压力气瓶焊缝的磁记忆检测研究  

Metal Magnetic Memory Testing on the Weld of Pressure Vessel

作　　者：陈克[1] 李宏雷[1] 雷闽[1] 王朝霞[2] 

机构地区：[1]北京市特种设备检测中心,北京100029 [2]北京理工大学,北京100081

出　　处：《压力容器》2007年第8期13-16,共4页Pressure Vessel Technology

基　　金：北京市自然科学基金项目(3052014);国家自然科学基金项目(50275012);北京市重点学科资助项目(XK100070424)

摘　　要：金属焊接引起的残余应力分布的不均匀程度是影响设备寿命的重要因素。采用磁记忆无损检测方法可以检测出应力集中区。对乙炔气瓶的环向焊缝进行了磁记忆方法检测,并通过预制缺陷的管件焊接试验,说明磁记忆方法对于检测焊接的结构组织不均匀和焊接缺陷均有效。Weld residual stress degree of irregularity is the important influencing factor for equipment life. Metal magnetic memory （MMM） testing method can find the stress concentration area. Circumferential welding seams of acetylene cylinders were tested using MMM technology and welded pipes with prefabricated defects were carried out. The results show that MMM testing method is effective to confine the weld areas where there have inhomogeneous structures and defects.

关 键 词：焊缝 残余应力 焊接缺陷 金属磁记忆 

分 类 号：TQ050.3[化学工程] TG115.28[金属学及工艺—物理冶金]