Application Of Tungsten Carbide and Precautions for Health Protection

       

Tungsten carbide can be used in the following aspects:

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

2. It is used for manufacturing cutting tools, wear-resistant parts, melting crucibles of copper, cobalt, bismuth and other metals, and wear-resistant semiconductor films.

3. Used as superhard tool material and wear-resistant material. It can form solid solution with many carbides. Tungsten carbide tic co cemented carbide tools have been widely used.

4. As a modified additive of nbc-c and tac-c ternary system carbides, it can not only reduce the sintering temperature, but also maintain excellent properties. It can be used as aerospace materials.

Toxicity of tungsten carbide and precautions for health protection:

1. Tungsten carbide dust can cause bronchitis, bronchiolitis, closed bronchiolitis and atrophic emphysema.

2. Tungsten carbide will cause the proliferative reaction of lymphoid tissue cells in the lung and gradually harden. The vessel wall thickened and homogenized.

3. People exposed to tungsten carbide dust at work have gastrointestinal dysfunction, kidney stimulation and catarrhal inflammation of upper respiratory tract.

Therefore, in the environment that can contact tungsten carbide powder, it is necessary to use qualified gas masks, dust-proof clothes, gloves and glasses. Dust leakage shall be prevented at all stages of tungsten carbide powder production. Workers shall have a pre employment physical examination, which shall be checked regularly every year. When workers have obvious symptoms of upper respiratory tract, they should temporarily transfer to work and get out of contact with tungsten. In case of pulmonary sclerosis or external respiratory dysfunction, they shall be transferred from their posts.

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