Application effect of polymer quenching cooling medium in quenching equipment
Application effect of quenching equipment Most of the induction quenched parts are medium carbon steel and low and medium alloy structural steel, and the use of polymer quenching cooling medium has achieved good results. For example, for corrugated rolls made of 48CrMo steel, the hardness of the roll tooth surface should be ≥58HRC, and the hardening depth should be ≥1mm. In the past, when water was used as a quenching cooling medium, the problem of quenching cracking occurred. The use of JY8-20 polymer quenching cooling medium for ultra-frequency and medium-frequency quenching of corrugated rolls can better solve the problem of quenching cracks. The outer diameter of the quenched part of a certain corrugated roll is 360.96mm. After induction quenching with JY8-20 polymer quenching cooling medium, the surface hardness is 58-62HRC, and the depth of the hardened layer is 3mm. More than 5,000 pieces of various corrugated rolls were processed by induction hardening without cracks.