硬度的检验和控制对Cr5Mo工艺管线安全运行的意义  

Significonce of Hardness Inspecting and Controlling of Cr5Mo Conduct Pipeline to the Safety of Operation

作　　者：雷月葆[1] 忻云彪 李培宁[1] 葛修鑫 张金权 

机构地区：[1]华东化工学院 [2]高桥石化公司炼油厂

出　　处：《压力容器》1992年第4期14-18,共5页Pressure Vessel Technology

摘　　要：Cr5Mo管线的9个失效案例分析表明其失效原因是过高的硬度对脆性断裂及应力腐蚀开裂十分敏感。并由于9个失效案例都发生在360℃以下服役的管道上,表明管道上原有的高硬度马氏体组织在较低温度下不易加火软化。The analysis of 9 failure cases of Cr5Mo pipeline shows that the hardness of the material at the position where failures occured is very high in all the failure cases. The reason of failures is that high hardness is sensitive to the brittle fracture and stress-corrosion cracking. Moreover, the failure of all 9 failure cases took place in the pipeline in service at temperature of 360℃ or lower, because the original martensite in hardened material can not be tempered completely at the lower temperature operation condition.

关 键 词：硬度 失效分析 Cr5Mo钢管 压力容器 

分 类 号：TG40[金属学及工艺—焊接]