Spherical metal tungsten powder has good fluidity, and is mainly used as a diamond drill bit for petroleum drilling and a raw material for petroleum perforating bullets. It can be prepared by a plasma spheroidization method.
Characteristic
The appearance of spherical metal tungsten powder is steel gray powder, which is polyhedron, powder is nearly spherical, has good fluidity, high purity and low oxygen content.
Applications
Tungsten metal tungsten powder is mainly used as diamond drill bit for oil drilling (as carcass material) and raw material for oil perforating bullets, high-temperature coating of combustion chamber and other wear-resistant and high-temperature-resistant component coatings.
Preparation
The plasma spheroidization method is to add ordinary tungsten powder to the plasma jet to melt the surface (or the whole) of the tungsten powder particles to form droplets. The droplets shrink due to surface tension to form a sphere, and the sphere is fixed by rapid cooling, so that spherical metal tungsten powder is obtained.
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