基于LCR波的20CrMnTi渗碳淬火齿轮表面残余应力检测  

The testing of surface residual stress of 20CrMnTi carburizing quenching gear based on LCR wave

作　　者：汪丽丽[1] 吴伟[1] 王茹 邬冠华[1] WANG Lili WU Wei WANG Ru WU Guanhua(Key Laboratory of Nondestructive Testing of Ministry of Education, Nanchang Hangkong University, Nanchang K3（X）63 Xi＇an Tianli Clad Metal Materials Co. ,Ltd. ,Xi＇an 710201)

机构地区：[1]南昌航空大学无损检测技术教育部重点实验室,南昌330063 [2]西安天力金属复合材料有限公司,西安710201

出　　处：《无损探伤》2017年第1期9-12,20,共5页Nondestructive Testing Technology

摘　　要：齿轮作为受到交变疲劳载荷的零件,表面残余应力分布对疲劳强度有重大影响,本文以20CrMnTi渗碳淬火齿轮为研究对象,基于声弹性理论,研究临界折射纵波残余应力检测原理,设计并搭建了齿轮表面残余应力检测系统,在实现过程中采用一发一收的探头布局模式,对20CrMnTi渗碳淬火齿轮表面残余应力分布进行分区域检测,分析残余应力的分布情况。Gear as by alternating fatigue load of parts, surface residual stress distribution has a signifi- cant impact on the fatigue strength, the paper 20CrMnTi carburized gear for the study, based on the a- coustic elastic theory, critically refracted longitudinal waves of residual stress measurement principle, de- signed and built gear surface residual stress detection system, in the implementation process using pitch-- catch probes layout mode, 20CrMnTi carburized gear surface residual stress distribution sub--region de- tection, analysis of the distribution of residual stresses.

关 键 词：齿轮 临界折射纵波 表面残余应力 20CrMnTi 

分 类 号：TG115.28[金属学及工艺—物理冶金]