Ferro Tungsten

Tungsten application in the steel industry, is added in the form of ferro tungsten. Tungsten concentrate and iron filings, etc. are reduced in the arc furnace to melting ferro tungsten.

Tungsten and iron are the main component of ferro tungsten, it also contains manganese, silicon, carbon, phosphorus, sulfur, copper, tin and other impurities, commonly used ferro tungsten containing 70% (FeW75) and 80% (FeW80).

Tungsten added into steel can make steel grain refinement, improve its high temperature hardness, wear resistance and impact strength. If ferro tungsten smelted by electric furnace with electric, due to the high melting point, it can not be released in aqueous form. So usually use caking or iron production method to produce ferro tungsten. Iron production method is common used in modern industry. During the steel making process, add tungsten concentrate, use ferro silicon or carbon as reducing agent, tungsten is added into steel in the reduction process.

The main function of tungsten steel is high-speed cutting steel and die steel, the advantage is under high temperature (700 ℃ -800 ℃), can be automatically quenched and secondary hardening in the air, maintain a very high hardness and abrasive resistance. Tungsten steel is used for manufacturing tools such as drill bits, millings, drawing dies, molds, pneumatic tool parts, etc.. Tungsten magnet is chrome permanent magnet steel, tungsten cobalt magnet is cobalt hard magnetic material. They have high magnetization and coercivity, which are important magnetic materials.

• < Prev
• Next >