单电双细丝埋弧焊焊接工艺试验研究  

TEST AND STUDY ON WELDING PROCEDURE OF THE TWIN-WIRE SUBMERGED ARC WELDING WITH SINGLE POWER SUPPLY

作　　者：刘菲[1] 韩小义 段斌[1] 胡文波[1] 李铁军[1] 李昭[1] 

机构地区：[1]中冶建筑研究总院有限公司,北京100088 [2]中铁山桥集团有限公司,河北秦皇岛066205

出　　处：《钢结构》2013年第10期16-18,30,共4页Steel Construction

基　　金：国家科技支撑计划(2012BAJ13B01)

摘　　要：通过单电双细丝与单电单粗丝埋弧焊工艺的对比试验研究,得出:与单电单粗丝埋弧焊工艺相比,单电双细丝埋弧焊的焊接熔敷速度更高。其原因是焊接电流与焊丝直径是影响熔敷速度的主要因素,在同等的焊接电流下,单电双细丝埋弧焊的焊丝直径较小,电流密度更大,因而焊接熔敷速度更高;与单电单粗丝埋弧焊工艺相比,由于单电双细丝埋弧焊可使用较高的焊接速度,因此在焊接电流、电压相同的条件下,单电双细丝埋弧焊可获得更低的焊接热输入和良好的焊接接头冲击韧性。By comparing tests on welding procedure of the twin-wire SAW with single power supply and the single wire SAW with single power supply, the follows are got： As compared with the single-wire SAW process with single power supply, the twin-wire SAW with single power supply has higher welding deposition rate. The reason is that the welding current and the wire diameter are the primary influence factors of deposition rate. Under the same welding current, the wire diameter of the twin-wire SAW with single power supply is finer, whose current density is greater, so the welding deposition rate is higher. Also as compared with the single-wire SAW process with single power supply, because the twin-wire SAW with single power supply has faster welding speed, the twin wire SAW with single power supply has lower welding heat input and gets good impact toughness of welding joint under the same welding current and volt.

关 键 词：单电双细丝埋弧焊 单电单粗丝埋弧焊 焊接熔敷速度 焊接热输入 

分 类 号：TG445[金属学及工艺—焊接]