Thick plate laser arc composite double-sided synchronous horizontal welding method and device

A laser arc and composite double-sided technology, which is applied in laser welding equipment, welding equipment, metal processing equipment, etc., to achieve the effects of preventing undercutting, improving uniformity, and improving laser energy utilization

Active Publication Date: 2022-02-08
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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Problems solved by technology

[0004] In order to solve the deficiencies in the prior art, the present invention provides a thick plate laser-arc composite double-sided synchronous horizontal welding method and device, which solves the problems of thick plate laser-GMAW composite horizontal welding of bottom layer and filling layer welding pores and undercut welding defects , to solve the welding seam crack defect caused by the large depth-to-width ratio of the weld in the laser-GMAW composite welding thick plate filler layer, improve the uniformity of the weld composition and the stability of the welding process

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  • Thick plate laser arc composite double-sided synchronous horizontal welding method and device
  • Thick plate laser arc composite double-sided synchronous horizontal welding method and device
  • Thick plate laser arc composite double-sided synchronous horizontal welding method and device

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Embodiment Construction

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0031] The invention is a laser arc compound double-sided synchronous horizontal welding method for a thick plate, comprising the following steps:

[0032] Step 1: prepare welding workpiece 1, process the part to be welded of welding workpiece 1 into a double K-shaped groove, grind and clean the processed double-sided groove and the surfaces on both sides, and press the processed welding workpiece 1 Fixed by horizontal welding;

[0033] Step 2: Place two lase...

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Abstract

The invention discloses a thick plate laser arc composite double-sided synchronous horizontal welding method and device. The horizontal welding method comprises the following steps that 1, a welding workpiece is prepared; 2, two laser arc devices are arranged on the two sides of the welding workpiece correspondingly, and the positions are adjusted; 3, welding process parameters are set, a laser arc device is started, and a base layer is welded; and 4, welding process parameters are adjusted, a laser arc device is started, and filling layer welding is performed. The method reduces the porosity of the weld joint, solves the problems of incomplete penetration of the weld joint, incomplete fusion of the side wall, weld joint cracks and the like, and ensures the quality of the weld joint and the welding stability. The horizontal welding device comprises a TIG welding gun, a first laser device, a second laser device, a GMAW welding gun and an air injection assembly.

Description

technical field [0001] The invention relates to the technical field of laser welding, in particular to a laser arc composite double-sided synchronous horizontal welding method and device for a thick plate. Background technique [0002] Compared with arc single-sided welding, arc double-sided synchronous welding double-sided symmetrical heating cancels 10 processes such as pre-weld preheating, post-heating, root cleaning, grinding, magnetic particle inspection and orthopedics, reducing welding defects and deformation , and improved welding efficiency. [0003] For large structural parts such as ships, large storage tanks and pressure vessels, transverse welding is an important connection form, and the droplet transfer behavior is more complicated due to the influence of gravity. Laser-gas metal arc welding (GMAW) hybrid welding combines the advantages of laser welding and arc welding, and has the characteristics of large penetration depth, high welding speed, wide gap adapta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/348B23K26/70
CPCB23K26/348B23K26/702
Inventor 彭进许红巧刘继高杨晓红吕风凌自成王永彪龙伟民张永振王星星李帅王博王冰杨嘉佳
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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