经济型抗CO_2腐蚀油井管热处理工艺研究  

Study on Heat Treatment Process of Economical Anti CO_2 Corrosion Oil Well Tube

作　　者：石晓霞[1] 张行刚[1] 郭志文[2] Shi Xiao-xia;Zhang Xing-gang;Guo Zhi-wen(Technical Center of Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China;Steel Tube Co.of Inner Mongolia Baotou Steel Union Co.,Ltd.,Baotou 014010,Inner Mongolia Autonomous Region,China)

机构地区：[1]内蒙古包钢钢联股份有限公司技术中心,内蒙古包头014010 [2]内蒙古包钢钢联股份有限公司钢管公司,内蒙古包头014010

出　　处：《包钢科技》2018年第3期43-46,共4页Science & Technology of Baotou Steel

摘　　要：文章通过经济性抗CO_2腐蚀油井管用钢15Cr3MoVTi钢种CCT曲线测定得出,实验钢Ac1为659℃,Ac3为834℃。在此基础上设计了四种热处理工艺,热处理后的力学性能检验显示,回火温度升高60℃,屈服强度降低约130 MPa,抗拉强度降低约150 MPa,延伸率有所改善,但变化不明显,冲击韧性随着回火温度的增加取得显著效果,相较于580℃回火,640℃回火冲击韧性提高1.4倍。In the paper,it is introduced the Ac1 of test steel was 659 ℃ and Ac3 of test steel was 834 ℃,which were determined with CCT curve of 15 Cr3 Mo VTi steel for economical anti CO_2 corrosion oil well tube. Four heat treatment processes are designed based on them. The inspection of mechanical properties after heat treatment showed that the tempering temperature was increased by 60 ℃,the yield strength was decreased by about 130 MPa,the tensile strength was decreased by about 150 MPa and the elongation was improved,but it was not obvious. The impact toughness was significantly improved with the increase of tempering temperature. The impact toughness with tempering of 640 ℃ was 1. 4 times higher than that with tempering of 580 ℃.

关 键 词：15Cr3MoVTi 淬火 CCT 

分 类 号：TG156[金属学及工艺—热处理]