摘要
某650 m^3氮气球罐在全面检验期间,在上极纵缝内表面发现横向裂纹。球罐本体材料为07MnCrMoVR,属高强度调质钢,具有再热裂纹敏感性。根据现场调查及以往经验,制定了返修方案,对该球罐裂纹进行了科学合理的修复,并经无损检测确认合格后投入运行。
The inspection was performed on the 650 m3 nitrogen spherical tank and one horizontal crack was detected on internal surface of upper polar vertical weld. The spherical tank used 07MnCrMoVR as the base metal, which is high strength hardened and tempered steel. This steel has reheat cracking susceptibility. According to inspection spot survey and project experiences, repairing plan was formed, and then the repairing was conducted. The spherical tank passed the pressure and the non-destructive test, then it was put into use.
出处
《化工装备技术》
CAS
2016年第5期52-54,共3页
Chemical Equipment Technology
基金
上海市质量技术监督局系统项目No.2014-50
