一、概述随着我国石化工业的发展,研究发生在大型贮存球罐上的应力腐蚀问题显得越发重要。球罐的应力腐蚀除了球罐本身的先天条件不足外,(如焊缝较多,现场组焊,焊缝的冷却速度不易控制,残余应力较大等)也有使用中存在的问题。而在球罐的设计中对应力腐蚀问题 I. Overview With the development of China’s petrochemical industry, research on stress corrosion problems occurring in large storage spherical tanks is becoming more and more important. Spherical tank stress corrosion in addition to the inherent shortage of the tank itself, (such as more welds, field welding, weld cooling speed is not easy to control, large residual stress, etc.) are also used in the existing problems. In the design of the tank on the issue of stress corrosion