Device and method for preparing copper-clad aluminum wire through laser welding

Abstract

The invention relates to a device and method for preparing a copper-clad aluminum wire through laser welding. The device comprises a first straightening assembly, a water cooling assembly, a cladding assembly, a welding assembly, a polishing assembly, a second straightening assembly, an aluminum rod, a surface polishing and brushing assembly, a wiping assembly, a cleaning assembly, rollers, a copper plate, a continuous pulling assembly and a flaw detection assembly; the rollers are rotatably arranged on the two sides of the copper plate; the cleaning assembly, the wiping assembly and the surface polishing and brushing assembly are sequentially arranged on one sides of the rollers; the second straightening assembly and the polishing assembly are arranged on the aluminum rod; the coating assembly is arranged on the same side of the surface polishing and brushing assembly and the polishing assembly; and the welding assembly is arranged on the other side of the cladding assembly. The device is high in automation degree, and the problem of surface damage of copper-clad aluminum can be effectively solved; the welding process is stable, the weld surface and internal quality are good, and the performance is high; and the device is green, environment-friendly, pollution-free, free of interference of electric and magnetic fields and free of vacuum protection.

Description

technical field [0001] The invention belongs to the technical field of metal composite wires, and in particular relates to a device and method for preparing copper-clad aluminum wires by laser welding. Background technique [0002] Copper-clad aluminum wire refers to the aluminum core wire as the main body, which is covered with a copper layer to achieve metallurgical bonding during the drawing process, thereby obtaining a bimetallic composite conductor with stable performance, which can be used as a conductor for coaxial cables and electrical appliances. Equipped with cable conductors. The aluminum wire has a small specific gravity, but its welding performance is not good, so the aluminum wire is covered with a copper layer. This copper-clad aluminum wire can not only take advantage of the small specific gravity of aluminum, but also improve the welding performance. [0003] At present, copper-clad aluminum production processes include electroplating, crimping, and claddin...

AI Technical Summary

Problems solved by technology

The bottleneck of copper-clad aluminum production by electroplating process is that the diameter is greater than Φ2.4mm, and the thickness of one side of the copper electroplating layer cannot exceed 20% of its diameter, so it cannot meet the various needs of many customers

At present, the cladding welding method is mainly used to produce copper-clad aluminum. The traditional cladding welding method mainly adopts argon arc welding. Due to the large heat-affected parts of argon arc welding, the repaired workpiece often causes deformation, high hardness, blisters, and local annealing. , cracking, pinholes, wear, scratches, undercut or insufficient bonding force and internal stress damage; due to the high current density of argon arc welding, the ultraviolet radiation generated by the arc is 5-30 times that of ordinary arc welding, and the infrared ray It is about 1-1.5 times that of ordinary arc welding. The ozone concentration generated during the welding process exceeds the hygienic standard and is more harmful to the human body.

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