钢轨探伤车对钢轨焊缝缺陷的检测能力  

Steel rail weld defect inspection ability of steel rail flaw detection vehicle

作　　者：李培 石永生 张玉华 马运忠 钟艳春 熊龙辉 LI Pei;SHI Yongsheng;ZHANG Yuhua;MA Yunzhong;ZHONG Yanchun;XIONG Longhui(Infrastructure Inspection Rearch Institute,China Academy of Railway Science Co.,Ltd.,Beijing 100081,China;Railway Infrastructure Inspection Center,China State Railway Group Co.,L td.,Beijing 100081,China)

机构地区：[1]中国铁道科学研究院集团有限公司基础设施检测研究所,北京100081 [2]中国国家铁路集团有限公司铁路基础设施检测中心,北京100081

出　　处：《无损检测》2021年第4期1-4,共4页Nondestructive Testing

基　　金：中国铁道科学研究院集团有限公司基金资助项目(2020YJ059)。

摘　　要：为了验证钢轨探伤车对焊缝缺陷的检测能力,设计了人工模拟焊缝缺陷,分别以不同速度对钢轨进行检测。结果表明,在钢轨探伤车检测工艺能够覆盖的有效检测区域内,人工模拟焊缝缺陷的平均检出率为97.2%,其中轨头、轨腰中φ5mm横通孔当量的体积型缺陷的检出率为100%,轨颚处φ3mm横通孔当量的体积型缺陷的检出率为91.7%。检测结果可为同行提供参考。In order to verify the steel rail weld defect inspection ability of rail flaw detection vehicle,artificial weld defects are designed and tests of different steel rail are carried out.Test results show that within the weld effective detection area which can be covered by the flaw detection technology of rail flaw detection vehicle,the average detection rate of artificial weld defects is 972%.The defect detection rate of φ5 mm cross hole equivalent volume defects at the rail head and waist is 100%,and φ3 mm cross hole equivalent volume defects at the rail jaw is 91.7%.The test results can be used as a reference for peers.

关 键 词：超声波 钢轨探伤车 焊缝 轮式探头 

分 类 号：TG115.28[金属学及工艺—物理冶金]