服役的HK40炉管抗蠕变裂纹扩展能力  

Resistance of HK40 furnace tubes against creep crack growth

作　　者：巩建鸣[1] 涂善东[1] 凌祥[1] 陈嘉南[1] 徐平[2] 潘文越[2] 陈世陵[2] 

机构地区：[1]南京化工大学 [2]金陵石化公司炼油厂

出　　处：《石油化工设备》1999年第3期6-10,共5页Petro-Chemical Equipment

摘　　要：在全面分析已服役１０年的ＨＫ４０炉管损伤状况的基础上，研究了ＨＫ４０炉管母材和焊接接头的蠕变裂纹扩展速率，评价了这２种不同部位抗蠕变裂纹扩展的能力。结果表明在长期正常的运行中，特别是服役后期，下部炉管焊缝中的蠕变裂纹扩展比母材裂纹扩展快。On the basis of metallographical study of damage states of a HK40 tube which have serviced for ten years, creep crack growth tests on its base metal and weld are carried out, the resistance of the different parts against creep crack growth is studiedThe results show that creep crack growth of the weldments located in the lower part of the furnace tube is faster than that of the base metal after a long period of operation,especially in the later service period Microstructure damage and stress concentration in the weld are two important factors contributing to faster creep crack growth rates

关 键 词：炉管 焊缝 蠕变 裂纹扩展 制氢 转化炉 

分 类 号：TQ116.2[化学工程—无机化工] TQ054.07