HFW焊管热张力减径后的组织与性能  

Microstructure and Properties of HFW Pipe After Hot Stretch Reducing

作　　者：毕宗岳[1,2] 赵晶 

机构地区：[1]国家石油天然气管材工程技术研究中心,陕西宝鸡721008 [2]宝鸡石油钢管有限责任公司钢管研究院,陕西宝鸡721008 [3]中国石油装备制造分公司,北京100027

出　　处：《焊管》2013年第10期5-10,共6页Welded Pipe and Tube

摘　　要：采用Gleeble1500热模拟试验及HFW焊管热张力减径试验,研究了热轧制/热张力减径+调质处理对C-Mn钢HFW焊缝显微组织和力学性能的影响,并采用恒电位阳极极化加速腐蚀试验方法研究了热张力减径+调质处理对C-Mn钢焊缝区沟槽腐蚀敏感性的影响。结果表明,HFW焊管经热张力减径+热处理后,焊缝区的组织和晶粒状态同母材一致,且焊缝区的力学性能和抗沟槽腐蚀性能得到显著改善,与母材基本相同,达到了焊缝优化或焊管工程无缝化的目的。The effect of hot rolling/stretch reducing＋quenching and tempering on microstructure and mechanical properties of the C-Mn steel weld was investigated by Gleeble 1500 thermal simulation test and HFW pipe hot stretch reducing test,and the accelerated corrosion method using constant potential anodic polarization was adopted to study the influence on grooving corrosion（GC） sensitivity of C-Mn steel weld of hot stretch reducing＋quenching and tempering. The result showed that the micro- structure and the grain state of the weld are the same as those of base metal after HFW pipe hot stretch reducing and hot treatment, moreover,the mechanical properties and the grooving corrosion resistance are improved to the lever of base metal basically and achieve the weld optimization or the seamless goal of welded pipe.

关 键 词：HFW焊管 焊接 热张力减径 焊缝 组织性能 

分 类 号：TE335.75[石油与天然气工程—油气田开发工程]