Introduction to the Characteristics and Rolling Methods of Tungsten Plate

Tungsten is not only a non-ferrous metal, but also an important strategic metal. After smelting, tungsten is silvery white and glossy metal with high melting point and high hardness.
 
Tungsten plate steel is gray or silver white, with high hardness, high melting point, free from air erosion under normal temperature. It is mainly used for manufacturing filament and high-speed cutting alloy steel, superhard mold, as well as optical instruments and chemical instruments. China is the largest tungsten storage country in the world.
 
The rolling of tungsten plate can be divided into hot rolling, warm rolling and cold rolling. Due to the large deformation resistance of tungsten, ordinary roll can not fully meet the requirements of tungsten plate rolling, so special material roll should be used.
 
During the rolling of tungsten plate, the roll should be preheated. According to different rolling conditions, the preheating temperature is 100-350 ℃. When the relative density (the ratio of the actual density to the theoretical density) of the blank is greater than 90%, it can be processed. When the density of the blank is 92-94%, the processing performance is good. When the temperature of hot rolling is between 1350 ℃ and 1500 ℃, and the deformation parameters are not selected properly, the billets will be stratified. The warm rolling can start at 1200 ℃ and reach 0.5mm for the hot rolled plate with a thickness of 8mm.