The invention provides a double wire indirect electric arc welding technology with by-pass coupling enhancement. In view of the defects of the double wire indirect arc welding, the bypass coupling is applied to the invention, which can effectively increase the melting depth of the double wire indirect arc welding. In the welding process, the two wires are connected to the positive and negative poles of the power supply respectively, and they are both melting poles. The current is called the main circuit by the current of the double wire, and the workpiece is also connected to the negative electrode of the welding power. During the welding process, two arc is produced by the wire connecting the cathode electrode to the welding wire and the workpiece connected to the negative electrode, in which the current between the cathode wire and the workpiece is used to ensure the melting of the material and the formation of the molten pool. The other part of the current is used to melt the double wire through the negative electrode wire, which can improve the melting efficiency and control the heat input of the parent material. . The current distribution ratio between the negative electrode and the workpiece can be adjusted by adjusting the wire feeding speed when the total current is constant.
【技术实现步骤摘要】
一种旁路耦合增强的双丝间接电弧焊技术
本专利技术属于电弧焊领域,特别涉及一种旁路耦合增强的双丝间接电弧焊技术。
技术介绍
电弧焊是目前焊接工艺中应用最广泛的焊接工艺方法,它是利用发生在电极与焊件之间电弧放电时产生的热量来加热、熔化焊条(焊丝)和母材,使之形成焊接接头。电弧是电弧焊接的热源。传统的电弧焊是工件和焊条(焊丝)分别接焊接电源的正负极,电弧在焊条(焊丝)和工件之间产生,电弧产生的有效热量部分用于熔化焊接材料,另一部分用来熔化工件,形成焊接熔池和焊缝。传统电弧焊用于熔化母材和焊条(焊丝)的能量(电能)大约各占了一半,随着焊接电流的增加,用于焊条(焊丝)和母材熔化的热量基本是同步增加的。但实际上很多时候母材不需要这么大的热输入,过大的热输入导致焊接接头性能降低(焊接热影响区扩大引起的软化和脆化等),产生较大的焊接变形及残余应力等质量问题,使目前应用的各种电弧焊方法熔敷系数大幅度的提高受到了极大的限制,传统电弧焊在平衡焊接效率与母材热输入方面遇到很大的挑战。如何合理分配电弧热对母材及焊丝的输入成为近年来电弧焊发展的重要方向。双丝间接电弧气体保护焊(以下简称双丝间 ...
【技术保护点】
一种旁路耦合增强的双丝间接电弧焊方法,其特征在于,焊接时,两焊丝分别与电源的正负极相接,并均为熔化极;工件与电源负极相连;焊丝与工件共用一个焊接电源。
【技术特征摘要】
1.一种旁路耦合增强的双丝间接电弧焊方法,其特征在于,焊接时,两焊丝分别与电源的正负极相接,并均为熔化极;工件与电源负极相连;焊丝与工件共用一个焊接电源。2.如权利要求1所述的方法,其特征在于,在总电流一定的情况下通过调整送丝速度来调整负极焊丝和工件之间的电流分配。3.如权利要求1所述的方法,其特征在于,正极焊丝与工件之间的电流,用于保证母材熔化并形成熔池。4.如权利要求1所述的方法,其特征在于,正极焊丝与负极焊丝之间的电流,用于熔化双丝,提高熔化效率、控制母材热输入。5.如权利要求1所述的方法,其特征在于,两个焊丝各自有...
【专利技术属性】
技术研发人员:邹勇,张志豪,邹增大,吴东亭,
申请(专利权)人:山东大学,
类型:发明
国别省市:山东,37
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