双丝埋弧焊焊接工艺参数对焊缝成形的影响

为了研究双丝埋弧焊这种高效焊接工艺对低合金高强钢焊接成形质量的影响,进行了双丝理弧焊对接试验.试验结果表明,电流、电压一定时,改变双丝排列方式从双丝串列、并列到错开方式,从接头成形和力学性能分析来看,只有双丝串列的双丝埋弧焊工艺适合低合金高强钢的时接焊接;为确保接头成形质量,双丝间距、焊接速度以及焊接电流、电压应控制在...

Study on parameters of twin-wire submerged arc welding process to impact the weld shape and quality

A detailed study of how twin-wire submerged arc welding process to impact the welding forming quality on low alloy high strength steel.The experimental results show that when welding current and voltage is certain,double-wire with a change from two-wire serial,parallel to the staggered approach,from analysis of forming and mechanical properties of welding joint,only dual-wire submerged arc welding process of the two-wire serial is adapt to butt welding for low-alloy high-strength steel;To ensure that the joints forming quality,double-wire spacing,welding speed and welding current,voltage should be controlled within reasonable range;General,when a high welding speed is used,distance between pairs of wire should be selected smaller,while when welding speed is in the middle,the two-wire spacing should be controlled at the range of 20～100 mm;at the same time,welding speed should be controlled at 60～100 cm/min.The results has a certain reference value to the study of the multi-wire welding process and the welding of other types steel.