Steel based cermet screw is composed of high alloy steel core and surface tungsten carbide. The manufacturing process includes steel core material processing, mechanical processing, heat treatment, surface manufacturing, surface finishing, etc. The co… 【More】

Powder metallurgy screw (HIP) is made by vacuum metallurgy of steel core and NiCrBFe(Si) or NiCrBFe(Si)+WC in special steel molds. The core of the screw is pearlite or martensite, and the surface is martensite or martensite plus tungsten car… 【More】