双面双弧焊对高强钢焊接效率和质量影响分析  

Analysis on the Effect of Double-Sided Arc Welding on Welding Efficiency and Quality of High-strength Steel

作　　者：李绿叶 吴松林[1] LI Lüye;WU Songlin(Luoyang Ship Material Research Institute,Luoyang 471023 ,China)

机构地区：[1]中国船舶重工集团公司第七二五研究所

出　　处：《材料开发与应用》2019年第3期59-62,共4页Development and Application of Materials

摘　　要：对高强钢10CrNi3MoV钢厚板进行了双面双弧焊接试验研究。结果表明,焊接长2 m、厚50 mm的钢板,双面双弧焊与传统单弧MAG焊相比,生产效率提高1.4倍,焊接接头力学性能满足指标要求;双面双TIG打底的热影响区金相组织为板条状马氏体,焊缝区为板条马氏体+针状铁素体。The 2 m long and 50 mm thick plate was welded by the double-sided arc welding process. The welding productivity of the thick plate by double-sided arc welding process was 1. 4 times more than that of the troditional single MAG arc welding, and the mechanical properties of welded joint could meet the requirements. The metallurgical structures in the HAZ by double-sided TIG arc backing welding were the lath martensite, and those in the welding seam were composed of the acicular ferrite and the lath martensite.

关 键 词：双面双弧焊接 高强钢 板条马氏体 针状体素体 

分 类 号：TG146[一般工业技术—材料科学与工程]