Laser welding incident angle real-time regulating and controlling system based on temperature feedback and welding method

Abstract

The invention discloses a laser welding incident angle real-time regulating and controlling system based on temperature feedback and a welding method of the laser welding incident angle real-time regulating and controlling system. The welding system comprises a laser welding module, a welding control module, a clamper and an infrared temperature feedback module, wherein the clamper and the infrared temperature feedback module are arranged on the side wall of the laser welding module, one end of the clamper is fixed on the side wall of the laser welding module, and the other end of the clamperis connected with the infrared temperature feedback module; and the angle of the infrared temperature feedback module is adjusted through the clamping end of the clamper, so that an infrared thermometer can conveniently measure the temperature of a specific area. According to the laser welding incident angle real-time regulating and controlling system based on temperature feedback and the weldingmethod, the average temperature of the specific area can be detected in real time through the real-time regulating and controlling system; if the temperature is too high, the system correspondingly makes feedback, the incident angle of laser welding is adjusted, the incident distance of lasers in the material is increased, and the burnthrough phenomenon is effectively prevented. The system and method are particularly suitable for welding thin cover plate structures such as aluminum and a magnesium alloy.

Description

technical field [0001] The invention relates to the field of metal material processing, in particular to a welding system and a welding method based on a temperature feedback-based laser incident angle of a cover plate structure that can be regulated in real time. Background technique [0002] The invention is mainly aimed at some specific structures. Due to the different thickness of the board, the thermal conductivity characteristics are also different in different positions. At the same time, the melting point of the material is relatively low, and the board is relatively thin. Some alloys that are particularly sensitive to laser heat input, such as Aluminum alloys and magnesium alloys are prone to burn-through when high-energy-density welding such as laser welding is used. [0003] A large number of tests have shown that when the welding temperature in a specific area exceeds a certain value, welding defects such as burn-through will occur, and because the welding parame...

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Problems solved by technology

[0002] The invention is mainly aimed at some specific structures. Due to the different thickness of the board, the thermal conductivity characteristics are also different in different positions. At the same time, the melting point of the material is relatively low, and the board is relatively thin. Some alloys that are particularly sensitive to laser heat input, such as Aluminum alloys and magnesium alloys are prone to burn-through when high-energy-density welding such as laser welding is used

[0003] A large number of tests have shown that when the welding temperature in a specific area exceeds a certain value, welding defects such as burn-through will occur, and because the welding parameters are set, they cannot be changed at any time when they encounter high temperatures during the welding process, so it is easy to cause burn-through and so on

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