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A multi-beam assisted laser-arc hybrid welding method

A hybrid welding and laser technology, used in laser welding equipment, welding equipment, metal processing equipment, etc., can solve the problem of application limitations of high-intensity electromagnetic fields, and achieve the effect of preventing component segregation, ensuring stability, and increasing the amount of powder feeding.

Active Publication Date: 2021-08-31
HARBIN INST OF TECH
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  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem of high-intensity electromagnetic field in the welding process of high-nitrogen steel and other materials in the laser-arc composite heat source welding process. To solve the problem of offset, a multi-beam assisted laser-arc hybrid welding method is provided to improve arc stability and alloy the weld

Method used

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  • A multi-beam assisted laser-arc hybrid welding method
  • A multi-beam assisted laser-arc hybrid welding method
  • A multi-beam assisted laser-arc hybrid welding method

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specific Embodiment approach 1

[0027] Specific embodiment one: a kind of multi-beam assisted laser-arc hybrid welding method of the present embodiment, it is carried out according to the following steps:

[0028] Step 1: Before welding, according to the thickness of the plate, process the groove of the workpiece to be welded or directly perform surface cladding, grind and clean the processed groove or surface, and fix the polished and cleaned workpiece to be welded on the welding fixture superior;

[0029] Step 2: Use a clamp to rigidly fix the laser head and the arc welding torch. The angle between the axis of the welding torch and the base metal is 30-50°. Use a clamp to fix the powder feeding pipe around the nozzle of the welding torch. The number of powder feeding pipes is 3 to 6. The axis is aligned with the arc, and a conical tube can be added to the front end of the powder feeding tube to constrict the air flow, and each powder feeder is preset with 100g of required alloy powder;

[0030] Step 3: Se...

specific Embodiment approach 2

[0033] Embodiment 2: The difference between this embodiment and Embodiment 1 is that processing the groove refers to processing the part to be welded into a V-shaped groove, an I-shaped groove or a Y-shaped groove.

[0034] Others are the same as in the first embodiment.

specific Embodiment approach 3

[0035] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the laser is CO 2 Gas laser, YAG solid-state laser or semiconductor laser.

[0036] Others are the same as in the first embodiment.

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Abstract

A multi-beam assisted laser-arc hybrid welding method, which relates to the field of material processing engineering, the purpose of the invention is to solve the problem of high-intensity electromagnetic field in the welding process of high-nitrogen steel and other materials in the laser-arc composite heat source welding process The application of the welding gun is limited, and it is necessary to supplement the alloy elements and the arc deviation under the powder feeding condition. The axis is aligned near the tip of the welding wire / tungsten pole, and can be adjusted in the direction perpendicular to the axis of the welding wire / tungsten pole. With the axis of the welding wire / tungsten pole, multiple powder feeding pipelines are attached to the nozzle of the welding torch, and their axes are aligned with the welding wire Near the tip / tungsten pole tip, adjustable in a direction perpendicular to the wire / tungsten pole axis. The invention is applied in the field of welding.

Description

technical field [0001] The invention relates to the field of material processing engineering, in particular to a multi-beam assisted laser-arc hybrid welding method. Background technique [0002] High-nitrogen steel has strength, good impact toughness, and corrosion resistance, and nitrogen substitution for nickel brings production economy and good biocompatibility, and has broad application prospects in bulletproof armor, transportation pipelines, and medical devices. However, due to the characteristics of high nitrogen steel, its weldability is poor, and there are problems such as loss of solid solution nitrogen, significant pore defects, and precipitation of nitrides. At present, the method of mixed nitrogen protection is generally used to prevent nitrogen overflow, but there is no more effective nitrogen fixation and nitrogen increase method, and the addition of nitrogen will cause other defects in the weld or the welding process will become unstable. [0003] Laser-arc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/348B23K26/70
CPCB23K26/348B23K26/70
Inventor 雷正龙黎炳蔚吴世博陈彦宾
Owner HARBIN INST OF TECH
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