摘要
采用焊接方法连接的碳钢碱液输送线在温度较高(50℃以上)的情况下使用时,存在着应力腐蚀,焊口经常发生开裂.因此,对腐蚀原因进行了分析.采用铁基形状记忆合金管接头连接管线后,经过1年多的使用,完全避免了应力腐蚀,大大提高了管线的使用寿命,其综合经济效益很好,是值得推广的好材料.
When the welded connection of carbon steel caustic piping was operated at higher temperature (over 50℃),it suffered stress corrosion and frequent weld seam cracking. After analysis of the corrosion causes,the Fe-based shape-memory alloy pipe fitting was adopted for the piping connection. The one-year operation showed that the stress corrosion was completely avoided and piping life greatly extended. It proved to be the cost-effective material for wide application.
出处
《石油化工腐蚀与防护》
CAS
1997年第4期21-23,共3页
Corrosion & Protection In Petrochemical Industry
关键词
输油管道
碱液输送线
铁基记忆合金管
接头
caustic pipeline,stress corrosion,analysis,memory alloy,application
