海油平台管线母材的渗透检验和磁粉检验对比  

作　　者：蒋桂通 黄细红 

机构地区：[1]海洋石油工程股份有限公司 [2]航天精工股份有限公司天津制造分公司

出　　处：《科技视界》2020年第19期96-97,共2页Science & Technology Vision

摘　　要：为了保证海洋石油平台管线的质量,通常对管线母材进行无损探伤,主要采用磁粉检测和渗透检测两种方法,这两种无损检测方法均为表面无损检测,主要看管线表面是否存在裂纹、折叠、气孔等缺陷。磁粉检验主要适用于导磁材料,如碳钢管线的检验,渗透检验则对材料是否导磁无要求,渗透检验通常应用在非导磁材料,如不锈钢管线的检验。实践证明,磁粉检验检测碳钢管线的灵敏度比渗透检验高,而渗透检验检测不锈钢管线的灵敏度比磁粉检验高。In order to ensure the quality of pipelines on offshore oil platforms,nondestructive testing is usually carried out on the base materials of pipelines.Magnetic particle inspection and penetrant inspection are mainly used.Both of these nondestructive testing methods are surface nondestructive testing, which mainly depends on whether the surface of pipelines has defects such as cracks,folding,pores,etc. Magnetic particle inspection is mainly applicable to magnetic conductive materials,such as carbon steel pipelines.Penetrant inspection has no requirement on whether the materials are magnetic conductive.Penetrant inspection is usually applied to non-magnetic conductive materials,such as stainless steel pipelines.Practice has proved that the sensitivity of magnetic particle inspection for carbon steel pipelines is higher than that of penetrant inspection,while the sensitivity of penetrant inspection for stainless steel pipelines is higher than that of magnetic particle inspection.

关 键 词：渗透检验 磁粉检验 灵敏度 

分 类 号：TK228[动力工程及工程热物理—动力机械及工程] TH49[机械工程—机械制造及自动化]