深海管线用高钢级厚壁直缝埋弧焊管研制  

Research and Development of High Grade Heavy Wall Thickness Longitudinal Submerged Arc Welded Pipe Used for Deep-sea Pipeline

作　　者：牛爱军[1,2] 毕宗岳[1,2] 牛辉[1,2] 黄晓辉[1,2] 张阿昱[1,2] 

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

出　　处：《焊管》2015年第7期11-16,共6页Welded Pipe and Tube

基　　金：国家高技术研究发展计划(863)课题"深海高压油气输运高强厚壁管材关键技术研究"(编号:2013AA09A219)

摘　　要：对深海管线用钢管的研制背景及技术目标进行了详细阐述。通过采用低C高Mn-Nb-Ti合金化的成分设计和合理的TMCP工艺控制,开发出具有高强度、低屈强比和优异低温韧性良好匹配的X70级36.5 mm厚壁管线钢。采用JCOE制管工艺试制的X70级准914 mm×36.5 mm直缝埋弧焊管,其管体及焊接接头的拉伸性能、断裂韧性及硬度等指标全部满足DNV-OS-F101标准要求,主要性能指标达到了研制技术目标要求。In this article, it expatiated the development background and technical objectives of steel pipe used for deep-sea pipeline. By adopting the low C high Mn-Nb-Ti alloying composition design and reasonable TMCP process control, it developed high strength, low yield ratio and good match of low temperature toughness X70 pipeline steel with 36.5 mm thick wall thickness. The X70 准914 mm ×36.5 mm SAWL pipe were trialed by JCOE pipe manufacturing process. The tensile properties, fracture toughness and hardness etc. of the steel pipe and welded joints all meet the requirements of DNV-OS-F101 standard. The main performance indicators reach requirements of technical development.

关 键 词：焊管 深海管线 X70钢 厚壁 直缝埋弧焊管 力学性能 低温韧性 

分 类 号：TE973[石油与天然气工程—石油机械设备]