油气输送用双金属复合管的生产工艺分析及质量控制

Production Process Analysis and Quality Control of Bimetal Clad Steel Pipe Used for Oil and Gas Transportation

为了得到力学性能和抗腐蚀性能均符合油气输送用双金属复合管的制造工艺,介绍了双金属复合管的结构特点、性能特点及生产工艺,总结了其经济及技术优势,分析了双金属复合管生产过程的质量控制要点。指出,油气输送用双金属复合管基层一般采用碳钢及合金钢等,内层采用不锈钢及镍基合金等,通过冶金复合板焊接成型;利用"两步法"生产螺旋焊管或UOE和JCOE生产直缝钢管,不仅可以生产大直径双金属复合管,而且可较大地提高生产效率,避免机械复合的缺点。同时,还提出了未来双金属复合管需要改进的一些方面。

In order to get the manufacturing process of bimetal clad pipe which mechanical properties and corrosion resistance are in conformity with the oil and gas transportation, in this article, it firstly introduced the structure characteris-tics, performance characteristics and manufacturing process, summarized the economic and technical advantages, then analyzed the quality control key points in production process. It pointed that the base layer of bimetal clad steel pipe is usually carbon steel, alloy steel, the inner lining is stainless steel, nickel base alloy, etc. Adopting metallurgy composite plate welding forming. Using two-step method to produce SAWH pipe, UOE and JCOE to manufacture SAWL pipe, it not only can produce large diameter bimetal clad pipe, but also significantly improve the production efficiency, avoid the shortcomings of mechanical composite. At the same time, it put forward the aspects in need of improvement in future.