Screw nitriding heat treatment processing

Screw is an important part of injection molding machine. Its function is to transport, compact, melt, stir and pressure plastics. All this is accomplished by the rotation of the screw in the barrel. When the screw rotates, the plastic will generate friction and mutual movement on the inner wall of the barrel, the bottom of the screw groove, the screw edge advancing surface, and between the plastic and the plastic. Nitriding heat treatment can obtain a ductile hardening layer with high fatigue strength, wear resistance and corrosion resistance, which can significantly improve the heat treatment quality and service life of parts.