A copper laser welding device and method

Abstract

The invention discloses a red copper laser welding device. The device comprises a control system, a laser, a laser welding head, a pre-heating mechanism and a temperature control mechanism. A laser welding mechanism comprises the laser and the laser welding head. The pre-heating mechanism comprises a heating insulation tank, insulation bricks are arranged in the heating insulation tank, and a clamp is arranged on the insulation bricks. Dry burning heating tubes are arranged on the two side walls in the heating insulation tank, and a cover plate and a pulling plate are arranged above the heating insulation tank. A motor I and a motor II are arranged on the two sides of the heating insulation tank. The motor I drives the cover plate to move along the axial direction of a tank body through the action of a gear I and a rack I. The motor II drives the pulling plate to move along the direction vertical to the axial direction of the tank body through the action of a gear II and a rack II. The laser, the motor I, the motor II, the heating insulation tank and an infrared thermometer are in line connection with the control system respectively. By means of the device, the red copper plate laser welding energy absorptivity is improved, the work efficiency is improved, weld zones are attractive, excess weld metal is absent, additional processing is not needed basically, and the process and the cost are saved.

Description

technical field [0001] The invention is a red copper laser welding device and method, which is used in the technical field of laser welding of red copper plates with a thickness less than 4mm to obtain good welded joint quality. Background technique [0002] Laser welding has become a new type of welding process due to its excellent welding quality. However, due to the high reflectivity of the surface of the copper sheet and the extremely fast heat dissipation, the laser welding process often has problems such as discontinuous welds, poor surface quality, and serious weld inclusions. However, other welding methods such as argon tungsten arc welding have problems such as severe welding deformation caused by excessive welding heat input. Therefore, there is an urgent need to develop laser welding equipment for copper plates that can achieve excellent welding quality and high efficiency. Contents of the invention [0003] The purpose of the invention is to provide a red cop...

AI Technical Summary

Problems solved by technology

However, due to the high reflectivity of the surface of the copper plate and the extremely fast heat dissipation, the laser welding process often has problems such as discontinuous welds, poor surface quality, and serious weld inclusions.

However, other welding methods such as argon tungsten arc welding have problems such as severe welding deformation caused by excessive welding heat input.

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