China is a power country that has a lot of tungsten and producing most tungsten. It is important for the world to trade tungsten commodity. In recent years, the production, the quality of research and exports of tungsten products has made considerable progress. But our tungsten carbide share in world trade remains low. How use rationally of our abundant resources of tungsten, tungsten product development and improve the level of deep processing technology to improve the quality of deep-processed products, open up new applications of tungsten, tungsten improve the comprehensive utilization of by-products, which are not only for the development of cemented carbide industry has far-reaching impact, and ferroalloy industry is also important.

 

Tungsten trioxide vacuum carbon reduction method:

Vacuum carbon reduction of tungsten trioxide law refers allow the presence of carbon impurities in tungsten powder (including WC) or impurity content requirements under those circumstances is not very strict, with industrial pure carbon reduction preparing tungsten powder or tungsten carbide powder is easy and economical methods. As shown in the following table, with a reduction of carbon or tungsten carbide powder, tungsten powder, tungsten carbide as the casting material is fully meet the requirements. You can use a purity of 98% or higher purity tungsten trioxide artificial scheelite, carbon black! Graphite powder as a reducing agent in a vacuum furnace reduction and carbonization and prepared tungsten powder and tungsten carbide powder.

Cast tungsten carbide technical conditions