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High-frequency vibration laser self-wire-fusing welding method

A high-frequency vibration and welding method technology, which is applied in welding equipment, tin feeding devices, metal processing equipment, etc., can solve the problems of complex control of welding parameters, high requirements for wire feeding accuracy, and poor stability of welding wire, and achieve accurate and flexible state control , Improve the solidification and crystallization process, and increase the effect of tolerance

Inactive Publication Date: 2019-05-28
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention aims to solve the problems of low welding efficiency, high wire feeding accuracy requirements, poor welding wire stability, complicated welding parameter control, poor self-gap adaptability and poor weld quality in the existing laser wire-filled welding fusion method, and proposes a A kind of high-frequency vibration laser self-fuse welding method

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  • High-frequency vibration laser self-wire-fusing welding method

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specific Embodiment approach 1

[0020] Specific embodiment 1: The high frequency vibration laser self-fuse welding method of this embodiment is carried out according to the following steps: 1. Focus the laser spot on the welding wire, and install the piezoelectric ceramic brake at the end of the welding wire; 2. Pass in shielding gas, Start the laser and piezoelectric ceramic brake, and the wire feeding speed is 5-10m / min, so that the laser beam is always focused on the welding wire, so as to realize the laser self-fuse welding.

[0021] The material and thickness of the workpiece to be welded suitable for the traditional laser fuse welding method are applicable to the method of this embodiment. It needs to be pointed out that the parameters involved in this method include gap width, wire feeding speed, laser power, welding speed, shielding gas composition and flow rate. These main process parameters should be adjusted according to the actual material type, size and joint form, gap size, etc. To optimize the sy...

specific Embodiment approach 2

[0022] Specific embodiment two: this embodiment is different from specific embodiment one in that the flow rate of the protective gas in step two is 15-25L / min. Others are the same as the first embodiment.

specific Embodiment approach 3

[0023] Specific embodiment three: This embodiment of the wire is different from specific embodiment one or two in that the welding speed in step two is 5-10m / min. Others are the same as the first or second embodiment.

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Abstract

The invention discloses a high-frequency vibration laser self-wire-fusing welding method. The problems that according to an existing laser filler wire welding wire fusing method, the welding efficiency is low, the wire feeding precision requirement is high, welding stability is poor, welding parameter control is complex, gap adaptability is poor and the welding line quality is poor are solved. Thehigh-frequency vibration laser self-wire-fusing welding method comprises the steps that laser spots are focused on a welding wire, and a piezoelectric ceramic brake is arranged at the tail end of thewelding wire; inflation of protective gas is conducted, a laser device and the piezoelectric ceramic brake are started, the wire feeding speed is 5-10 m / min, laser beams are constantly focused on thewelding wire, and accordingly laser self-wire-fusing stabilizing solution bridge transition welding is achieved.

Description

Technical field [0001] The invention belongs to the technical field of laser welding, and particularly relates to a high-frequency vibration laser self-fusing wire welding method. Background technique [0002] Compared with other traditional welding processes, laser welding has its unique advantages and characteristics. The main advantage is that the control of energy input is relatively accurate, and the laser beam can be concentrated in a very narrow area, thereby generating a concentrated heat source with high energy density, and quickly sweeping through the weld. It is a high-quality, efficient and high-quality Welding method. Laser welding is currently more and more widely used in automotive, aerospace and other fields. [0003] However, the laser spot is small, the welding requires high precision in the assembly of the weldment, and the position of the beam on the workpiece must not be significantly shifted, and the maximum allowable gap does not exceed 10% of the plate thi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K1/005B23K3/06
Inventor 陈树君黄文浩肖珺贾亚洲苑城玮
Owner BEIJING UNIV OF TECH
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