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Laser-ultrasmall current GMA compound heat power supply welding method

A composite heat source and welding method technology, applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve the problem of large deformation of welded joints, and achieve the advantages of improving welding efficiency, refining weld grains, and reducing deformation. Effect

Inactive Publication Date: 2009-01-21
HARBIN WELDING INST LTD
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Problems solved by technology

[0004] In order to overcome the problem of large deformation of welded joints of ultra-thin metal plates in the background technology, the present invention provides a new laser-ultra-small current GMA composite heat source welding method, which can obtain high-quality, ultra-low deformation welding of metal thin plates connector

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  • Laser-ultrasmall current GMA compound heat power supply welding method

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Embodiment Construction

[0019] The test conditions are as follows: the laser is the HL2006D Nd:YAG solid-state laser produced by the German HAAS company, the maximum output power is 2.0kW, the wavelength is 1.06μm, the welding torch with the focal length of 200mm is used, and the laser focus is located at 0.5mm below the surface of the workpiece; the arc welding machine is Austrian TPS5000 digital GMA welding machine produced by Fonius;

[0020] Examples of aluminum alloy welding:

[0021] The specific implementation scheme will be described below by taking the 5A06 aluminum alloy plate as an example. Use 5356 welding wire with a diameter of 1.2mm; the test plate is 5A06 aluminum alloy with a thickness of 2.0mm, and the size of the test plate is 50mm×400mm;

[0022] Laser-ultra-small current GMA composite heat source welding parameters: the spacing d of the light wire on the surface of the workpiece is 1mm, the welding speed is 1m / min, the laser power is 1850W, the wire feeding speed is 1.0m / min, an...

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Abstract

The invention discloses a welding method of a laser-ultra-small current GMA composite heat source; the welding method can solve the technical problem of large deformation when a metal thin plate is welded; the invention mainly comprises the following steps; in composite heat source welding, the adopted average current of a GMA arc (5) is 15A to 30A; when the steel material is welded, the power of the laser (1) is more than 800W, and when the aluminium alloy is welded, the power of the laser (1) is more than 1,600W; a laser beam (1) is at the front and the GMA arc is at the back; and the distance of chevilled silk is 0mm to 3mm and the two molten pools are connected together. The welding method is applicable to the welding of thin metal plates with the thickness to be 0.5mm to 4mm such as aluminium alloy, carbon steel, low alloy and more than two dissimilar metals.

Description

technical field [0001] The laser-ultra-small current GMA composite heat source welding method proposed by the invention belongs to the technical field of laser-arc composite heat source welding, and particularly relates to laser-ultra-small current GMA composite heat source welding of ultra-low deformation sheet metal materials. technical background [0002] The welding deformation control technology of aluminum alloy, stainless steel and carbon steel sheet is one of the technical problems in the welding field. Welding deformation is related to factors such as materials, welding methods, and welding processes. One of the main problems of using conventional GMA to weld thin plate materials such as aluminum alloy and stainless steel is the large amount of deformation of the welded joint. From the perspective of welding technology, reducing heat input (line energy) is one of the effective ways to reduce the deformation of welded joints. At the same welding speed, the smaller ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K28/02B23K26/348
Inventor 林尚扬王威王旭友雷振秦国梁杜兵卜大川
Owner HARBIN WELDING INST LTD
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