Laser welding technology of automobile body

Abstract

The invention belongs to the technical field of laser welding, and specifically relates to a laser welding technology of an automobile body. The technology comprises the following steps: arranging a welding flux into a housing of a laser welding device; melting the welding flux into welding liquid through a laser welding gun of the laser welding device; and welding the automobile body through thewelding liquid, wherein a tapered sucking tube of the laser welding device moves in the welding liquid together with the lower end part of the housing; a pump of the laser welding device works to drive the tapered sucking tube to pump air in the welding liquid and drain the air through an air guide pipe and the pump; the pump of the laser welding device is capable of driving a pneumatic motor to rotate, and the pneumatic motor drives a gear to rotate; the rotating gear drives a soft rack to rotate so as to drive the tapered sucking tube to rotate; and the tapered sucking pipe rotates to pump air from the welding liquid; the air guide pipe of the laser welding device is heated through heating conductors in the air guide pipe; the welding liquid in the air guide pipe cannot be solidified toblock the air guide pipe after the air guide pipe is heated, and thus air can be smoothly transferred pump through the air guide pipe.

Description

technical field [0001] The invention belongs to the technical field of laser welding, in particular to a laser welding process for automobile bodies. Background technique [0002] Laser welding is to use high-energy laser pulses to locally heat materials in a small area. The energy of laser radiation diffuses into the interior of materials through heat conduction, and melts the welding materials to form a specific molten pool. It is a new type of welding method, mainly aimed at the welding of thin-walled materials and precision parts, and can realize spot welding, butt welding, lap welding, sealing welding, etc. With the development of society, people have higher and higher requirements for product quality, which makes the application of laser welding more and more widely. Now laser welding technology has been applied to the welding of automobile body, and laser welding has improved the quality of automobile body welding. , but the existing laser welding process of the auto...

AI Technical Summary

Problems solved by technology

With the development of society, people have higher and higher requirements for product quality, which makes the application of laser welding more and more widely. Now laser welding technology has been applied to the welding of automobile body, and laser welding has improved the quality of automobile body welding. , but the existing laser welding process of the automobile body makes it impossible to effectively remove the gas in the welding liquid during the laser welding of the automobile body, thus easily causing welding pore defects, affecting the quality of welding, and affecting the welding of the automobile body weld strength

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