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Welding shaping method for foamed aluminium board

A foamed aluminum plate, welding forming technology, applied in the field of aluminum plate welding, can solve the problems of high cost, complicated process, low production efficiency of large-sized foamed aluminum, etc., achieve good mechanical properties and corrosion resistance, and increase the effect of the bonding interface

Inactive Publication Date: 2009-05-27
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 large-sized foamed aluminum in the prior art, the present invention discloses a method for welding and forming a foamed aluminum plate with high production efficiency, simple process and low cost. The steps are as follows:

Method used

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  • Welding shaping method for foamed aluminium board
  • Welding shaping method for foamed aluminium board
  • Welding shaping method for foamed aluminium board

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The first step: use wire cutting to process the aluminum foam board into regular cubes or cuboids of uniform size. Add 2 to 5% volume ratio of detergent in clean water to clean the processed foamed aluminum plate, then rinse it with clean water and dry it. Use an electric band saw to make a V-shaped bevel on the aluminum foam board. It is required that the opposite sides be convex V-shaped and the other side be concave V-shaped. Derust and degrease the groove of the foamed aluminum plate to be welded. The basic process is to place the main body of the groove of the foamed aluminum to be welded in a 5-8% NaOH solution at 55-65°C for 7 minutes, and then take it out and completely wash it with hot water. After washing, put the concentration of about 30 ~ 40% HNO 3 The solution was neutralized for about 1.5 minutes, then washed with water, dried with acetone, and finally dried in an oven at 130°C for later use. The concentration of NaOH solution can be 5%, 6%, 8%, the tem...

Embodiment 2

[0033] The first step: use wire cutting to process the aluminum foam board into a cube with a side length of 150mm and a thickness of 20mm. Add 2% volume ratio of detergent to clean water to clean the processed square aluminum foam board, then rinse it with clean water and dry it. Use an electric band saw to make a V-shaped bevel on the aluminum foam board. It is required that the opposite sides be convex V-shaped and the other side be concave V-shaped. Derust and degrease the groove of the foamed aluminum plate to be welded. The basic process is to first place the body of the foamed aluminum groove to be welded in a 5% NaOH solution at about 60°C for 7 minutes, take it out and rinse it with hot water before putting it in place. The input concentration is about 30% HNO 3 The solution was neutralized for about 1.5 minutes, then washed with water, dried with acetone, and finally dried in an oven at 130°C for later use.

[0034] The second step: chemically pure ZnCl 2 Add wate...

Embodiment 3

[0039] The first step: use wire cutting to process two foamed aluminum plates with different hole diameters into cubes with a side length of 180mm and a thickness of 30mm. Add 3.5% volume ratio of detergent into clean water to clean the processed square aluminum foam board, then rinse it with clean water and dry it. Use an electric band saw to make a V-shaped bevel on the aluminum foam board. It is required that the opposite sides be convex V-shaped and the other side be concave V-shaped. Derust and degrease the groove of the foamed aluminum plate to be welded. The basic process is to place the body of the foamed aluminum groove to be welded in a 6% NaOH solution at about 60°C for 7 minutes, take it out and rinse it completely with hot water, and then put it away. The input concentration is about 35% HNO 3 The solution was neutralized for about 1.5 minutes, then washed with water, dried with acetone, and finally dried in an oven at 130°C for later use.

[0040] The second st...

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Abstract

The invention discloses a method for preparing foamed aluminum plates using weld-forming process, belonging to the technical field of foamed aluminum welding, which comprises the following steps: making a convex V-shaped bevel on one side of a cleaned and dried square foamed aluminum plate; making a concave V-shaped bevel fitted with the convex V-shaped bevel at the corresponding position on the other side; processing the area to be welded; vertically placing the processed foamed aluminum plates in a welding unit; the convex V-shaped bevel of one foamed aluminum plate is opposite to the concave V-shaped bevel of the other foamed aluminum plate; placing the low melting point aluminum base alloy solder in the concave surface of the convex V-shaped bevel of the foamed aluminum plate at the lower part, and the convex V-shaped bevel of the other foamed aluminum plate to be welded is arranged 3 to 5 mm away; heating to 470 to 485 DEG C, and pressing the foamed aluminum plate at the upper part, so as to enable the V-shaped bevels of the two foamed aluminum plate to be tightly contacted; cooling to ambient temperature; clearing the solder spilled out of the bevels to obtain a structural component for welding; repeating the steps to butt-weld a plurality of structural components into the foamed aluminum plate with specified size.

Description

technical field [0001] The invention relates to the field of aluminum plate welding, in particular to a tailor welding forming method for large-size foamed aluminum plates. 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 present, the powder metallurgy method used at home and abroad to prepare larger-sized...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K1/00B23K1/20B23K35/28
Inventor 何德坪王辉何思渊
Owner SOUTHEAST UNIV
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