基于TMCP的油井管用30MnNbRE钢形变热处理工艺  

Deformation heat treatment technology of 30MnNbRE steel for oil well pipe based on TMCP

作　　者：汤雪娇 包喜荣[1] 王晓东 宋操 Tang Xuejiao;Bao Xirong;Wang Xiaodong;Song Cao(School of Materials Science and Engineering,Inner Mongolia University of Science and Technology,Baotou Inner Mongolia O01401)

机构地区：[1]内蒙古科技大学材料科学与工程学院,内蒙古包头014010

出　　处：《金属热处理》2024年第7期212-219,共8页Heat Treatment of Metals

基　　金：国家自然科学基金(52164064)。

摘　　要：采用Gleeble-3500热模拟试验机对油井管用30MnNbRE钢进行热压缩试验,研究了30MnNbRE钢的再结晶行为。基于PQF工艺,设计并模拟了30MnNbRE钢TMCP在线形变热处理工艺,并与传统离线热处理工艺的微观组织和力学性能进行对比分析。结果表明,油井管用30MnNbRE钢在实际穿孔过程中可采用动态再结晶型控制轧制,连轧可采用静态再结晶型控制轧制,定(减)径可采用未再结晶型控制轧制。相比传统离线热处理工艺,TMCP在线形变热处理生产的30MnNbRE钢的马氏体板条可细化至0.536μm,NbC尺寸约为88.9 nm,屈服强度提高至1169 MPa,冲击吸收能量提高至98.7 J。Recrystallization behavior of 30MnNbRE steel for oil well pipe was studied through hot compression test on Gleeble-3500 thermal simulation machine.Based on the PQF process,the TMCP on-line deformation heat treatment process of 30MnNbRE steel was designed and simulated,and the microstructure and mechanical properties were compared with the traditional off-line heat treatment process.The results show that dynamic recrystallization controlled rolling,static recrystallization controlled rolling and non-recrystallization controlled rolling can be used for actual perforation process,continuous rolling process and diameter-fixing process,respectively.Compared with the traditional off-line heat treatment process,the martensitic lath of the 30MnNbRE steel produced by TMCP on-line deformation heat treatment can be refined to 0.536μm,the NbC size is about 88.9 nm,the yield strength is increased to 1169 MPa,and the impact absorbed energy is increased to 98.7 J.

关 键 词：30MnNbRE钢 TMCP 形变热处理 再结晶 强韧化 

分 类 号：TG335.7[金属学及工艺—金属压力加工]