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A double-arc tig welding power supply device

A welding power source and circuit technology, applied in welding equipment, arc welding equipment, manufacturing tools, etc., to achieve the effect of improving the adaptability

Active Publication Date: 2017-12-08
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a double-arc composite welding process to achieve the purpose of highly concentrated heat in the weld area and high-speed welding, so as to apply to the high-speed welding process of thin plates that cannot be solved by conventional double-arc welding

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  • A double-arc tig welding power supply device
  • A double-arc tig welding power supply device
  • A double-arc tig welding power supply device

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Embodiment Construction

[0024] Below in conjunction with accompanying drawing description and specific embodiment, the present invention is described in further detail:

[0025] The system consists of two alternate non-melting extremely high current pulsed arcs as the main arc, and two non-melting constant current small current arcs as auxiliary arcs. The main arc can be alternately conducted between the base material and the two tungsten electrodes. , when the auxiliary arc exists between the tungsten electrode and the base metal, the arc can be started and the arc can be continued. When the main arc exists between the tungsten electrode and the base metal, the deposition speed can be increased and high-speed welding can be realized. Since the tungsten arc can work stably at a very low current, this process can reduce the minimum operating current and heat input compared with double melting electrode welding, so it can be applied to ultra-thin plates that cannot be solved by conventional twin-wire w...

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Abstract

The invention discloses a double-arc hybrid welding power supply device, and belongs to the technical field of hot working. The device comprises a first constant current output circuit, a second constant current output circuit, a third constant current output circuit and a buffering network, and further comprises a current switching circuit. Through alternate connection of power switch devices in the current switching circuit, a power supply outputs current from different output terminal, and a welding arc burns between different electrodes; through connection and disconnection of three power switch tubes by turns, and under the action of an RCD buffering network, high-speed switching of a current output circuit is realized, and an electric arc between a first electric arc and a mother board and an electric arc between a second electric arc and the mother board can be switch at high speed. Compared with the conventional double consumable electrode welding wire electric arc welding technology, the device can reduce the lowest critical value of weld heat input. Compared with single arc, double arcs enable the energy distribution manner to be adjusted. Compared with DC, double-arc TIG can enable the electric arc straightness to be improved under the same weld heat input.

Description

technical field [0001] The invention belongs to a double-arc TIG welding power supply device, which can achieve higher welding speed compared with the conventional single-wire welding system, and has smaller heat input than the traditional double-wire or multi-wire welding system, and the base metal The heated area is more concentrated, which can be applied to the welding of thin plates. This welding process uses a non-melting electrode arc, and two arcs are alternately conducted between two different tungsten electrodes and the base metal. 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. Background technique [0002] The conventional arc welding process can be divided into melting electrode arc welding process and non-melting electrode arc welding process. In TIG welding, the inert gas h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/06B23K9/167
CPCB23K9/06B23K9/1675
Inventor 黄鹏飞卢振洋丁斌
Owner BEIJING UNIV OF TECH
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