Robot double-wire four-pulse novel welding method

Abstract

The invention discloses a robot double-wire four-pulse novel welding method. The robot double-wire four-pulse novel welding method comprises a control part, a wire feeding part, two pulse welding power sources which communicate with each other and a welding gun. The method comprises the following steps that the wire feeding part is used for arranging two welding wires at the welding position in afront-and-back mode at a certain angle; the control part controls the two pulse welding power sources, so that the current provided by a frontward wire is larger than the current provided by a backward wire; and the control part further controls the wire feeding part to provide the same or different wire feeding speeds of the frontward wire and the backward wire, and the pulse welding power sources are controlled to use four independent pulses to provide welding current to the welding wires. The method is wide in control range, attractive in welding effect and high in quality.

Description

technical field [0001] The invention relates to the technical field of twin-wire welding, in particular to a novel welding method for a robot with twin-wire and four pulses. Background technique [0002] Conventional techniques include a twin-wire welding method in which an arc is generated between a melting electrode (hereinafter referred to as a welding wire) and a base material to form a molten pool, and a filler wire is inserted into the molten pool for welding. In this twin wire welding method, since the molten metal of the filler wire is applied to the molten metal of the welding wire, the amount of molten metal is increased, so that high deposition and high-speed welding can be performed. In particular, when performing high-speed welding by the twin-wire welding method, it is important to feed the filler wire so as to short-circuit the molten pool after melting the electrode arc in order to prevent a humping bead. This is because, if the filler wire is fed into the m...

AI Technical Summary

Problems solved by technology

In the synchronous mode, the two arcs reach the maximum value at the same time, which is conducive to forming a larger penetration depth, but the spatter is larger, which is rarely used; in the alternate mode, the interaction force of the arcs is only a quarter or even lower than that of ordinary welding. , has little effect on droplet transfer, especially suitable for light metal welding, and can significantly reduce welding spatter; random mode can not only significantly reduce the force of the arc, reduce spatter, but also achieve greater penetration, welding steel, etc. Faster welding speeds can be obtained with heavier metals, but the welding process is not as stable as the alternating mode since the two pulse signals occur randomly

Images