热处理及摩擦焊对21－4N硬度的影响  

Influence on the Hardness of 21-4N during the Heat Treatment and Friction Welding

作　　者：吉开斌 袁相春[2] 

机构地区：[1]湖南气门厂 [2]机械部武汉材料保护研究所

出　　处：《汽车工艺与材料》1996年第12期24-26,共3页Automobile Technology & Material

摘　　要：为解决２１－４Ｎ钢硬度离散度较大问题，对已半固溶的２１－４Ｎ钢进行了时效处理，同时研究了４Ｃｒ９Ｓｉ２和２１－４Ｎ钢摩擦焊接热影响区的硬度变化。结果表明，不仅解决了硬度问题。To settle down the problem of the widely dispersed hardness of 21-4N steel,this paper proceeds the aging treatment of 21-4N steel in the semisolid state,and researches contemporary the change of hardness in the heat influential area generated in friction welding of 4Cr9Si2 and 21-4N steels.The results indicate that not only the hardness problem can be settled down,but also discovers that through partly tempering treatment of the welding rod 4Cr9Si2,we can change the hardness in the heat influential area of 21-4N steel.

关 键 词：21-4N钢 硬度 汽车发动机 气门 热处理 摩擦焊 

分 类 号：U464.134.4[机械工程—车辆工程] TG162.7[交通运输工程—载运工具运用工程]