Method and system for controlling corner deformation of laser welding T-joint

Abstract

The present invention proposes a method for controlling the angular deformation of laser welding T-joints, the method comprising: emitting two laser beams to the region to be welded of the T-joint, and the two laser beams are located on the same side of the T-joint; wherein , one of the laser beams in the two laser beams acts on the ribs of the T-joint, and the other laser beam acts on the weld between the ribs of the T-joint and the bottom plate; The welding wire is placed in the plane of the other laser beam on the laser beam; the two laser beams pass through the welding wire to form a molten pool at the area to be welded. The invention also proposes a laser welding T-shaped joint angular deformation control system. The invention ensures that under the premise that the T-joint ribs are fully penetrated, the welding heat input of the T-joint bottom plate in the laser welding process is reduced, thereby regulating the angular deformation of the T-joint bottom plate caused by shrinkage.

Description

technical field [0001] The present application relates to the field of laser manufacturing, in particular to a method and system for controlling angular deformation of T-joints in laser welding. Background technique [0002] Aluminum alloys and titanium alloys are widely used in aviation, aerospace and other fields because of their high specific strength, high specific stiffness and good weldability. With the increasing demand for the application of new lightweight alloys in weaponry structures, how to improve material utilization and reduce manufacturing costs has attracted widespread attention. Laser welding has the characteristics of high energy density, small heat input, large single-pass penetration, high welding speed, non-contact and no vacuum, etc. Compared with conventional fusion welding methods, the deformation is smaller, which is conducive to the compact design of product structure, structural weight and production cost. It is especially suitable for the manufa...

AI Technical Summary

Problems solved by technology

However, due to the hysteresis effect of welding deformation, there will still be angular deformation of the T-joint after the tooling is removed. In addition, because the tooling mold has a compression or adsorption function, the structure is complicated and the tooling cost is high

Another method to control the angular deformation of T-joints is post-welding orthopedics: for aluminum alloy parts, shot peening, aging, overall heat treatment and other methods are often used, the process is relatively complicated, the cost is high, and the orthopedic effect is not obvious

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