短接小径管的漏磁检测  

Magnetic leakage testing for short-circuit small diameter pipes

作　　者：杨志军[1] 周元培 李云辉 曲鹏 YANG Zhijun;ZHOU Yuanpei;LI Yunhui;QU Peng(College of Mechanical Science and Engineering,Northeast Petroleum University,Daqing 163318,China)

机构地区：[1]东北石油大学机械科学与工程学院,大庆163318

出　　处：《无损检测》2020年第5期1-4,共4页Nondestructive Testing

基　　金：国家青年自然科学基金资助项目(51607035);国家质量监督检验检疫总局科技计划项目(2017QK050);国家质量监督检验检疫总局科技计划项目(2016QK163);浙江省质量技术监督系统科技项目(20180352)

摘　　要：建立了小径管缺陷漏磁检测的三维有限元模型,得到缺陷漏磁场的空间分布特性。通过改变缺陷的深度和宽度,研究了腐蚀缺陷对漏磁检测信号的影响,研发了短接小径管的漏磁检测装置,在规格(外径×壁厚)为Ф27mm×3.5mm小径管内壁加工了人工腐蚀坑缺陷,并对模拟缺陷进行检测。结果表明:漏磁检测技术可以实现短接小径管腐蚀缺陷的快速扫描检测。In this paper,the magnetic flux leakage detection technology is used to study the short-circuit smalldiameter tube detection technology.A three-dimensional finite element model of small-diameter tube defect magnetic flux leakage detection is established,and the spatial distribution characteristics of the leakage magnetic field are obtained.By changing the influencing factors such as depth and width of defects,the influence of corrosion defect parameters on the leakage magnetic field signal is studied,and the spatial distribution characteristics of the leakage magnetic field are found.A short-circuit small-diameter tube magnetic flux leakage detecting device was developed,and the inner diameter of the small-diameter tube with a size of Ф27 mm×3.5 mm was artificially simulated and the test was performed.The experimental results show that the magnetic flux leakage detection technology can realize the detection of short-circuit small diameter pipes.

关 键 词：短接小径管 腐蚀缺陷 漏磁检测 有限元 

分 类 号：X924.2[环境科学与工程—安全科学] TG115.28[金属学及工艺—物理冶金]