双面双弧焊技术在转炉三点球面支撑轴耳焊接中的应用

Application of double-sided double arc welding technology in welding of three-point spherical support trunnion of converter

在模拟试验基础上,采用CO_(2)双面双弧气体保护焊进行了转炉三点球面支撑耳轴的焊接。对焊接接头进行了拉伸、弯曲及冲击试验,试验结果满足相关标准要求。介绍了转炉耳轴支撑厚板的焊接工艺流程。对比了单弧焊与双弧焊的焊接时间与焊接变形,采用双面双弧焊方法显著提高了焊接生产效率,并使焊接变形控制在0.5 mm的有效范围内。该焊接案例为双面双弧焊技术在冶金行业厚板焊接上应用提供了实践经验。

Based on the simulation test,the welding of three-point spherical support trunnion of converter was carried out by CO_(2) double-sided double-arc gas shielded welding.The tensile,bending and impact tests of welded joints were carried out,and the test results met the requirements of relevant standards.The welding process of thick plates in support trunnion of converter was introduced.The welding time and welding deformation between single arc welding and double arc welding were compared.The welding efficiency was significantly improved by double-sided double arc welding,and the welding deformation was controlled within the effective range of 0.5 mm.The welding case provided practical experience for the application of double-sided double arc welding technology in thick plate welding in metallurgical industry.