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Double-wire middle value pulse MIG welding power system and control method thereof

A power supply system and power supply technology, which is applied in the direction of manufacturing tools, welding equipment, arc welding equipment, etc., to achieve the effect of reducing influence, speeding up speed and optimizing heat input

Active Publication Date: 2020-05-29
广州东昇机械有限公司
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0006] In order to overcome the shortcomings of existing welding power supply systems, the present invention provides a dual-wire median pulse MIG welding power supply system and its control method

Method used

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  • Double-wire middle value pulse MIG welding power system and control method thereof
  • Double-wire middle value pulse MIG welding power system and control method thereof
  • Double-wire middle value pulse MIG welding power system and control method thereof

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Embodiment

[0056] Such as figure 1 As shown, a dual-wire median pulse MIG welding power system includes a three-phase AC input power grid, a master power supply, a slave power supply, a man-machine interface and an arc load;

[0057] One end of the master power supply is connected to the three-phase AC input grid, and the other end is connected to the arc load; one end of the slave power supply is connected to the three-phase AC input grid, and the other end is connected to the arc load;

[0058] The host power supply and the slave power supply have the same structure, and both include a main circuit, a high-frequency drive module, a DSP control module, a fault protection module, and a voltage and current detection module;

[0059] The main circuit includes an input rectifying and filtering module, an inverter module, a step-down transformer module, and an output rectifying and filtering module connected in sequence; Hard switching or LLC resonant soft switching can be selected as the m...

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Abstract

The invention discloses a double-wire middle value pulse MIG welding power system and a control method thereof. The double-wire middle value pulse MIG welding power system comprises a three-phase alternating current input power grid, a main machine power source, a slave machine power source, a man-machine interface and an arc load. A middle value pulse comprises a front middle value mode, a mediummiddle value mode, a rear middle value mode and a front, rear and middle value mixed mode. A base value stage mainly achieves a pilot arc effect, a middle value stage is used for melting a welding wire to form molten drops, peak stage currents are increased, melting of the welding wire is accelerated so that molten drops can be formed, electromagnetic force is increased, and the molten drops disengage from the welding wire at the final moment of the peak stage to enter a molten pool. By means of the system, the middle value pulse is used for accurately controlling the molten drop transition process, and the control precision is high; and due to different phase matching, a heat input process is controlled, welding deformation is reduced, the system adapts to welding of different materials,meanwhile, the three-stage pulse is used for conducting stirring on the molten pool, and the grain structure is refined.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a twin-wire median pulse MIG welding power supply system and a control method thereof. Background technique [0002] The traditional welding technology uses single wire welding, which has low deposition efficiency and long production cycle. There is an urgent need for a welding technology with higher efficiency and higher joint quality. Twin-wire pulsed MIG welding is one of the innovative methods of high-efficiency welding technology. It is developed on the basis of single-wire welding. It consists of two sets of single-wire welding systems. Compared with MIG welding, it not only improves the total heat input and welding speed, but also changes the heat distribution in the welding process and improves the welding quality of the weldment, so as to achieve high efficiency and high quality welding. At present, the twin-wire pulsed MIG welding technology is widely used in various ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/10B23K9/173B23K9/095
CPCB23K9/095B23K9/1043B23K9/173
Inventor 吴开源詹家通曹宜伟谢沛民丁念
Owner 广州东昇机械有限公司
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