1Cr5Mo无缝钢管的热处理工艺研究  

Study on Heat Treatment Process for 1Cr5Mo Seamless Steel Pipe

作　　者：何彪[1] 赵庆权[1] 肖功业[1] 王国亮[1] 曹金荣[1] 张俊萍[1] 

机构地区：[1]天津钢管集团股份有限公司,天津300301

出　　处：《钢管》2013年第6期20-23,共4页Steel Pipe

摘　　要：1Cr5Mo无缝钢管主要为石油炼化装置用管,GB 9948—2006《石油裂化用无缝钢管》中对该钢种的热处理工艺要求为退火。通过系列热处理工艺研究发现:1Cr5Mo无缝钢管经正火工艺后,再进行780℃、保温不少于60 min的回火,可以得到充分的回火索氏体组织,具有优良的综合性能,抗拉强度和硬度也能够满足标准要求。采用正火+回火的热处理工艺,1Cr5Mo无缝钢管完全可以达到标准要求的退火后的性能指标。The 1Cr5Mo seamless steel pipe is mainly used for the petroleum cracking facility. According to Chinese National Standard GB 9948-2006 Seamless Steel Pipes for Petroleum Cracking Service, annealing process is required for heat treatment of such steel. Based on the result from relevant serial heat treatment process research, it is identified that adequate tempered sorbite structure can be obtained for the 1Cr5Mo seamless steel pipe by means of first undergoing normalization, and then tempering at 780 ~C and with a soaking time at least 60 rain, which ensures the pipe to possess excellent comprehensive performances, and tensile strength and hardness both up to applicable specification. It is concluded that thanks to normalizing ＋ tempering heat treatment process, all the after- annealing performance index as specified in applicable specification for the above mentioned pipe can be fully satisfied.

关 键 词：1Cr5Mo钢 热处理工艺 退火 正火+回火 强度 硬度 组织性能 

分 类 号：TG162.84[金属学及工艺—热处理]