Classification of tungsten plate
Tungsten plate rolling can be divided into hot rolling, warm rolling and cold rolling. Due to the large deformation resistance of tungsten, ordinary rolls cannot fully meet the requirements of tungsten plate rolling, and rolls made of special materials should be used. When rolling, the roll should be preheated, according to different rolling conditions, the preheating temperature is 100～350℃.
The relative density of the billet (the ratio of actual density to theoretical density) is greater than 90% can be processed, billet density of 92 ~ 94% when processing performance is good. Hot rolling of the opening temperature between 1350 ~ 1500 ℃, the opening of the billet deformation process parameters are not properly selected, the billet will produce delamination. The start temperature of warm rolling is 1200 ℃, the thickness of 8 mm hot rolled plate, by warm rolling can reach 0.5 mm.
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