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Method for welding foam aluminum sandwich composite plate

A sandwich composite panel and welding method technology, which is applied in the field of aluminum plate welding, can solve the problems of large influence of environmental factors, easy aging of adhesives, complicated process, etc., and achieve low labor intensity, low welding cost and good environmental adaptability Effect

Inactive Publication Date: 2012-07-25
GUANGZHOU UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among them, resin bonding materials are greatly affected by environmental factors, and have the disadvantage that the adhesive is easy to age.
Brazing method, such as the method disclosed in Chinese patent CN2000810018812.3, and the secondary foaming method, etc., these methods are complicated in process and high in cost

Method used

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  • Method for welding foam aluminum sandwich composite plate
  • Method for welding foam aluminum sandwich composite plate
  • Method for welding foam aluminum sandwich composite plate

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Experimental program
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Effect test

Embodiment Construction

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments, but does not impose any limitation on the present invention. A welding method for aluminum foam sandwich composite panels, comprising the following steps:

[0028] 1) Cut two aluminum plates with a size of 200mmx50mmx5mm as the panel 2, and draw one side of the panel 2 with a 60# drawing wheel 6 to form a uniform rough surface, see figure 2 and image 3 ; Then use the surface milling method to remove the oxide film on the other side of the panel 2; then wipe the milling surface with clean cotton yarn dipped in absolute alcohol, and after drying, apply a 0.2mm thick conductive paste 5; finally process The two good panels 2 are fixed on the conductive fixture after cleaning and drying, and fixed to ensure that the surface coated with the conductive paste 5 is closely attached to the conductive fixture;

[0029] 2) Cut the block aluminum foam into a size ...

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Abstract

The invention provides a method for welding a foam aluminum sandwich composite plate, which belongs to the technical field of welding of aluminum plates. The method includes steps: (1) fixing two face plates of the sandwich composite plate on electrodes; (2) placing a foam aluminum sandwich between the two face plates and attaching welded surfaces of the foam aluminum sandwich by means of exerting certain pressure; and (3) leading current to pass through the electrodes and flow through the two welded face plates and the welded foam aluminum sandwich, heating welded areas by resistance heat among the sandwich and the face plates, keeping the pressure and completing welding. The method for welding the foam aluminum sandwich composite plate has the advantages that a special material is omitted, the obtained composite plate is stable in performance, fine in environmental adaptation and low in welding cost, welding and heating time is short, heat is concentrated, a heat affected zone is small, performances of a base material are stable, follow-up heat treatment working procedures are omitted, and the method is simple in operation and convenient in implementation, labor intensity is low, and automation can be easily realized. The method can be widely popularized and applied.

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 board is made by adding additives to pure aluminum or aluminum alloy and undergoes a foaming process, which has both metal and air 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] At present, the known fixed connection methods between the aluminum foam sandwich core and the panel include resin bonding method, brazing method, secondary foaming method and the like. Among them, resin bonding materials are grea...

Claims

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Application Information

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IPC IPC(8): B23K11/00B23K11/34B23K11/30
Inventor 邓武
Owner GUANGZHOU UNIVERSITY
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