Black tungsten wire is mainly used to produce spiral incandescent lamp filament, cathode and support structure of electric vacuum device, heating element of high temperature furnace and evaporation source of gold plating process. Manufacturing electric light sources and electric vacuum parts, used as high-temperature heating elements and high-temperature structural parts, and used to make tungsten spirals for vacuum evaporation.
White tungsten wire is tungsten wire after alkaline washing or electrolytic polishing of black tungsten wire. Compared with black tungsten wire, the surface of white tungsten wire is smooth, bright and clean. Widely used in the electric vacuum industry to produce various types of electronic tubes. Filaments for H series automotive lamps, halogen lamps and other special bulbs produced in the electric light source industry.
