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Method of welding foamed aluminium sandwich composite board

A sandwich composite board and foamed aluminum board technology, applied in the field of aluminum board welding, can solve the problems of complex process, low preparation efficiency and high cost, and achieve the effect of high bonding strength, good mechanical properties and corrosion resistance

Inactive Publication Date: 2009-02-25
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the disadvantages of low production efficiency, complex process and high cost of aluminum foam sandwich composite materials in the prior art, the present invention discloses a welding method for aluminum foam sandwich composite panels with high production efficiency, simple process and low cost. for:

Method used

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  • Method of welding foamed aluminium sandwich composite board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The first step: use wire cutting to process the aluminum foam board 3 of any thickness into a flat plate with a length of ≥500mm and a width of ≥100mm, and then clean and dry the aluminum foam board 3 and the aluminum board 2 with detergent with a volume concentration of 2% to 5%. Dry. Cut to the same size. Wash and dry the cuboid aluminum foam board 3 of the same size and the aluminum board 2 with a thickness ≥ 1 mm, and clean the surface with acid and lye to remove rust and oil. The mass concentration of 60 ° C is 8% NaOH solution, and then washed with water and then the mass concentration is 35% HNO 3 solution, then rinse with clean water, dry and then rinse with acetone, and finally dry for later use. The concentration of NaOH solution can be 5%, 6%, 8%, HNO 3 The concentration of the solution can be 30%, 33%, 40%.

[0026] The second step: ZnCl at room temperature 2 Make a saturated solution with water, and apply it evenly on the surface of the treated foam al...

Embodiment 2

[0031] The first step: use wire cutting to process the foamed aluminum plate with a thickness of 15mm and a porosity of 75% into a flat plate with a width of 1120mm and a width of 600mm, and then clean the foamed aluminum plate and the aluminum plate with a volume concentration of 2% detergent, drying. Cut to the same size. Wash and dry the cuboid aluminum foam board and the aluminum board with a thickness of 2mm, and clean the surface with acid and lye to remove rust and oil. Wash with 5% NaOH solution, then wash with water and then use a mass concentration of 30% HNO 3 solution, then rinse with clean water, dry and then rinse with acetone, and finally dry for later use.

[0032] The second step: ZnCl at room temperature 2 Make a saturated solution with water, and apply it evenly on the treated foam aluminum board and the surface of the aluminum board;

[0033] Step 3: Put the solder on the treated foam aluminum plate and roll the treated aluminum plate into a pair of rol...

Embodiment 3

[0037]The first step: use wire cutting to process the foamed aluminum plate with a thickness of 20mm and a porosity of 90% into a flat plate with a width of 1120mm and 2100mm, and then clean the foamed aluminum plate and the aluminum plate with a volume concentration of 5% detergent, drying. Cut to the same size. Wash and dry the cuboid aluminum foam board and the aluminum board with a thickness of 1.5mm of the same size, and clean the surface with acid and lye to remove rust and oil. The concentration is 8% NaOH solution to clean, then wash with water and then use the mass concentration of 40% HNO 3 solution, then rinse with clean water, dry and then rinse with acetone, and finally dry for later use.

[0038] The second step: ZnCl at room temperature 2 Make a saturated solution with water, and apply it evenly on the treated foam aluminum board and the surface of the aluminum board;

[0039] Step 3: Put the solder on the processed aluminum foam plate and cover it to form a...

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Abstract

The invention pertains to the field of aluminum foam welding, and discloses a preparation method to produce a composite plate with aluminum foam filler by weld-forming technique. The preparation steps are that: cleaned and dried foamed aluminum boards and aluminum boards are treated, solder is put on the treated foamed aluminum boards, and then the aluminum boards are put on the solder to be sent into a pair of roll wheel pairs to be roll compacted; the foamed aluminum boards and the aluminum boards can be roll compacted by the roll wheel pairs with the motion of a roll wheel. The solder is low melting point aluminum base alloy and the diameter of the roll wheel is more than or equal to 200mm. Oxyacetylene or lpg frame is adopted to heat the aluminum foam at the front edge of the roll wheel roll compacting and the solder layer between the aluminum boards. When the solder is melted and spread, the roll wheel pair is started, the rotational speed of the roll wheel pair is adjusted to be in accordance with the speed of heating and melting the solder and the foamed aluminum boards and aluminum boards are lightly roll compacted to ensure the two adhere tightly; after cooling, the integral body of the foamed aluminum boards and aluminum boards are turned, solder is put on the other surface of the foamed aluminum boards, aluminum boards are put on the solder and the steps are repeated to obtain the weld-formed composite plate with aluminum foam filler.

Description

technical field [0001] The invention relates to the field of aluminum plate welding, in particular to a welding forming method in which a foamed aluminum plate is used as a core layer. Background technique [0002] Aluminum foam is a new type of aluminum-based metal material containing a large number of uniform closed pores. Due to its unique physical structure, it has many excellent properties, such as light weight (ρ<1), high specific strength and specific stiffness, and sound insulation. , heat insulation, flame retardant, damping, impact energy absorption and electromagnetic shielding and other characteristics, realize the lightweight and multifunctional structural materials, so it has a wide range of application prospects. Especially in high-tech fields such as aerospace, high-porosity aluminum foam as an ultra-light material has become a frontier hotspot in international material research. At home and abroad, a lot of research work has been carried out on the prepa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K1/00B23K1/20B23K35/28C23G1/22C23G1/12B23K103/10
Inventor 何德坪王辉何思渊童道池
Owner SOUTHEAST UNIV
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