不锈钢波纹管早期失效原因的分析  

Analysis on Early Failure of Stainless Steel Ripple Pipe

作　　者：陈云祥[1] 郭琳[1] 许岚 

机构地区：[1]浙江机电职业技术学院,浙江杭州310053 [2]杭州市机械科学研究院,浙江杭州310001

出　　处：《热处理技术与装备》2009年第2期44-47,共4页Heat Treatment Technology and Equipment

摘　　要：对冷凝器内不锈钢波纹管的早期失效,本文运用金相显微镜、扫描电子显微镜和能谱仪等手段对波纹管的材质、微观组织和腐蚀现象进行分析研究。结果表明,波纹管为点状穿壁破损泄漏,在破损口周围材料中存在沿晶腐蚀和点蚀现象,材料中存在的夹杂物是形成破损通道的主要原因,环境腐蚀和管壁偏薄加速了波纹管破损泄漏的发生。For the early failure of strainless - steel ripple pipe in condenser the component, microstructure and corrosion surface are researched by optical microscope, scan electronic microscope and spectrometer in this paper. The results show that the ripple pipe is a point leak perforating on pipe wall. There is point corrosion and crystal -boundary corrosion phenomena around the leaked channel. The leaking channel on pipe wall is mainly caused by impurity in strainless steel. The thin pipe wall and environment corrosion quickened up the point leak of ripple pipe.

关 键 词：波纹管 腐蚀失效 显微组织 

分 类 号：TG172[金属学及工艺—金属表面处理]