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A kind of welding method of aluminum foam plate

A foamed aluminum plate and welding method technology, applied in the direction of welding medium, welding equipment, welding/cutting medium/material, etc., can solve the problems of uneven strength of foamed aluminum plate, inability to guarantee the strength of solder joints, and affect the performance of products, etc., to achieve The welding method is simple, the stability of high pressure resistance is improved, and the effect of welding is smooth

Active Publication Date: 2018-03-13
颍上珂米乐新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The foamed aluminum board has good comprehensive performance, but because the foamed aluminum board has a porous structure, its welding is more difficult, and the strength of the solder joints is often not guaranteed, resulting in uneven strength of the foamed aluminum board during use, which affects the performance of the product

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] A welding method for foamed aluminum plates, comprising the following steps:

[0019] (1) Clean the surface of the aluminum foam board to be welded with acid solution, which is made of the following raw materials by weight: 6.5 parts of capric acid, 7 parts of lauric acid, 0.8 parts of oxalic acid, 5 parts of phthalic acid, 4 parts of ethanol parts, 25 parts of water;

[0020] (2) Rinse the foamed aluminum plate treated in step (1) with deionized water under nitrogen protection, then dry it at 40-45°C, and then activate the surface of the foamed aluminum plate to be welded with an activation solution for 18 minutes. The activation solution is made of the following raw materials by weight: 2.5 parts of benzenesulfonic acid, 4 parts of sodium hexametaphosphate, 1.2 parts of black medicine, and 20 parts of water;

[0021] (3) Brazing is carried out under the protection of nitrogen. The brazing material is made of the following components by weight: Si 5.6%, Mn4.5%, Zn 12%...

Embodiment 2

[0026] A welding method for foamed aluminum plates, comprising the following steps:

[0027] (1) Clean the surface of the aluminum foam board to be welded with acid solution, which is made of the following raw materials by weight: 6.5 parts of capric acid, 7 parts of lauric acid, 0.8 parts of oxalic acid, 5 parts of phthalic acid, 4 parts of ethanol parts, 25 parts of water;

[0028] (2) Rinse the foamed aluminum plate treated in step (1) with deionized water under nitrogen protection, then dry it at 42°C, and then activate the surface of the foamed aluminum plate to be welded with an activation solution for 15-20 minutes, The activation solution is made of the following raw materials by weight: 2.5 parts of benzenesulfonic acid, 4 parts of sodium hexametaphosphate, 1.2 parts of black medicine, and 20 parts of water;

[0029] (3) Brazing is carried out under the protection of nitrogen. The brazing material is made of the following components by weight: Si 5.6%, Mn4.5%, Zn 12%...

Embodiment 3

[0034] A welding method for foamed aluminum plates, comprising the following steps:

[0035] (1) Clean the surface of the aluminum foam board to be welded with acid solution, which is made of the following raw materials by weight: 6.5 parts of capric acid, 7 parts of lauric acid, 0.8 parts of oxalic acid, 5 parts of phthalic acid, 4 parts of ethanol parts, 25 parts of water;

[0036] (2) Rinse the foamed aluminum plate treated in step (1) with deionized water under nitrogen protection, then dry it at 40-45°C, and then activate the surface of the foamed aluminum plate that needs to be welded with an activation solution for 15- 20 minutes, the activation solution is made of the following raw materials by weight: 2.5 parts of benzenesulfonic acid, 4 parts of sodium hexametaphosphate, 1.2 parts of black medicine, and 20 parts of water;

[0037] (3) Brazing is carried out under the protection of nitrogen. The brazing material is made of the following components by weight: Si 5.75%...

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Abstract

The invention relates to a welding method for foamed aluminum boards, which comprises the following steps: (1), cleaning the surface to be welded of a foamed aluminum board with an acid solution; (2), flushing the foamed aluminum board treated in the step (1) with deionized water under the protection of nitrogen, heating the flushed foamed aluminum board at 40 to 45 DEG C, and conducting activating treatment on the surface to be welded of the heated foamed aluminum board with an activating fluid for 15 to 20 min; (3), carrying out brazing treatment under the protection of nitrogen; and (4), treating the brazed part of the welded foamed aluminum board under the pressure of 30 to 32 MPa, wherein the environment temperature in the step (4) is 580 to 600 DEG C. As the surface to be welded of the foamed aluminum board is treated with various treating fluids before welding to remove impurities on the surface to be welded of the foamed aluminum board and activate metal on the surface to be welded of the foamed aluminum board, the welding uniformity and the welding strength during welding are improved.

Description

technical field [0001] The invention belongs to the field of metal treatment, and in particular relates to a welding method for foamed aluminum plates. Background technique [0002] Aluminum foam is made by adding additives to pure aluminum or aluminum alloy and undergoing a foaming process, which has both metal and bubble characteristics. It has low density, high impact absorption ability, high temperature resistance, strong fire resistance, corrosion resistance, sound insulation and noise reduction, low thermal conductivity, high electromagnetic shielding, strong weather resistance, filtering ability, easy processing, easy installation, and high forming accuracy , Can carry out surface coating. [0003] The aluminum foam board has good comprehensive performance, but because the aluminum foam board has a porous structure, its welding is more difficult, and the strength of the solder joints is often not guaranteed, resulting in uneven strength of the aluminum foam board dur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K1/20B23K1/19B23K35/28
CPCB23K1/19B23K1/20B23K1/206B23K35/288
Inventor 韩夏
Owner 颍上珂米乐新材料科技有限公司
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