内覆不锈钢双金属复合热煨弯管开发  

R&D of Internally-clad Bimetal Composite Stainless Steel Hot Bend

作　　者：赵志伟 吴亚军 白福良 郭立萍 高秋胜 ZHAO Zhiwei;WU Yajun;BAI Fuliang;GUO Liping;GAO Qiusheng(CNPC Bohai Equipment Manufacturing Co.,Ltd.·Julong Steel Pipe Co.,Ltd.,Qingxian 062658,China)

机构地区：[1]中国石油集团渤海石油装备制造有限公司·巨龙钢管有限公司,河北青县062658

出　　处：《钢管》2024年第5期47-50,共4页Steel Pipe

摘　　要：主要介绍碳钢不锈钢无缝双金属冶金复合热煨弯管研发过程,对该类型弯管的制造工艺、性能参数、测试项目及标准进行了研究,详细阐述了其关键制造技术。内容涵盖母管选型、整体研发方案制定及关键控制点分析、工艺参数设定及模拟试验、相关装备改进或升级、机械性能及耐蚀性能实验。最终研发的双金属复合弯管具备良好的机械性能、耐蚀性能并实现了产品高精度几何尺寸控制。该类型弯管碳钢层与不锈钢层之间达到冶金结合,剪切强度高于200 MPa。相对于堆焊弯管(将不锈钢层堆焊到碳钢上),该产品壁厚更均匀,制造效率高,制造尺寸限制小;相对于传统爆炸复合板焊管,可以避免锯齿状界面及直焊缝问题,兼顾安全性和经济性,可满足高腐蚀性介质油气输送管道的服役要求。Described here in the essay is the R&D process of the carbon steel-stainless steel seamless bimetal metallurgical composite hot bend,including details about the key manufacturing technology,property parameters,testing items and relevant standard.Also involved are the selection of the mother tube,preparation of the overall R&D plan,analysis of the critical control points,setting of the process parameters and the simulation testing,modification and upgrade of related equipment,and experiments concerning the mechanical properties and the corrosion resistance,etc.The bimetal composite bend as finally developed possesses good mechanical properties and corrosion resistance,and the hi-precession geometric dimensions of the product has been well controlled.The carbon steel layer and the stainless steel layer of the said type of bend have metallurgical bonding with a shear strength exceeding 200 MPa.In comparison with the built-up bend(i.e.overlaying the stainless steel layer on the carbon steel layer),this product has more uniform wall thickness,and the manufacturing process for such pipe features high efficiency,and small manufacturing size restrictions.Compared to the conventional explosive-clad weld composite pipe,the said hot bend can avoid problems such as serrated interface and straight welding seam,having the safety and the economy properly balanced,and met the service requirements for the high-corrosion oil and gas transportation pipeline.

关 键 词：热煨弯管 双金属冶金复合 316L 制造工艺 

分 类 号：TE832[石油与天然气工程—油气储运工程]