Adult 12 section steel step hardened - but frame and heat treated

Abstract

 Proposes a new method of surface hardening and strengthening for Cr12 type steel—gradational quenching-nitriding compound heat treatment method, which is successfully applied to the heat treatment of cold extrusion dies for toothpaste tubes, which significantly improves the surface hardness and hardness of the dies. Wear resistance, so that the life of the mold is increased by 0.3 to 3 times compared with the original.