金属薄壁管材涡流检测中异常信号的产生原因
Causes of Anomalous Signals in Eddy Current Testing of Thin Wall Tubes
摘 要
以6061铝合金冷拉薄壁管材、0Cr21Ni6Mn9N奥氏体不锈钢冷拔薄壁管材为例，结合目视检查、荧光渗透检查、金相分析等手段，探讨了金属薄壁管材涡流检测中异常信号可能产生的原因。通过对各种因素的排查，确定了铝合金管材是由于内壁开裂引起异常信号，不锈钢管材是由于变形不均匀引起异常信号。得出的结论可为材料和制造工艺相类似的管材涡流检测中信号的解释与判定提供参考。
铝合金管材
不锈钢管材
异常信号
Eddy current testing
Aluminum alloy tube
Stainless steel tube
Anomalous signals
Abstract
Taking cold-pulled thin walled tubes of 6061 aluminum alloy and cold-drawn thin walled tubes of 0Cr21Ni6Mn9N stainless steel as example, through the application of visual inspection, fluorescent penetrating inspection and metallurgical analysis, the possible causes of anomalous signals in eddy current testing of thin walled tubes were studied. In this paper, the main cause of anomalous signals was found to be the inner surface cracks in aluminum alloy tube, and was found to be the inhomogeneous deformation of wall in 0Cr21Ni6Mn9N stainless steel tubes. The study also provides references for the signal judge in eddy current testing of other similar tubes.
中图分类号 TG115.28
所属栏目 试验研究
基金项目
收稿日期 2014/3/11
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备注王东升(1980-)，男，工程师，硕士，主要从事电磁(涡流)检测技术研究。
引用该论文: WANG Dong-sheng,XU Ke-bei1 CHEN Xing,LI Shuo-ning,HE Yue-wei. Causes of Anomalous Signals in Eddy Current Testing of Thin Wall Tubes[J]. Nondestructive Testing, 2014, 36(7): 52～55
王东升,徐可北,陈星,李硕宁,何跃维. 金属薄壁管材涡流检测中异常信号的产生原因[J]. 无损检测, 2014, 36(7): 52～55
被引情况:
【1】李冬,林俊明,许贵平,黄海翔,高三杰,王晓磊,李恒羽,党辉,于军辉, "锆合金管材涡流检测缺陷的轴向定位",无损检测 38, 31-35(2016)
【2】曾玉华,吴海林,韩捷,王家建,陈霞,陈胜宇, "卧式蒸汽发生器传热管涡流检测缺陷信号的准确性",无损检测 38, 34-37(2016)
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参考文献
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【3】BURET J-L, VUILLAUME D.Method for the reduction of noise during the Eddy-current testing of tubes and tubes produced with that procedure: France,FR2708741(B1)［P］.1995-09-08.
【4】WENDT S E, HENTSCHER S R, RAITHEL D C. Correlation between eddy current signal noise and peened surface roughness［C］// Review of Progress in Quantitative Nondestructive Evaluation,American:American Institute of physics,2007,1205-1212.
【5】李恒羽,李小宁,梁永红.锆管涡流检测中的异常噪声分析［J］.无损检测,2008,30(2):107-109.
【6】王松涛,杨柯,单以银，等.高氮奥氏体不锈钢与316L不锈钢的冷变形行为研究［J］.金属学报, 2007,43(2):171-176.
【7】王松涛,杨柯,单以银，等.冷变形对高氮奥氏体不锈钢组织与力学行为的影响［J］.金属学报, 2007,43(7):713-718.
【2】KHAN S H, ALI F, IQBAL M A.Eddy current detection of changes in stainless steel after cold reductions［EB/OL］.[2008-10-04].http://www.ndt.net.
【3】BURET J-L, VUILLAUME D.Method for the reduction of noise during the Eddy-current testing of tubes and tubes produced with that procedure: France,FR2708741(B1)［P］.1995-09-08.
【4】WENDT S E, HENTSCHER S R, RAITHEL D C. Correlation between eddy current signal noise and peened surface roughness［C］// Review of Progress in Quantitative Nondestructive Evaluation,American:American Institute of physics,2007,1205-1212.
【5】李恒羽,李小宁,梁永红.锆管涡流检测中的异常噪声分析［J］.无损检测,2008,30(2):107-109.
【6】王松涛,杨柯,单以银，等.高氮奥氏体不锈钢与316L不锈钢的冷变形行为研究［J］.金属学报, 2007,43(2):171-176.
【7】王松涛,杨柯,单以银，等.冷变形对高氮奥氏体不锈钢组织与力学行为的影响［J］.金属学报, 2007,43(7):713-718.
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