Arc behavior and deposition characteristics of assisted wire filling cable-type welding wire GMAW

Abstract

The assisted wire filling (AWF) cable-type welding wire (CWW) gas metal arc welding (GMAW) is an innovative welding process in which the wire of CWW GMAW is used as the electrode, and the assisted wire using the arc and molten pool melt. The electrode and assisted wire are with CWW, composed of seven wires, one in the center and others uniformly distributed around it. This paper compares the weld seam appearance, arc shape, arc behavior, electrical parameters, and deposition characteristics of the AWF CWW GMAW and CWW GMAW. The arc shape and electrical parameters of AWF CWW GMAW are similar to the CWW GMAW, in which the welding process was not disturbed by the assisted wire. The AWF CWW GMAW welding wire melting and metal deposition rates are higher than those for CWW GMAW with the same welding parameters. The regular changes of weld width, weld depth, and reinforcement that increased with the increase of welding current are the same as those of the welding seam from CWW GMAW. The AWF CWW GMAW weld depth decreased, and the reinforcement is increased compared with the CWW GMAW under the same current. The tension test of the AWF CWW GMAW button joint meets the requirements of CCS.