InFocus-MIG/MAG electric-arc composite welding method

An infocus-mig, hybrid welding technology, applied in arc welding equipment, welding equipment, manufacturing tools, etc., can solve the problem of high laser cost, achieve the effect of simple replacement of consumables, improve welding efficiency, and reduce volume

Inactive Publication Date: 2015-10-21
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high cost of lasers, the application of this method has great limitations.

Method used

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  • InFocus-MIG/MAG electric-arc composite welding method
  • InFocus-MIG/MAG electric-arc composite welding method
  • InFocus-MIG/MAG electric-arc composite welding method

Examples

Experimental program
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Effect test

specific Embodiment approach 1

[0026] Specific embodiment one: a kind of InFocus-MIG / MAG electric arc hybrid welding method of the present embodiment, it is carried out according to the following steps:

[0027] Step 1: Before welding, grind or clean the surface of the workpiece to be welded, and fix the polished or cleaned workpiece to be welded on the welding fixture;

[0028] Step 2: Keep the axis of the InFocus welding torch vertical to the workpiece during the welding process, adjust the compounding of the MIG / MAG welding torch and the InFocus welding torch on the opposite side, and the angle between the MIG / MAG welding torch and the workpiece is 30-60°;

[0029] Step 3: Set welding process parameters: InFocus current is 800A, MIG / MAG welding current is 100-350A, MIG / MAG welding wire length is 10-15mm, shielding gas flow is 15-30L / min, InFocus cathode and MIG / MAG The distance between the light wires is 2-3mm, and the welding speed is 100-1000mm / min;

[0030] Step 4: Start the control switch, and carry...

specific Embodiment approach 2

[0032] Embodiment 2: This embodiment differs from Embodiment 1 in that: during the welding process, the InFocus welding torch and the MIG welding torch work together on the molten pool area to be welded. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0033] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the angle between the MIG welding torch and the workpiece is 50°. Others are the same as in the first embodiment.

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Abstract

The invention discloses an InFocus-MIG/MAG electric-arc composite welding method, and relates to a welding method. The method comprises the following steps: I, processing and forming a to-be-welded workpiece, and polishing or cleaning the surface of the to-be-welded workpiece; II, keeping an axis workpiece of an InFocus welding gun perpendicular all the time in a welding process; III, setting welding process parameters: InFocus current of 800A, welding wire dry extension of 10-15 mm, shielding gas adopting Ar gas, shielding gas flow rate of 18L/min, a distance of 2 mm between an InFocus cathode and an MIG wire and welding speed of 6m/min; and IV, starting a control switch to carry out composite welding. According to the InFocus-MIG/MAG electric-arc composite welding method, an InFocus electric-arc peak value can be as high as 1000A relative to 100A peak value of anITG electric arc; current acting force and energy density are relatively large; key hole welding can be realized; depth of fusion is large; welding speed is high; and welding efficiency is greatly improved.

Description

technical field [0001] The invention relates to an InFocus-MIG / MAG arc hybrid welding method, which belongs to the field of material processing engineering. Background technique [0002] In modern welding technology, quality, efficiency, and low cost are important indicators in welding industrial production, and with the rapid development of aerospace, aviation, transportation, ocean engineering, etc., a large amount of welding workload is required every year. Higher requirements are put forward for high-quality, high-efficiency and low-cost welding methods. The welding method using composite heat source has become the main method to solve this problem at present. Composite heat source is not a simple superposition of two single heat sources in terms of heat source structure. The superposition of composite heat sources is a method of welding multiple heat sources or composite heat sources on the same side or different sides of the workpiece based on the characteristics and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/173
CPCB23K9/1735
Inventor 雷正龙杨雨禾胡雪
Owner HARBIN INST OF TECH
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