Laser welding joint defect TIG fusion repair process method

Abstract

The invention belongs to a fusion repair process method, and particularly relates to a laser welding joint defect TIG fusion repair process method. The method comprises the following steps that Step 1, welding is simulated; Step 2, cleaning is performed; Step 3, a camera is fixed and installed; Step 4, argon is introduced; Step 5, a welder uses a self-made lengthened welding gun to perform fusion repair welding, the set minimum current and the set maximum current are adopted to perform welding on a test piece, and the gas flow of a nozzle ranges from 10 L / min to 15 L / min; Step 6, detecting is performed; Step 7, defect inspection is performed; and Step 8, real welding and repair welding are performed, specifically, real welding is performed through the method, and the defect corresponding to a real welding seam is subjected to repair welding in the welding seam fusion repair process for the defect occurring in the welding process. The method has the effects that in the welding process, gas protection is performed on welding seams and adjacent base metal, and oxidation is prevented; the welding process is stable, the heat input is low, the welding seam quality after fusion repair is good, meanwhile, the welding seam shapes are improved, root stress concentration is reduced, and the welding seam quality is guaranteed.

Description

technical field [0001] The invention belongs to a fusion repair process method, in particular to a TIG fusion repair process method for laser welding welding joint defects. Background technique [0002] The safe storage of spent fuel assemblies is a key concern of the nuclear power industry. As the most important equipment for wet storage of spent fuel assemblies, spent fuel storage racks are widely used in nuclear power plants and reprocessing plants. With the rapid development of my country's nuclear power industry, the market demand for spent fuel storage grids is huge. At present, the localization of spent fuel storage grid equipment has been completed, and the structural form of new spent fuel storage grids has also been proposed in the manufacturing process. new requirements. [0003] The new type of spent fuel storage grid is composed of modular storage casings that are welded and connected through the connecting plate, and then welded and fixed by the lower end and t...

AI Technical Summary

Problems solved by technology

[0010] Aiming at the defects of the prior art, the present invention provides a TIG fusion repair process for laser welding joint defects, which mainly solves the surface defects of laser welding welding joints by using TIG Problems Eliminated by Melting Repair Process

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