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Welding control method of diplonema MAG and welding source

A control method and technology of welding power source, applied in welding equipment, manufacturing tools, arc welding equipment, etc., can solve the problems of incompatibility, inability to achieve arbitrary phase adjustment, application limitations, etc., to increase flexibility and improve arc stability The effect of wide performance and welding specification

Inactive Publication Date: 2007-12-12
BEIJING UNIV OF TECH
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Problems solved by technology

Therefore, when the two welding machines work at a relatively fixed frequency, the dual constant current and multiple constant current control methods commonly used in single wire welding equipment show their incompatibility.
Moreover, even if some other methods can be used to control the phase relationship between the two welding machines to be fixed, they are mostly limited to the two extreme cases of the same phase and the reverse phase, and cannot achieve arbitrary adjustment of the phase to adapt to different welding conditions, so its application is limited. very restrictive

Method used

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  • Welding control method of diplonema MAG and welding source
  • Welding control method of diplonema MAG and welding source
  • Welding control method of diplonema MAG and welding source

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Embodiment Construction

[0027] This example will now be described with reference to the accompanying drawings.

[0028] This example uses the schema shown in Figure 2.

[0029] A concrete example of the present invention is shown in Fig. 3 as a structural diagram of a single welding machine, which generally includes two parts: the main circuit part 8 of the welding power supply and the control circuit part 9 with 80C196KC as the core. The input voltage of the main circuit is three-phase 380V; the input rectifier 8.1 is rectified by Fuji rectifier bridge, the model is FUJ6RI100G-160; The microcrystalline magnetic core has a transformation ratio of 15:2; the filter 8.6 uses a magnetic core saturated inductance, and the inductance is about 40μH; the control part adopts a control system based on 80C196KC single-chip microcomputer, which mainly completes the timing control and can realize the phase of the two welding machines The relationship varies from 0 to 180 degrees; the keyboard / display part adopts...

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Abstract

A dual-wire MAG welding control method features that the welding current feedback and voltage feedback are compared with the given signals in time shared mode, a control circuit is used to control welding, and during the welding two welders with constant frequency are used by keeping certain phase relation for high stability. Its welding power supply features that its controller uses a switching circuit consisting of current sampler, voltage sampler, switching switch, comparator, integral proportioner and amplifier connected to welding power output unit.

Description

technical field [0001] The invention relates to a control method for double-wire MAG welding and a welding power source thereof, belonging to the field of welding equipment and automation. Background technique [0002] Twin-wire MAG welding, as a feasible high-efficiency welding method, is still in the development stage. Everyone's understanding of this method is not completely the same, and there is no consensus on some specific issues. From the perspective of the form of the process, there are currently two main types, one is synchronous twin arc (Twin arc), and the other is independent twin arc (Tandem). The process characteristics of these two forms are different. For the form of the Twin arc system, two identical pulse welding power sources are used (only one power source can also be used), two sets of wire feeding mechanisms, and one conductive tip that can accommodate two welding wires (the two wires are not insulated from each other) , sharing a molten pool. When w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/09B23K9/095B23K9/10
Inventor 卢振洋黄鹏飞殷树言古金茂史国涛
Owner BEIJING UNIV OF TECH
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