Laser guide GMAW (Gas Metal Arc Welding) electric arc compound transverse welding method

A transverse welding, laser-guided technology, applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of undercut and weld centerline deviation, so as to improve welding speed, improve welding efficiency, and increase process Effects of parameter ranges

Active Publication Date: 2013-02-13
哈尔滨工大焊接科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The present invention aims to solve the problems of undercut and weld centerline deviation caused by molten metal dripping down when the existing welding method is used for transverse welding in a vertical plane, and proposes a laser-guided GMAW arc compound transverse welding method

Method used

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  • Laser guide GMAW (Gas Metal Arc Welding) electric arc compound transverse welding method
  • Laser guide GMAW (Gas Metal Arc Welding) electric arc compound transverse welding method
  • Laser guide GMAW (Gas Metal Arc Welding) electric arc compound transverse welding method

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specific Embodiment approach 1

[0017] Embodiment 1: A laser-guided GMAW arc hybrid transverse welding method in this embodiment is performed in the following steps:

[0018] 1. Degrease and remove oxide film on the workpiece to be welded: first wipe the surface of the workpiece to be welded with acetone for 2 to 3 times to remove oil stains, and then use sodium hydroxide solution with a concentration of 6% to 10% to remove the aluminum After soaking the alloy plate for 6min~12min, rinse it with clean water, and then soak the workpiece to be welded with a nitric acid solution with a concentration of 25%~35% by mass for 2min~4min, rinse it with clean water and dry it, and then put the welder to be welded. The to-be-welded surface of the piece is fixed on the traveling mechanism in a transverse manner;

[0019] 2. Filling wire: the diameter of the welding wire is 1.0mm~1.6mm, the dry elongation of the welding wire is controlled at 10mm~30mm, and the angle α between the welding wire and the normal line is 30°~7...

specific Embodiment approach 2

[0025]Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that in step 1, acetone is used to wipe the surface of the workpiece to be welded twice to remove oil stains, and then the aluminum alloy is treated with sodium hydroxide solution with a mass percentage concentration of 8%. After soaking the board for 9 minutes, rinse it with clean water, and then soak the workpiece to be welded with a 30% nitric acid solution by mass for 3 minutes. Other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0026] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that in step 2, the diameter of the welding wire is 1.2 mm~1.4 mm, the dry elongation of the welding wire is controlled at 12 mm~25 mm, and the angle α between the welding wire and the normal line is 40 mm. °~65°. Other steps and parameters are the same as in the first or second embodiment.

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Abstract

The invention provides a laser guide GMAW (Gas Metal Arc Welding) electric arc compound transverse welding method, relates to a transverse welding method and solves the problem of the existing welding method that fused metal flows down when transverse welding is carried out in a vertical plane so as to cause undercut and deviation of a central line of a welding line. The laser guide GMAW electric arc compound transverse welding method is carried out by the following steps of: 1, carrying out oil-removing and oxidization-film-removing treatment on a work piece to be welded; 2, filling a welding wire; and 3, starting a laser device and a GMAW electric arc welding machine. With the adoption of the laser guide GMAW electric arc compound transverse welding method, the flowing of the fused metal can be controlled under the condition with a large welding current, so that the undercut defect of the welding line is eliminated and the central line of the welding line is rightly centered. The laser guide GMAW electric arc compound transverse welding method is applicable to the field of metal transverse welding engineering.

Description

technical field [0001] The present invention relates to a transverse welding method. Background technique [0002] As we all know, compared with the traditional horizontal welding, the transverse welding process is very different. During transverse welding, the molten metal is subjected to the action of its own gravity. When the surface tension of the molten metal is not enough to resist its own gravity, the molten metal is Will run down, resulting in defects such as undercuts, weld flashes, and misalignment of the weld centerline. Especially for aluminum alloys, due to the characteristics of low surface tension and good fluidity, the phenomenon of molten metal dripping down during the transverse welding process will be more serious. [0003] At present, the research on transverse welding methods at home and abroad mainly focuses on traditional arc welding and submerged arc welding. The control methods used are mainly pulse current control, magnetic field auxiliary control ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K28/02B23K26/346
Inventor 雷正龙李颖陈彦宾吕涛
Owner 哈尔滨工大焊接科技有限公司
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