Page 126 - 无损检测2024年第十期
P. 126
实践经验
实践经验
DOI:10.11973/wsjc240089
磁粉检测试片不同缺陷槽的功能探讨
叶永魁,周 浩,吴志男,王亚州,陈学晋
(福建宁德核电有限公司,宁德 352000)
摘 要:当前,在使用单磁化方向磁粉探伤机检测时,一般利用现行磁粉检测试片的线性缺陷
槽和圆形缺陷槽进行检测灵敏度验证。参考相关国家标准、国际标准,结合磁粉检测工作的实际
经验,通过分析发现:用现行试片在一个平面检测区域内进行检测灵敏度验证时,有些偏离磁场
磁化方向的角度朝向上的检测灵敏度验证有时是失效的;实际工作中,现行试片缺陷槽难以用于
1次磁化有效检出缺陷的角度范围测算进而计算出最少磁化次数,故难以使用现行试片缺陷槽来避
免漏检;多角度缺陷槽磁粉检测试片能解决现行试片存在的灵敏度验证有效性不足与实际检测工
作中难以测算最少磁化次数等问题。该结论有望为磁粉检测的检测灵敏度验证提供一些参考。
关键词:磁粉检测;灵敏度;试片;磁场;磁场强度;磁化方向
中图分类号:TG115.28 文献标志码:B 文章编号:1000-6656(2024)10-0088-05
Exploration of the functions of different defect grooves in magnetic particle testing specimens
YE Yongkui, ZHOU Hao, WU Zhinan, WANG Yazhou, CHEN Xuejin
(Fujian Ningde Nuclear Power Co., Ltd., Ningde 352000, China)
Abstract: Currently, when using a single magnetization direction magnetic particle testing machine for testing,
sensitivity verification is generally carried out using the linear defect groove and circular defect groove of the current
magnetic particle testing specimen. The authors referred to relevant national and international standards, combined with
practical experience in magnetic particle testing work, and through analysis, found that: when using current test pieces
to verify the detection sensitivity in a planar detection area, some angles deviating from the direction of magnetic field
magnetization were facing upwards, and the detection sensitivity verification sometimes failed; In practical work, it was
difficult to use the current defect slot of the test piece to calculate the angle range for effective detection of defects in one
magnetization and calculate the minimum number of magnetization times, so it was difficult to use the current defect slot
of the test piece to avoid missed detections; Multi angle defect groove magnetic particle testing specimens can solve the
problems of insufficient sensitivity verification effectiveness and difficulty in calculating the minimum magnetization number
in actual testing work for all current specimens.
Key words: magnetic particle testing; sensitivity; test block; magnetic field; magnetic field intensity; magnetization
direction
磁粉检测试片主要功能之一是检测灵敏度验证; 测试片中的缺陷槽有线性缺陷槽(文章将一字型缺
有些研究试验利用试片中的圆形缺陷槽进行1次磁 陷槽、十字型缺陷槽均视为线性缺陷槽)、圆形缺陷
化有效检出缺陷角度范围的测算,进而计算最少磁 槽两类。文章对使用单磁化方向磁粉探伤机时,国
化次数以避免漏检。目前国内外主要通用的磁粉检 内外主要磁粉检测试片的缺陷槽进行检测灵敏度验
证的有效性、测量1次磁化有效检出缺陷的角度范
围进而计算最少磁化次数的可行性、实际检测中试
收稿日期:2024-03-05
片的可用性等问题进行分析;同时针对现行试片存
作者简介:叶永魁(1969—),男,本科,高级工程师,主要从事
在的检测灵敏度验证有效性不足、实际检测工作中
无损检测工作
通信作者:叶永魁,yeyongkui@sina.com 难以进行最少磁化次数测算等问题,提出一种多角
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2024 年 第 46 卷 第 10 期
无损检测

