Method of compound welding twin arcs and cold wire pulse

A hybrid welding and double arc technology, applied in arc welding equipment, welding equipment, electrode accessories, etc., can solve problems such as weld defects and small welding parameters, increase the viscosity of the molten pool, reduce the probability of interference between the two arcs, and stabilize The effect of the welding process

Inactive Publication Date: 2016-08-03
TIANJIN UNIV
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this welding method is not suitable for smaller welding parameters
Because the middle welding wire is non-conductive, under smaller welding parameters, the other two welding wires produce less heat, so the cold wire is not easy to melt, resulting in weld defects

Method used

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  • Method of compound welding twin arcs and cold wire pulse
  • Method of compound welding twin arcs and cold wire pulse
  • Method of compound welding twin arcs and cold wire pulse

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0060] Implementation method: adopt the welding method of double arc and cold wire pulse hybrid welding, and implement the plate surfacing test. The specific implementation steps are as follows:

[0061] Basic steps of welding process:

[0062] (1) According to Figure 4 Connect equipment (including main system equipment and acquisition system equipment) at the position shown, and connect to a power supply with a power frequency of 50Hz;

[0063] (2) Adjust the working mode of the two PulseMIG-350, and adjust the pulse working mode of the two welding machines to one master and one slave through the front control panel, that is, the master welder guides the slave welder to send pulse signals;

[0064] (3) Adjust the preset current and voltage of the two welding machines, the preset current range: 80-220A, the preset voltage range: 18-32V;

[0065] (4) Adjust the corresponding pulse waveform input of the two welding machines, and the pulse waveform output that can be realized ...

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Abstract

The invention provides a method of compound welding twin arcs and cold wire pulse. Projection points of a cold wire conductive tube, a first guiding welding wire and a second guiding welding wire on the surface of a workpiece are three vertexes of an equilateral triangle; the equilateral triangle formed by the projection points of the first guiding welding wire, the second guiding welding wire and a cold wire on the surface of the workpiece is arranged in a molten pool; and in addition the cold wire is arranged behind the first guiding welding wire and the second guiding welding wire in the welding direction and is regulated according to different phase relationships of pulse currents on the first guiding welding wire and the second guiding welding wire during welding. According to the method, the cold wire is added into the twin arcs, so that the welding efficiency is improved, the molten pool is also stabilized with addition of the cold wire, and the action of thermal input is lowered; and as the three wires are integrated into a welding gun, only one welding gun is used during welding, and the operation is simple, convenient and rapid.

Description

[0001] The application of the present invention is a divisional application of the parent application "three-wire welding torch and welding system and method for double arc and cold wire pulse composite welding". The application number of the parent application is 2015100332459, and the filing date of the parent application is January 2015 23rd. technical field [0002] The invention relates to the technical field of welding engineering, and more specifically relates to a three-wire torch, a welding system and a method for combined welding of double arcs and cold wire pulses. Background technique [0003] In recent years, the rapid development of aerospace, transportation, marine engineering and other industries has greatly promoted the progress of welding technology. The diversity of products, materials, and conditions of use has led to higher and higher requirements for welding efficiency and quality. How to use high-quality and efficient welding technology to meet the nee...

Claims

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Application Information

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IPC IPC(8): B23K9/24B23K9/26B23K9/28B23K9/09
CPCB23K9/24B23K9/092B23K9/26B23K9/28
Inventor 李桓向婷刘永强韦辉亮
Owner TIANJIN UNIV
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