作　　者： ; ; ; ; ;

机构地区： 华中科技大学机械科学与工程学院

出　　处： 《无损检测》 2004年第2期59-61,共3页

摘　　要： 对弯头漏磁无损检测仪进行了研究,运用漏磁检测原理,采用固定的磁化器对弯头进行整体磁化,检测探头沿弯头外表面扫描运动并结合空间位置测量编码器实现漏磁信号的高精度定位和空间相关处理,解决了弯头表面漏磁场信号复杂、缺陷检测信号信噪比低的难题,为铁磁性管道弯头的无损探伤提供了一种有效的方法。 The method for inspecting pipeline elbows based on the principle of magnetic leakage flux testing was studied. The whole elbow was magnetized by a fixed magnetizer and was scanned by a probe outside the elbow. High-precision locating and space correlation processing were realized with the combination of space-location encoder to solve the problems of complicated surface leakage field signals and low signal-to-noise ratio. It is an effective nondestructive testing method for magnetic pipeline elbows.

关 键 词： 漏磁检测 管道弯头 空间采样 无损检测仪 磁化器

领　　域： [交通运输工程] [金属学及工艺] [金属学及工艺]