Coaxial composite welding method of laser spot welding and resistance spot welding

A technology of resistance spot welding and hybrid welding, applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve problems such as poor welding performance, improve mechanical properties, delay cooling rate, improve absorption rate and welding stability sexual effect
CN101934432AInactive Publication Date: 2011-01-05HARBIN INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
HARBIN INST OF TECH
Publication Date
2011-01-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a coaxial composite welding method of laser spot welding and resistance spot welding, belonging to the technical field of welding. The method solves the problem of poor welding spot performance when the laser spot welding technology is,applied to an aluminum alloy material. The welding method of the invention is based on the existing resistance spot welding method of the base material to be welded. A top electrode in the laser spot welding method uses a hollow electrode. When performing the resistance spot welding on the base material to be welded, a laser beam passes through the center of the hollow electrode to perform the laser spot welding on the base material to be welded, so as to realize the coaxial composite of the laser spot welding and the resistance spot welding. The method of the invention is used as a welding technology.
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Description

technical field

[0001] The invention relates to a coaxial composite welding method of laser and resistance spot welding, which belongs to the field of welding technology. Background technique

[0002] In recent years, laser manufacturing technology has developed by leaps and bounds. The famous A380 Airbus uses laser welding technology instead of traditional riveting technology to connect the fuselage of the new aluminum alloy composite material in the manufacturing process. Because of its strong adaptability to materials and structures, it has great development potential no matter in aerospace, national defense or civil industry.

[0003] Based on this background, laser spot welding technology has begun to emerge in the automobile manufacturing industry. It has obvious advantages in terms of solder joint performance, welding efficiency and welding cost for steel material structures. However, for aluminum alloy materials with high reflectivity, there are still big problems i...

Claims

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