Laser-double side arc compound welding method for thick plate

A composite welding and double-sided technology, which is applied in the direction of laser welding equipment, welding equipment, welding/welding/cutting items, etc., can solve the problems of high equipment cost, complicated and time-consuming operation, large welding stress and deformation, etc., to simplify the difficulty of operation, Good flow performance, good for overflow effect

Active Publication Date: 2015-12-09
上海临仕激光科技有限公司
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Problems solved by technology

[0016] The object of the present invention is to provide a thick plate laser-double-sided arc hybrid welding method. When the existing laser-arc hybrid welding method welds a thick plate, there

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  • Laser-double side arc compound welding method for thick plate
  • Laser-double side arc compound welding method for thick plate
  • Laser-double side arc compound welding method for thick plate

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Embodiment Construction

[0060] Figure 18 It is a flow chart of the laser-double-sided arc hybrid welding method, such as Figure 18 As shown, the embodiment of the present invention provides a thick plate laser-double-sided arc hybrid welding method, including:

[0061] Step 201, according to the type of welded joint, process a bevel on the part to be welded of the thick plate workpiece;

[0062] Step 202, fixing the thick plate workpiece and cleaning the part to be welded and the groove;

[0063] Step 203, a laser beam and a first welding torch are arranged on one side of the welding joint, the optical axis of the laser beam forms a first included angle of 30° to 45° with the central axis of the first welding torch; There is a predetermined distance between the incident point of the laser beam on the part to be welded and the welding wire end of the first welding torch; on the other side of the welding joint, a second welding torch is arranged in mirror image relative to the first welding torch; ...

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Abstract

The invention provides a laser-double side arc compound welding method for a thick plate, and solves the problems of welding line root defect, low laser energy utilization rate, complicated operation, time consumption, high equipment cost and the like during thick plate welding of the existing welding method. The laser-double side arc compound welding method comprises the following steps: 1, processing a groove in a part to be welded according to the form of a welding joint; 2, fixing a workpiece, and cleaning the groove; 3, arranging a laser bundle and a first welding gun on one side of the joint, wherein a first included angle of 30-45 degrees is formed between the optical axis of the laser bundle and the middle axial line of the first welding gun, and a preset gap is formed between the incidence point of the laser bundle and the tail end of a welding wire of the welding gun; arranging a second welding gun on the other side of the joint in a mirror image manner; 4, forming a double-side penetrating melting pond at the joint in a welding process by energy matching, wherein an electric arc plasma generated by the first welding gun is in contact with a laser-induced plasma generated by the laser bundle, thus diluting the laser-induced plasma.

Description

technical field [0001] The invention relates to the technical field of laser processing, in particular to a laser-arc hybrid welding method for large thick plates. Background technique [0002] In the field of welding, the plate with a thickness less than 4mm is generally called a thin plate, the plate with a thickness between 4mm and 12mm is called a medium plate, and the plate with a thickness greater than 12mm is called a thick plate. [0003] Laser-arc hybrid welding combines the advantages of laser welding and arc welding. It has the characteristics of large penetration depth, high welding speed, wide gap adaptability and small welding deformation. It shows unique advantages in medium and thick plate welding. [0004] Currently known laser-arc hybrid welding methods are: [0005] 1. Conventional laser-arc hybrid welding method [0006] Laser-arc composite processing methods such as figure 1 As shown, for the butt joint, the method is a laser heat source 1 and an arc ...

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Application Information

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IPC IPC(8): B23K26/348B23K101/16
CPCB23K28/02B23K2101/18
Inventor 冯杰才
Owner 上海临仕激光科技有限公司
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