Cause Analysis of High Frequency Quenching Cracking of Double Gears
Author of the article:YI Nan;YAN Yangyang
Author's Workplace：School of Materials Engineering, Shaanxi polytechnic Institute, Xianyang 712000, China
Key Words：double gear high frequency quenching arc crack
Abstract：
The cracking phenomenon of small modulus double gear of 45 steel during high frequency quenching was analyzed by means of macroscopic inspection, microscopic inspection and depth measurement of quenching layer. The results show that the crack in the double gear is a typical arc crack, which is mainly caused by the unreasonable distribution of high frequency hardening layer. However, the coarse microstructure of preheat treatment will promot the generation of arc crack.
