副箱同步器锁止销热处理软点原因探究.pdf
热处理
HeatTreatment
副箱同步器锁止销热处理软点原因探究
12211
刘永青,杜宇航,储召萍,刘一,郭子青
1.陕西法士特汽车传动集团有限责任公司咸阳精密机械分公司陕西咸阳712000
2.陕西法士特汽车传动集团有限责任公司陕西西安710119
摘要:,
主要针对副箱同步器锁止销渗碳淬火后存在的局部软点和表面硬度不合格问题进行原因排查及探
。:,
究结果表明软点是由于热处理渗碳层深局部不合格导致的而渗碳层深局部不合格的原因是热处理前存
、,,。,
在切削液清洗液等残留物因工艺设备特殊性导致渗碳过程中阻渗针对此原因进行了工艺优化改进
从而解决了软点问题。
关键词:;;;
锁止销表面状态阻渗软点
Explorationintothereasonsforsoftpoints
intheheattreatmentofthelock-pinofthe
auxsynchronizer
12211
LIUYongqing,DUYuhang,CHUZhaoping,LIUYi,GUOZiqing
,,,
1.ShaanxiFastAutoDriveRefcoGroupLtd.XianyangPrecisionMachineryBranchXianyang712000
Shaanxi,China
2.ShaanxiFastAutoDriveRefcoGroupLtd.,Xian710119,Shaanxi,China
Abstract:Inresponsetotheproblemthattherearelocalsoftpointsandsurfacehardnessunqualifiedonthelock-
pinoftheauxsynchronizeraftercarburizingandquenching,thereasonsareinvestigatedandexplored.Theresults
showthatthesoftpointsarecausedbythedepthofthelocallyunqualifiedcarburizedlayerafterheattreatment,and
thereasonforthelocalunqualifiedofthedepthofcarburizedlayeristheresidueofcuttingfluidandcleaningfl