西气东输二线用RMD根焊技术  

RMD root welding technology of West-East Gas Transmission Pipeline ProjectⅡ

作　　者：靳海成[1] 王俊红[1] 李广民[1] 黄志辉[1] 

机构地区：[1]中国石油天然气管道科学研究院,河北廊坊065001

出　　处：《电焊机》2009年第5期87-89,共3页Electric Welding Machine

基　　金：国家科技支撑资助项目(2008BAB30B02;2008BAB30B04);中国石油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-HT-XEX-03-(2008)-0136;69900-HT-XEX-03-(2008)-0138

摘　　要：介绍了RMD设备的特点、根焊技术的参数调节、应用参数、易出气孔的原因、焊接工艺和根焊接头分析等。RMD作为一种精确控制下的短路过度技术,能通过检测短路电流发生时间及时改变焊接电流和电压,是一种动态控制技术,可以精确控制熔池。结果表明,该设备操作简便、焊接速度快、根部成形好,对焊接飞溅、热影响区以及平稳过渡的优化都明显强于传统的根焊,在管道全位置焊接中具有较好的应用前景。lntroducs the RMD equipment, the reeommendation parameters,the reason analysis of porosity,welding Procedure and the root welding joint experimental analysis.RMD as the short circuit technology with accuracy control,have the time excessively through the examination short-circuit current to change the welding current and voltage, which is one kind of dynamic control technology, may accuractly control mohen pool.The result indicated that,this equipment operation is easy,the welding speed is quick,the root visual examination is good,Wehting Spatter,the heat-affected zone and the steady transition optimization all obvious good in the traditional root welding, has the large application prospect in the pipeline entire position welding.

关 键 词：RMD 西气东输二线 焊接技术 

分 类 号：TG43[金属学及工艺—焊接] TE832[石油与天然气工程—油气储运工程]