双细丝埋弧焊+陶瓷衬垫焊接工艺  

Welding process of twin fine thin wire submerged arc welding and ceramic backing

作　　者：吴强[1] 麻孟锴[1] 

机构地区：[1]广州广船国际股份有限公司,广东广州510382

出　　处：《电焊机》2008年第12期16-17,61,共3页Electric Welding Machine

摘　　要：双细丝埋弧焊+陶瓷衬垫可用于无间隙装配、坡口内定位焊、背面应用陶瓷衬垫+正面大能量输入的双细丝单面埋弧焊焊接,焊缝正反面一次成形。双细丝埋弧焊是利用单电源单送丝机送出两条具有一定距离的并联细丝,在保持大能量输入同时,把焊接电流进行分流,从而降低电弧能量过多集中于中坡口根部的问题。由于细焊丝干伸长度电阻热增加,焊丝熔化速度加快;电极之间电弧辐射热相互作用,能量利用率高,熔滴过渡更细,焊接过程更平稳,焊缝成形更美观;对于板厚12～18 mm,可大幅度提高焊接效率10倍以上,焊接质量稳定,应用前景良好。This method is using twin thin wire submerged arc welding and ceramic backing.The characteristic is close root gap, tack welding in the groove,using twin thin wire submerged arc welding technique which provides large heat input in face＇of weld,using ceramic backing in back of weld and one-side welding with back.The range of steel plate thickness is from 12 mm to 18 mm with this method.Compares to conventional welding,twin thin wire submerged arc welding have some advantages,such as the appearance of weld is fine,the efficiency is high and the allowed assembling gap deviation is greater and the quality is steady.twin thin wire submerged arc welding is an ideal technology for the welding of panel in shipyard.

关 键 词：双细丝埋孤焊 陶瓷衬垫 单面焊双面一次成形 

分 类 号：TG445[金属学及工艺—焊接]