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Copper aluminum welding method

A copper-aluminum and aluminum sheet technology, applied in welding equipment, welding/welding/cutting items, manufacturing tools, etc., can solve the problems of high cost and complex technology, and achieve the effect of convenient welding, uniform connection and high elongation

Inactive Publication Date: 2009-03-25
ZHEJIANG KANGSHENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention mainly solves the technical problems existing in the prior art such as complex technology, high cost, and the need for a third metal to be connected to complete copper-aluminum welding, and provides a copper-aluminum alloy with simple operation, low cost, fast welding speed and firm welding. welding method

Method used

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  • Copper aluminum welding method

Examples

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Effect test

Embodiment 1

[0019] Select an aluminum sheet with a thickness of 1mm and a copper sheet with a thickness of 1mm for welding, adjust the temperature of welding clamp A to 400°C by electric heating, adjust the temperature of welding clamp B to 700°C by electric heating, and weld Clamp A is in contact with the aluminum sheet, and welding tongs B is in contact with the copper sheet. Immediately after contact, push the welding tongs A and B to superimpose the aluminum sheet and the copper sheet. After the aluminum sheet and the copper sheet are in contact for 3 seconds, remove the welding tongs A With welding pliers B, the copper sheet and the aluminum sheet are firmly welded together.

Embodiment 2

[0021] Select an aluminum sheet with a thickness of 3mm and a copper sheet with a thickness of 5mm for welding. Adjust the temperature of welding tongs A to 450°C and the temperature of welding tongs B to 750°C. After the contact, immediately push welding pliers A and welding pliers B to superimpose the aluminum sheet and copper sheet. After the aluminum sheet is in contact with the copper sheet for 4 seconds, remove the welding pliers A and welding pliers B. The copper sheet and the aluminum sheet are firmly connected. welded together.

Embodiment 3

[0023] Select an aluminum sheet with a thickness of 7mm and a copper sheet with a thickness of 8mm for welding. Adjust the temperature of welding tongs A to 500°C and the temperature of welding tongs B to 800°C. After contact, immediately push welding pliers A and welding pliers B to superimpose the aluminum sheet and copper sheet. After the aluminum sheet and copper sheet are in contact for 5 seconds, remove welding pliers A and welding pliers B. The copper sheet and aluminum sheet are firmly connected. welded together.

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Abstract

The invention relates to a welding method, in particular to a copper aluminum welding method. The invention mainly solves the problems in the prior art that the technology is complex, the cost is high, and a third metal is required as a connecting metal to realize the copper aluminum welding. And the invention provides a copper aluminum welding method of simple operation, low cost, fast and firm welding. The technique proposal of the invention is as follows: the steps of the copper aluminum welding method comprise: the contacted copper and aluminum is respectively heated by a heating device simultaneously at different temperature, with the temperature applied to the copper higher than that to the aluminum; when the heating time is over 0.5 seconds, the copper aluminum welding is finished.

Description

technical field [0001] The invention relates to a welding method, in particular to a copper-aluminum welding method. Background technique [0002] Copper and aluminum often cannot be directly welded, because the melting points of copper and aluminum differ by about 400°C. Direct welding will destroy the crystal phase of aluminum, resulting in increased brittleness and reduced ductility of aluminum. The general treatment method is to add a third welding metal or alloy between the copper and aluminum, and the copper passes through the third metal or alloy to weld the copper and aluminum together. [0003] For example, a Chinese publication number is CN101074130 "Aluminum Copper Dissimilar Metal Welding Method". The present invention relates to a dissimilar metal welding method, in particular to an aluminum copper dissimilar metal welding method. In the method, aluminum metal and copper metal are respectively welded to two ends of a transition metal, and the transition metal i...

Claims

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Application Information

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IPC IPC(8): B23K31/02B23K103/18
Inventor 陈汉康韩建文袁金慧王伊娜朱建娟田思光
Owner ZHEJIANG KANGSHENG CO LTD
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