铁磁性填充物对缺陷漏磁检测的影响  

Influence of ferromagnetic filler on magnetic flux leakage testing

作　　者：杨志军[1] 高月辉 张志来 孙晗 曹怀情 杨江 YANG Zhijun;GAO Yuehui;ZHANG Zhilai;SUN Han;CAO Huaiqing;YANG Jiang(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》2021年第12期37-40,共4页Nondestructive Testing

基　　金：国家青年自然科学基金资助项目(51607035);国家质检总局科技计划项目(2017QK050);江苏省市场监督管理局科技计划项目(KJ204126);浙江省质监系统科技计划项目(20180352)。

摘　　要：开展了铁磁性填充物对储罐底板缺陷漏磁检测影响的仿真分析与试验研究。以贝尔佐纳涂料为铁磁性填充物,建立内部填充了贝尔佐纳涂料的不同体积缺陷的底板有限元模型,得到了缺陷漏磁场空间分布状态和变化规律。研究结果表明:填充了贝尔佐纳涂料的缺陷可以采用漏磁检测法检出,且其漏磁场的变化规律与未填充贝尔佐纳涂料缺陷的漏磁场变化规律相同,但其漏磁场强度要小于未填充贝尔佐纳涂料缺陷的漏磁场强度;对于不同体积的缺陷,随着缺陷体积的增大,贝尔佐纳涂料对检测结果的影响呈增大的趋势。Simulation analysis and test of the effect of ferromagnetic filler on the magnetic flux leakage detection of tank floor defect were carried out in this paper. By using Belzona as ferromagnetic filler, the finite element model of the bottom plate filled with different size defects of Belzona was hence established, and the spatial distribution and variation law of the leakage magnetic field of the defects were obtained. The laboratory research shows that the defects filled with Belzona can be detected by magnetic flux leakage testing method, and the change rule of magnetic flux leakage is the same as that of unfilled Belzona, but the magnet flux leakage intensity is less than that of unfilled Belzona;for defects of different volumes, with the increase of defect volume, the effect of Belzona on the test result shall show a tendency to increase.

关 键 词：贝尔佐纳涂料 铁磁性材料 漏磁检测 有限元分析 腐蚀 

分 类 号：X948[环境科学与工程—安全科学] TG115.28[金属学及工艺—物理冶金]