Spherical tungsten carbide powder, a high - tech material for thermal spraying

       

Tungsten carbide can be made by heating a mixture of tungsten and carbon at high temperature. The presence of hydrogen or hydrocarbons can accelerate the reaction. Tungsten carbide powder is an important thermal spray material. The currently used thermal spray tungsten carbide powder is usually produced by casting. The powder is polygonal, has poor fluidity and low hardness, and is difficult to meet the requirements of high-performance thermal spray materials.

Compared with ordinary polygonal tungsten carbide powder, spherical tungsten carbide powder has two notable characteristics: one is spherical appearance, good powder fluidity, and high surface quality of the coated workpiece; second, fine grain and hardness inside the powder Larger and better wear resistance of the coating. Spherical tungsten carbide powder, as a high-tech material for thermal spraying, has attracted the attention of domestic and foreign markets and researchers due to its unique preparation technology and excellent performance. A lot of manpower and material resources have been invested in research and development.