盐浴氮碳共渗40Cr钢凸轮轴双联齿轮的变形控制  

Distortion controlling of 40Cr steel camshaft double-gear during salt bath nitrocarburizing

作　　者：任伟霞 文九巴[2] 高一新 

机构地区：[1]河南柴油机重工有限责任公司,河南洛阳471039 [2]河南科技大学材料科学与工程学院,河南洛阳471039

出　　处：《金属热处理》2009年第12期90-92,共3页Heat Treatment of Metals

摘　　要：对40Cr钢凸轮轴双联齿轮加工工序、预先热处理工艺和检测结果进行分析,找到了造成齿轮内孔盐浴氮碳共渗畸变的主要因素。通过调整加工工序和预先热处理工艺,提高了齿轮心部强度,机加工应力得到了有效消除,从而使凸轮轴齿轮盐浴氮碳共渗畸变得到有效控制。By analyzing machining-process,pre-heat treatment process and test results,the factors that influenced distortion of the gear during salt bath nitrocarburizing were found out.By adjusting machining process and pre-heat treatment process,matrix strength of the gear is improved,and residual stress was reduced,then distortion of the gear is controlled.

关 键 词：40CR钢 齿轮 盐浴氮碳共渗 变形及控制 

分 类 号：TG156.8[金属学及工艺—热处理]