A new type of welding device

Abstract

The invention provides a novel welding device. An ultrasonic impact device for performing ultrasonic impact in an aligning way on high-temperature welding seam metal which is solidified on a workpiece is arranged behind a welding gun body, wherein the strength of the welding seam metal is not recovered; therefore, the ultrasonic impacting device and the welding gun body synchronously move, during welding, the impact with the ultrasonic frequency is applied to the high-temperature welding seam metal which is solidified at the fixed position behind a molten pool along the thickness direction of the welded workpiece, wherein the strength of the welding seam metal is not recovered; the metal positioned in the condensation and contraction states is subjected to impact to generate plasticity extension by the excitation force action of ultrasonic, so the compression plasticity strain generated in the heating process is compensated, and the welding deformation is reduced; the tissue of the welding seam metal can be fined, and the crystallizing directionality of crystal particles is changed, so the tissue tends to be in a more uniform state. Compared with the prior art, the novel welding device has the advantages that the stress and deformation of the metal at a welding seam are effectively eliminated, the workpiece is difficult to deform and is high in welding strength, the structure is simple and reliable, and the automation is easy to realize.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a novel welding device for effectively eliminating welding residual stress and deformation. Background technique [0002] Aluminum and its alloys are one of the most widely used non-ferrous metals. Aluminum alloy materials have the advantages of high specific strength, corrosion resistance, good electrical and thermal conductivity, and weldability. The thin-plate aluminum alloy structure has the characteristics of light weight, good process performance (easy to process and form), and convenient connection, so it replaces the traditional steel structure and is widely used in various welded structure products. my country has also made great progress in the production and use of aluminum alloy profiles, and its market competitiveness has been continuously improved. In recent years, it has been widely used in the fields of aerospace, aviation, chemical industry, electrical appliance...

AI Technical Summary

Problems solved by technology

However, this invention simply uses the principle of ultrasonic impact to perform ultrasonic impact on the welded joint that has been welded, and cannot consistently eliminate the stress and deformation of the metal at the weld. The effect is not significant, and the workpiece still has problems such as deformation and weak strength.

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