【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。更多还原

【Abstract】 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.更多还原