Double-beam laser wire filling welding method and device

A technology of laser wire filling and welding method, which is applied in the direction of laser welding equipment, welding equipment, metal processing equipment, etc., and can solve problems such as unstable weld quality during welding wire melting transition process, difficulty in fully guaranteeing assembly accuracy, and limitation of laser spot size. , to improve the flow mode of the molten pool, reduce the transfer period of the droplet, and improve the surface quality of the weld

Pending Publication Date: 2021-07-30
CRRC QINGDAO SIFANG CO LTD
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Problems solved by technology

[0004] The invention provides a double-beam laser wire-filling welding method, which is used to solve the problem of weld failure caused by unstable welding wire melting transition proc

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  • Double-beam laser wire filling welding method and device
  • Double-beam laser wire filling welding method and device
  • Double-beam laser wire filling welding method and device

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[0031] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. Obviously, the described embodiments are part of the embodiments of the present invention , but not all examples. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0032] Compared with other traditional welding methods, laser welding technology has the advantages of high energy density, small welding deformation, high welding efficiency, and easy automatic control. With the successful development of various high-performance and high-power lasers, it has been used in aerospace, It is widely used in many fields such as automobile and shipbuilding. Althou...

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Abstract

The invention provides a double-beam laser wire filling welding method and device. The double-beam laser wire filling welding method comprises the following steps that a welding wire is preset at a welding seam; double-beam lasers are distributed on the two sides of the longitudinal center line of the welding seam at equal intervals; the center line of the welding wire and the center line of the double-beam lasers are adjusted to be in the same plane; and according to the light wire centering offset, the position of the welding wire is adjusted in real time, and the welding wire is controlled to be subjected to wire filling welding in the welding direction. Double beams are arranged in parallel to improve the molten droplet transfer behavior, the molten droplet transfer period is shortened, the molten droplet transfer size and the molten droplet oscillation amplitude are reduced, and the purpose of improving the surface quality of the welding seam is achieved; and the stability of a molten pool is improved by improving the flowing mode of the molten pool through the double beams, and the purposes of improving welding seam forming and welding seam internal quality are achieved.

Description

technical field [0001] The invention relates to the technical field of laser welding, in particular to a double-beam laser wire-filling welding method. Background technique [0002] As a laser welding process, laser wire welding has been widely used. [0003] At present, some laser welding in industrial production adopts the method of laser filling wire welding to improve the adaptability of the laser welding gap, reduce the assembly precision requirements, improve the weld composition and structure, thereby improving the process adaptability and weld quality. However, the addition of welding wire will increase the difficulty of process control, resulting in high requirements for wire feeding accuracy and difficult control of fuse stability. In order to obtain a good weld quality, the melting transition behavior of the welding wire must be strictly controlled, and the transition should be made in the form of a liquid bridge as much as possible to ensure better weld formatio...

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Application Information

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IPC IPC(8): B23K26/211B23K26/70
CPCB23K26/211B23K26/702
Inventor 马国龙梁建英田志骞张志毅韩晓辉
Owner CRRC QINGDAO SIFANG CO LTD
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