The main cause to lead the cover leakage was erosion by alkali elements and Cl,S,O strong corrosion elements which are with high concentration con...

• 结果表明,汽包中水质含有较高浓度的碱性元素和氯、硫、氧等强腐蚀性元素,又在焊接残余应力的作用下发生应力腐蚀开裂,最后导致汽包封头产生泄漏。