西气东输二线管道工程的焊接技术特点  

Welding technique features on the West-East pipeline project Ⅱ

作　　者：隋永莉[1] 薛振奎[1] 杜则裕[2] 

机构地区：[1]中国石油天然气管道局科学研究院管道焊接技术中心,河北廊坊065001 [2]天津大学材料科学与工程学院,天津300072

出　　处：《电焊机》2009年第5期18-21,共4页Electric Welding Machine

基　　金：国家"科技支撑"资助项目(2008BAB30B02);中国石天然气集团公司西气东输二线工程关键技术研究资助项目(69900-XT-XEX-03(2008)-0136)

摘　　要：西气东输二线工程干线管道采用X80钢管,其综合技术代表了目前世界管道建设的最高水平。分析总结了干线管道X80钢管焊接施工所面临的难点,并结合X80钢的焊接性介绍了工程采用的低氢型根焊方法、小填充量坡口型式、多样性的焊接工艺等焊接技术特点,还介绍了穿越地震断裂带的管道焊接施工要求和焊接工艺,以及冬季低温环境下高强管线钢焊接问题和焊接施工方案。该工程在一定程度和范围内检验了我国的钢铁工业水平和综合施工能力,同时也促进了管道焊接技术的发展,把我国的管道焊接技术推进到了一个新的阶段。The X80 alloy steel pipe is used in the mainline for West-East Pipeline Project Ⅱ ,its synthesis teehnology represented presents world pipe-line construction maximum level.This article analyzed the difficulty which the welding construction faced of the XSO alloy steel pipe,and unified the X80 alloy steel weldability to introduce welding technology characteristic of the low hydrogen root welded,small filling quantity bevel pattern,multiple welding craft.other welding technology;but also introduced welding process and construction requested of the earthquake facetarea and the welding questions and welding construction plan of high stress alloy steel pipeline under winter.This project examined our country＇s iron and steel industry fabrication level and synthesis construction ability;simultaneously its＇ has also provided a golden opportunity for the pipeline welding technology development,also advanced our country＇s pipeline wehting technology a new stage.

关 键 词：X80钢 西气东输二线 焊接技术 断裂带管道建设 低温焊接 

分 类 号：TG457.1[金属学及工艺—焊接]