Method for welding aluminium alloy instrument panel beam

Abstract

The invention provides a method for welding an aluminium alloy instrument panel beam, and avoids the defects that high probabilities of generating hydrogen holes, welding stress and deformation, as well as lower strength of welding joints, in the conventional aluminium alloy welding process, which further influence the welding quality of the aluminium alloy instrument panel beam. The welding method comprises the following steps: (1) before welding, the surfaces of both welding wires and aluminium alloy instrument panel beam base metal are subject to degreasing, de-oiling and oxide film removal; (2) the aluminium alloy instrument panel beam base metal is fixed on a fixture; and (3) welding operation is achieved. According to the invention, as the surfaces of both the welding wires and the aluminium alloy instrument panel beam base metal are subject to degreasing, de-oiling and oxide film removal before welding, the sources of hydrogen are reduced; as the welding fixture is designed, welding deformation is effectively controlled, one-step forming can be realized as much as possible, and the welding deformation quantity is reduced; owing to the proportioning adjustment of welding parameters and selection of welding materials, the strengths of the welding joints can be the same; and besides, the operation is simple and the productivity is improved.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a welding method for an aluminum alloy instrument panel beam. Background technique [0002] Aluminum alloy is the most widely used non-ferrous metal structural material in the industry. Aluminum alloy has low density, but relatively high strength, which is close to or exceeds high-quality steel. It has good plasticity, can be processed into various profiles, and has excellent electrical and thermal conductivity. And corrosion resistance, it has been widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical industry, and its usage is second only to steel. [0003] With the rapid development of science and technology and industrial economy in recent years, the demand for welded structural parts of aluminum alloys is increasing, and the research on the weldability of aluminum alloys is also in-depth. The wide application of aluminum alloy h...

AI Technical Summary

Problems solved by technology

[0005] The present invention aims at defects such as hydrogen holes, welding stress, deformation, and low strength of welded joints which are easy to occur in the existing aluminum alloy welding process, which further affect the welding effect of aluminum alloy instrument panel beams, and provides a welding method for aluminum alloy instrument panel beams