电焊机2026，Vol.56Issue(2)：63-72,82,11.DOI:10.7512/j.issn.1001-2303.2026.02.07
基于交流电磁场检测(ACFM)的不锈钢焊缝缺陷层间检测技术研究
Research on Interlayer Detection Defects Technology for Stainless Steel Welded Joints based on ACFM
马迎兵 1李哲 1丁建喜2
作者信息
- 1. 中国核电工程有限公司,北京 100840
- 2. 中国石油大学(华东) 机电工程学院,山东 青岛 266580
- 折叠
摘要
Abstract
To address the challenge that certain critical welded structures in nuclear power plant construction cannot be in-spected by conventional radiographic testing(RT),this study proposes the use of Alternating Current Field Measurement(ACFM)technology for inter-layer online inspection of stainless steel welds.An ACFM system and process were developed,including inspection equipment and probes.Simulation of layered weld defects was carried out,and a high-sensitivity narrow-base probe was designed to meet the requirements of inter-layer inspection of stainless steel welds.By designing simulated test blocks containing defects of various types,sizes,and locations,ACFM inspection tests were conducted.The test results show that the ACFM technology achieved a 100%detection rate for the 81 preset unacceptable defects(e.g.,cir-cular defects with diameters≥1.2 mm)in the test blocks,with no missed detections.The 24 non-relevant indications(false calls)that occurred during the tests were confirmed to be caused by weld-surface undulations or excessive roughness,and could be eliminated by examining the surface condition.The research on inter-layer ACFM inspection of stainless steel welds provides a new method and innovative approach for detecting internal weld defects.关键词
ACFM技术/不锈钢焊缝/层间检测/模拟试块Key words
ACFM/stainless steel welded joint/interlayer detection/simulated test block分类
矿业与冶金引用本文复制引用
马迎兵,李哲,丁建喜..基于交流电磁场检测(ACFM)的不锈钢焊缝缺陷层间检测技术研究[J].电焊机,2026,56(2):63-72,82,11.
