大型发电机转轴表面残余应力测试方法比较  

Comparison of Test Methods to Measure the Surface Residual Stress of the Large-size Generator's Shaft

作　　者：谭鹏程[1,2] 王立 顾明亮 姚金传 

机构地区：[1]上海交通大学,200240 [2]上海电气电站设备有限公司发电机厂,200240

出　　处：《电机技术》2013年第5期48-52,55,共6页Electrical Machinery Technology

摘　　要：大型发电机转轴的表面残余应力是转轴制造完成之后的一项重要测试项目,目前,对大型发电机转轴表面残余应力测试的方法主要有切环法和环芯法两种。对环芯法在转轴上进行残余应力测试的实践进行了简要的介绍,并与切环法进行了比较,环芯法测试的数据在一定程度上要高于切环法所测的数据,文章对这两种方法的差异原因进行了分析。The surface residual stress of the large-size generator＇s shaft is one of the most important test items after completing the process of the shaft of the generator.At present, there are two kinds of test methods, cutting ring or ring-core method, to measure the surface residual stress of the large-size generator＇s shaft. The practice to apply the ring-core method to measure surface residual stress of the large-size generator＇s shaft was introduced briefly as well as the comparison was done between the cutting ring and ringcore methods. The measured data by the ring-core method was a little higher than that by the cutting ring method in certain extent. Also, the cause to produce difference coming from the two types of method was analyzed.

关 键 词：大型发电机 转轴 残余应力测试 环芯法 切环法 

分 类 号：TM306[电气工程—电机]