Application of black tungsten wire
Black tungsten wire is mainly used to produce spiral incandescent filament, cathode and bracket structure of electric vacuum, heating element of high temperature furnace and evaporation source of gold plating process, used to make electric light sources and electric vacuum parts, used as high temperature heating elements and high temperature structural parts, and tungsten spirals for vacuum evaporation. The thicker tungsten wire, which is straightened, surface-polished, and cut into rods, is widely used as a glass-metal lead seal in the lighting and electronics industries.
