium- and coarse-grained tungsten carbide is used as raw material for gravity cutting and heavy-duty cutting alloy.

For mining tools, the rock hardness is high and the impact load is large. Coarse particle tungsten carbide is used; the rock impact is small and the impact load is small. Medium particle tungsten carbide is used as the raw material for wear-resistant parts; when its wear resistance, pressure resistance, and surface finish are emphasized, ultra-fine sub-fine is used Fine and medium-grain tungsten carbide is used as a raw material; impact-resistant tools are mainly made of medium- and coarse-grained tungsten carbide.

Storage: It should be stored in a cool and dry warehouse. During transportation, the packaging container should be intact and protected from rain and sunlight.

Packaging, storage, and transportation: The products are packed in iron drums (plastic drums) lined with polyethylene plastic bags, and the net weight of each bag shall not exceed 50kg. The words "moisture-proof" and "upward" should be written on the outer packaging barrel. The product should be stored in a cool and dry warehouse, and the packaging container should be intact and protected from rain and sunlight during transportation.