摘要
介绍了某厂液化气球罐内壁腐蚀情况,通过分析是因为球罐内壁存在应力腐蚀(SSCC)环境,造成球罐内壁焊道的热影响区出现裂纹,影响球罐的安全使用。阐述采用稀土合金(Zare)涂层可以解决球罐内壁应力腐蚀的问题,并说明了球罐内壁防腐涂装的工艺技术条件。
This paper introduced corrosion of inner wall of LPG spherical tank of a plant,with analysis shows,there is stress corrosion(SSCC) environment on spherical tank inner wall,which causes occurrence of cracks in the heat affected zone of welding bead of the spherical tank inner wall and affects safe application of the tank.The application of rare earth alloy(Zare) coating can solve the SSCC corrosion problem.The paper mainly addressed the construction process,requirements and procedure of the anti-corrosion coating for spherical tank inner wall.
出处
《炼油与化工》
2011年第2期10-13,56-57,共4页
Refining And Chemical Industry
关键词
球罐
防腐
SSCC
稀土合金层
spherical tank
anti-corrosion
SSCC
rare earth alloy coat
