Double arc hybrid welding power supply device

Abstract

The invention discloses a double arc hybrid welding power supply device, in which the power supply outputs current from different output terminals through the alternate conduction of a power switching device in a current switching circuit, thus ensuring that a welding arc burns among different electrodes; the switched current ratio is inversely proportional to the turn number ratio through replacing the turn number ratio of a double pack inductance in the current switching circuit; and the turn-on and turn-off in turns of two power switch tubes are fitted through the magnetic coupling effect of the double pack inductance, thus realizing a high-speed switching of the current output circuit, and a non-consumable electrode arc can switch between a tungsten electrode and a welding wire as well as between the tungsten electrode and a base metal in a high speed. Compared with the traditional double-consumable electrode welding wire arc welding process, the device disclosed by the invention can reduce the lowest critical value of the welding heat input; and compared with the simple hybrid welding of non-consumable electrode and consumable electrode, as the time switching radio of non-consumable electrode can be adjusted freely, the distribution radio of the non-consumable electrode energy, between the consumable electrode welding wire and the base metal, can be adjusted freely, thus improving the adaptation range of the welding process.

Description

technical field [0001] The invention belongs to a kind of electric arc hybrid welding equipment, which can achieve higher welding speed compared with the conventional single-wire welding system, and has smaller heat input compared with the traditional double-wire or multi-wire welding system, and can be applied to the welding of thin plates welding. In this welding process, the melting electrode arc is used as the main arc, and the non-melting electrode arc is used as the auxiliary arc. The auxiliary arc is alternately conducted between the tungsten electrode and the base metal and between the tungsten electrode and the welding wire. It can not only adjust the distribution mode of welding heat input, but also increase the amount of deposited metal, thereby effectively improving welding efficiency. The technology belongs to the technical field of thermal processing. technical background [0002] The conventional arc welding process can be divided into melting electrode arc ...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to reduce the minimum operating current and minimum welding heat input by providing a double-arc compound welding power supply device, so as to apply to the high-speed welding process problems of ultra-thin plates that cannot be solved by conventional twin-wire welding

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