Laser welding method

Abstract

The invention relates to a laser welding method. The method comprises the steps that laser emitted by a single mode fiber laser device is subjected to shaping, a laser beam is obtained, and the laserbeam forms light spots with the diameter being 0.03 mm to 0.05 mm on the workpiece; the workpiece moves in the first direction, the light spots swing in the to-be-welded area of the workpiece in the second direction, the first direction and the second direction are perpendicular, and the amplitude of the light spots ranges from 0.08 mm to 0.3 mm. The laser welding method can obtain a welding linewith the section shape being a rectangle or trapezoid, and the welding line strength is higher.

Description

technical field

[0001] The invention relates to the technical field of laser welding, in particular to a laser welding method. Background technique

[0002] Usually, the fiber laser without beam shaping has a Gaussian distribution of energy. In the actual welding process, the weld seam shape obtained is generally a V-shaped or Y-shaped weld with a wide top and a narrow bottom, resulting in a limited welding range. , Joints such as lap joints and butt joints have small joint areas and low weld strength. Contents of the invention

[0003] Based on this, it is necessary to provide a laser welding method for the problems of small bonding area and low strength of the traditional laser welding head.

[0004] A laser welding method comprising:

[0005] Reshape the laser emitted by the single-mode fiber laser to obtain a laser beam, and the laser beam can form a spot with a diameter of 0.03 mm to 0.05 mm on the workpiece;

[0006] The workpiece moves along a first direction, an...

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