带内花键零件的畸变控制方法

Distortion control method of parts with internal spline

由于热处理畸变导致的内花键塞规检查不合格一直是带内花键零件常见的问题。鉴于带内花键零件热处理畸变影响因素众多,借助“淬火畸变公差带”概念,综合分析了零件结构类型、零件热处理前的工艺尺寸、热处理工艺参数(奥氏体化温度、时间、装炉量、冷却速度、装卡方式等)、材料类型、锻造正火工艺等对带内花键零件热处理畸变的影响,综合考虑各种因素的耦合状况,提出了解决带内花键零件热处理畸变问题的一系列解决方案。

Due to the heat treatment distortion,the parts with internal spline cannot pass the plug gauge check has been a common problem.In view of the many factors influencing the heat treatment distortion of parts with internal spline,with the help of the concept of“quenching distortion tolerance zone”,the part structure type,part size before heat treatment process,heat treatment process parameters(including austenitizing temperature,soaking time,furnace volume,cooling rate,loading method),material type and normalizing process after forging on the heat treatment distortion of the parts with internal spline were comprehensively analyzed,and a series of solutions to solve the problem of heat treatment distortion of the parts with internal spline were proposed by coupling all those various factors.