The rolling of tungsten plate can be divided into hot, warm and cold rolling. The deformation resistance of tungsten is large, so the common roller can't fully meet the rolling requirements of tungsten sheet, which should use the roller with special material. When rolling, the roller should preheat, according to the different rolling conditions, the preheating temperature is 100 ~ 350 ℃. The blank can be machined when its relative density (the ratio of actual density and theoretical density) is greater than 90%. When the density of the blank is in 92 ~ 94%, the processing performance is good. Hot rolled billet temperature  is between 1350 ~ 1500 ℃, if the deformation process parameters of blooming billet has improper selection, the blank will produce delamination. The start temperature of warm rolling is1200℃, hot rolled plate with thickness of 8 mm can reach 0.5 mm after the warm rolling.
The colour of tungsten steet is gray or silvery white, and it has high hardness, high melting point. So it can away from air erosion in room temperature. What's more, it's mainly used for making the filament and the high speed cutting alloy steel, and ultra hard mold. It is also used in optical instruments, chemical instrument. China is the world's largest tungsten storage state.
Tungsten plate is a metallic element, silver white, hard and brittle, and the melting point is very high, which can be made into very fine wire and special alloy steel. Tungsten belongs to the field of non-ferrous metal, and it is also an important strategic metal, tungsten ore is called "heavy stone" in ancient times. In 1781, the Swedish chemist Carle William Scheler found the scheelite, and extracted the new element of tungstate acid. In1783, the Spaniard Depp aria found wolframite, and extracted the tungstate acid. In the same year, the first time get tungsten powder through the tungsten oxide reduction by carbon, and named the element. The content of tungsten in the crust is 0.001%.  The containing tungsten minerals have been found 20. Tungsten deposits are usually formed by granitic magmatic activity. After smelting, the tungsten is silver white lustrous metal, the melting point, is very high, and hardness is very big. Tungsten is the element with highest melting point.