裂纹脉冲漏磁检测试验研究  

Experiment Study on PMFL Testing for Cracks

作　　者：刘耀文 Liu YaoWen(Experiment Study on PMFL Testing for Cracks)

机构地区：[1]福建省锅炉压力容器检验研究院三明分院

出　　处：《福建冶金》2019年第3期31-33,共3页Fujian Metallurgy

摘　　要：采用基于低频脉冲激励的脉冲漏磁检测技术,对铁磁性部件中不同埋深的皮下裂纹进行检测,该方法能够使裂纹在工件表面产生较强、范围较大的漏磁场,使得对皮下裂纹的检测更加有利。该方法能够对皮下裂纹进行深度、长度的近似测量和定位,具有潜在应用价值。Utilize pulsed magnetic flux leakage(PMFL) based on low frequency pulse excitation, inspect subsurface clacks with different depth, the method is different from conventional magnetic flux leakage(MFL). This technology can generate excellent and bigger area leakage magnetic field near the surface of workpieces, which is advantageous for subsurface clack inspection. The method can be used to locate subsurface clacks and determine its approximate length and depth, the inspection method has potential application value.

关 键 词：脉冲漏磁 皮下裂纹 缺陷检测 

分 类 号：TG115.28[金属学及工艺—物理冶金]