非调质钢N80 Φ139.7 mm×9.17 mm石油套管的研制  

Research and Prodution on Non-Queched-Tempered Steel N80 Φ139.7 mm×9.17 mm Oil Casing Tube

作　　者：胡楚江 邓叙燕 潘恩宝 程凯 Hu Chujiang;Deng Xuyan;Pan E nbao;Cheng Kai(R&D center Dalipal OCTG Co Ltd,Cangzhou 061000;Hebei Provience OCTG Engineering Tecnology Research Center,Cangzhou 061000)

机构地区：[1]达力普石油专用管有限公司技术中心,沧州061000 [2]河北省石油专用管技术创新中心,沧州061000

出　　处：《特殊钢》2020年第4期19-21,共3页Special Steel

摘　　要：根据C、Mn、V、N、Ti在微合金化非调质钢中作用,设计了石油套管用非调质N80钢的化学成分;依据实验室炉正火实验数据确定在线正火轧制工艺参数,研制的139.7 mm×9.17 mm非调质N80钢石油套管的组织为铁素体+珠光体组织,屈服强度575~638 MPa,抗拉强度789~840 MPa,伸长率21%~23%,0℃3/4尺寸冲击功39~87 J,完全满足API Spec 5CT《油套管规范》(第十版,2018)标准的要求。According to the effect of C,Mn,V,N and Ti in non-quenched-tempered microalloyed steel,the chemical composition of non-quenched-tempered steel N80 oil casing tube is designed.Based on lab furnace normalizing test data,the on-line normalizing rolling process parameters are determined.The microstructure of the non-quenched and tempered N80 steel 139.7 mm ×9.17 mm oil casing tube is ferrite+pearlite with the yield strength 575~638 MPa,tensile strength789 ~840 MPa,elongation 21%~23% and 3/4 size impact energy at 0 ℃ being 39 ~87 J fully to meet the requirements of API Spec 5 CT(10 th Edition,2018).

关 键 词：非调质钢N80 在线正火 石油套管 

分 类 号：TE931.2[石油与天然气工程—石油机械设备]