Hot wire welding device

Abstract

The invention provides a hot wire welding device and belongs to the field of hot processing. A welding main arc is provided by a GMAW power supply, a parent material is connected with the negative electrode of the GMAW power supply, a welding gun is connected with the positive electrode of the GMAW power supply, and the parent material, the GMAW power supply and the welding gun form a current loop A; the current, voltage and dry elongation of the GMAW power supply can be freely adjusted according to experiment requirements, and the fusion depth and weld width of a weld pool can also be adjusted along with the current, the voltage and the dry elongation. Through alternate conduction of a power switch device in a hot wire current secondary inversion switching circuit, the power supply outputs low-frequency alternating current from a current output terminal, so that the current direction of a hot wire is switched back and forth, the hot wire effect on a welding wire is achieved through the switching, the welding efficiency is improved, and control over the swing of the main arc in the middle can also be achieved. A swing electric arc can also adjust the heat distribution of the electric arc, a heat affected zone can be adjusted, and the purpose that certain special alloy materials in the welding wire are not be damaged by electric arc overburning can be achieved. According to the device, energy input of the welding wire is reduced, and meanwhile, the swing electric arc plays an important role in improving the quality of the welding wire, so that the application range of the welding technology is improved.

Description

technical field [0001] The invention discloses a high-efficiency hot wire welding equipment, which is an arc-hot wire composite welding equipment and 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 the traditional hot wire TIG welding process, there are both single hot wire TIG welding method and double hot wire TIG welding method. The arc is stable, the weld performance is excellent, no spatter, and the deposition rate is controllable. However, whether it is a single hot wire TIG or double hot wire TIG welding method, the hot wire TIG welding has limited current-carrying capacity of its main arc, and the arc power is limited to a certain extent, so that the weld penetration is shallow; and the deposition rate is not enough Large, low efficiency and other problems are not conducive to the fusion...

AI Technical Summary

Problems solved by technology

The heat of the TIG main arc melting the welding wire is not as good as the GMAW welding method, and cannot be compared with the deposition rate of the dual hot wire GMAW welding method

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