埋弧焊焊丝MK65HGX—m的开发和应用.PDF

埋弧焊焊丝MK65HGX—m的开发和应用 刘世泽·，董春明-，鲁科明2，曹炳亮- (1．番禺珠江钢管有限公司，广东广州51 1450；2．湖北猴王焊接材料有限公司，湖北仙桃433000) 摘要：介绍了用于焊接深海天然气输送用直缝埋弧焊管的焊丝MK65HGX—HI的开发背景及研制过程。采用 该焊丝和优化的H08DG焊丝与高碱度烧结焊剂SJl02G匹配焊接11．525万tX65钢级厚壁管线管，其低温韧性、 断裂韧性和焊接接头的横向拉伸性能均符合标准要求，且性能稳定，富余量较大。实际生产证明：MK65HGX一Ⅲ 焊丝是一种高性能的新型埋弧焊焊丝，所焊接的钢管焊缝具有高强度、高韧性和高塑性，适用于大线能量(约65 kJ／cm)的焊接，可推广应用到更高钢级(x80)和抗H，s腐蚀要求的焊管焊接。 关键词：深海管线管；埋弧焊接；焊丝；成分设计；低温韧性；CTOD；焊接工艺评定 中图分类号：TG422．3文献标志码：B 文章编号：1001—2311(2013)02—0042—06 R＆D and ofMK65HGX—nl Application WeldWireforSAWProcess ing LIU Shizel，DONG Chunmin91，LUKemin92，CAOBinglian91 Steel 511450，China； (1．PanyuChukong PipeCo．，Ltd．，Guangzhou 2．Hubei Material MonkeyKingWelding Co．，Ltd．，Xiantao433000，China) Abstract：Elaboratedinthe arethe andtheR＆DactivitiesoftheMK65HGX- paper developmentbackground wirefor oftheSAWLfor ocean service．115．250tonsofX65 Ⅲwelding making pipe deep pipeline heavy—wall havebeenmadethe thesaid wireandthe H08DG linepipes by weldingprocess employingwelding optimizedwelding wire withthe 102G SJ sintered arein with standard together high-basicityagent．The linepipescomplianceapplicable intermsoflow andweld transversaltensile alsohave temperaturetoughness，rupturetoughness joint strength，and stable rather allowance．Relev