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Synchronous hot-pressing-laser welding resistance hot pressing device

A technology of hot pressing device and laser welding, which is applied in the direction of resistance welding equipment, welding equipment, metal processing equipment, etc., can solve the problems that high-efficiency welding effect cannot be achieved, and preheating and pressure cannot be applied at the same time, so as to reduce air holes and improve Absorption rate, effect of reducing laser power

Inactive Publication Date: 2017-03-22
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Research has found that asynchronous laser-resistance welding cannot achieve high-efficiency welding because preheating and pressure cannot be applied at the same time

Method used

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  • Synchronous hot-pressing-laser welding resistance hot pressing device
  • Synchronous hot-pressing-laser welding resistance hot pressing device
  • Synchronous hot-pressing-laser welding resistance hot pressing device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Such as Figure 2-8 As shown, a resistance thermocompression device for synchronous thermocompression-laser welding of the present invention is mainly used in single-sided welding, including a one-way 380V power supply, control equipment, series switch, welding resistance transformer, welding workbench, The pressurizing mechanism, the electrode arm group and the waterway module, the power supply, the series switch, the welding resistance transformer and the electrode arm group are electrically connected in sequence to form a welding circuit, and one control terminal of the control device is connected to the series switch The input terminal is connected, the series switch adopts a thyristor, the control device controls the conduction angle of the thyristor to adjust the welding current, and the primary end of the welding resistance transformer is adjusted by the series changer to determine the welding resistance transformer ratio.

[0032]The welding workbench includes ...

Embodiment 2

[0037] Such as Figure 9-10 As shown, the difference between this embodiment and Embodiment 1 is that the setting of the electrode arm and the connection of the welding resistance transformer are different. A resistance hot pressing device for synchronous hot pressing and laser welding of the present invention is mainly used for double-sided welding, including One-way 380V power supply, control equipment, series switch, welding resistance transformer, welding workbench, pressurizing mechanism, electrode arm group and waterway module, the power input terminal is connected with a switch for controlling on-off. The connection of the electrode arm of this embodiment is different from Embodiment 1. During double-sided welding in this embodiment, the left electrode arm of the resistance welding head 3, pressurized cylinder 1 and guide sleeve 2 on the left is translated to the left In the new position on the side, the right electrode arm is removed and decomposed, and the right resis...

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Abstract

The invention provides a synchronous hot-pressing-laser welding resistance hot pressing device which comprises a power source, control equipment, a level switch, a resistance welding transformer, a welding workbench, a pressurization mechanism and an electrode arm unit, wherein the power source, the level switch, the resistance welding transformer and the electrode arm unit are sequentially and electrically connected to form a welding loop. The control equipment controls the pressurization mechanism to apply pressure to a weld test piece through the electrode arm unit. The welding workbench comprises a bottom plate, a power mechanism and a sliding table mechanism. The power mechanism drives the sliding table mechanism to drive the weld test piece to move back and forth. According to the synchronous hot-pressing-laser welding resistance hot pressing device, preheating and pressurization of a welding circuit system are integrated, and the defect that preheating and pressurization cannot be achieved simultaneously during non-synchronous laser-resistance welding is overcome, so that the absorption rate of metal materials to lasers is increased, the needed laser power is reduced, crystallization conditions of weld joints are improved, defects such as pores and hot cracks are reduced, and the synchronous hot-pressing-laser welding resistance hot pressing device can be widely applied to materials with high reflection rate, such as aluminum and magnesium.

Description

technical field [0001] The invention relates to the field of welding technology, in particular to a resistance hot pressing device for synchronous hot pressing and laser welding. Background technique [0002] Laser welding technology has the characteristics of high speed, low deformation and flexibility, and is one of the welding methods with the most development potential. However, many factors such as laser power level, process control (focus fluctuation, beam centering, etc.), assembly conditions (assembly gap, misalignment, etc.), and high reflectivity of materials limit the scope of its practical engineering application. Therefore, it is hoped that the hybrid welding technology that uses the welding characteristics of other methods to make up for the shortcomings of laser welding has become the research focus of advanced countries. At present, there are mainly: laser-arc hybrid welding, laser-high frequency induction welding, laser-friction stir welding Among them, the...

Claims

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Application Information

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IPC IPC(8): B23K11/02B23K11/36
CPCB23K11/02B23K11/36
Inventor 宋敏霞陆怡王辉刘麟
Owner CHANGZHOU UNIV
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