道岔专用涡流检测探头的设计及应用  

Design and Application of Eddy Current Testing Probe for Turnout

作　　者：黄凤英 林俊明[2] 任硕 安尚文 HUANG Fengying;LIN Junming;REN Shuo;AN Shangwen(Metals&.Chemistry Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China;Eddysun(Xiamen)Eletronic Co.,Ltd.,Xiamen 361008,China)

机构地区：[1]中国铁道科学研究院集团有限公司金属及化学研究所,北京100081 [2]爱德森(厦门)电子有限公司,福建厦门361008

出　　处：《无损探伤》2022年第3期23-25,共3页Nondestructive Testing Technology

基　　金：中国铁道科学研究院集团有限公司院基金(2051JHE601);中国铁道科学研究院集团有限公司金属及化学研究所所基金(2019JH0302)。

摘　　要：道岔轨件特殊部位检测空间有限,使用常规检测探头不易实施检测,探伤困难。本文设计的道岔专用涡流检测探头采用多工位结构,具有8个检测工位,有效覆盖道岔轨件关键薄弱部位,每个工位检测轨面缺陷信噪比不小于10dB,能快速完成道岔轨件表面检测。Switch rail and nose rail are special-shaped rails.It was difficult to detect the limited and special parts of the rail with normal probes.The special multi-position Eddy current testing probe was designed which was based on studying the structure of turnout and analyzing the on-site flaw detection.The experimental study and field application show that the structure of the multi-station probe is reasonable, and it can cover the key weak parts of the switch rail effectively.It has 8 detection stations and signal-to-noise ratio no less than 10 dB.It can complete the inspection of the surface of the switch rail quickly.

关 键 词：涡流检测 道岔 表面裂纹 

分 类 号：TG115.28[金属学及工艺—物理冶金]