The forming reasons of the creak on railway frog crossing of high manganese steel during heat treatment process were analyzed,and heat treatment process was improved.The creak has been eliminated.

• 分析了高锰钢辙叉在热处理过程中裂纹的形成原因,改进了热处理工艺,并在生产中得到验证,消除了裂纹废品。