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Core material, aluminum alloy composite plate containing the core material, and their preparation method and use

A composite plate and aluminum alloy technology, applied in chemical instruments and methods, metal layered products, layered products, etc., can solve the problems of undiscovered aluminum alloy composite plates, achieve high strength, good corrosion resistance, good The effect of brazeability

Active Publication Date: 2019-02-22
GRANGES ALUMINUM SHANGHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] In the prior art, there have been no relevant reports on the large-scale use of these waste materials as raw materials for the preparation of aluminum alloy composite panels.

Method used

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  • Core material, aluminum alloy composite plate containing the core material, and their preparation method and use
  • Core material, aluminum alloy composite plate containing the core material, and their preparation method and use
  • Core material, aluminum alloy composite plate containing the core material, and their preparation method and use

Examples

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preparation example Construction

[0079] The preparation method of the aluminum alloy composite plate of the present invention comprises the following steps:

[0080] A composite layer is prepared, then the composite layer is composited and welded with the core material of the present invention, and then preheated at a temperature of 420-520° C. for 5-20 hours, and then subjected to hot rolling, cold rolling and finished annealing treatment, That is, the aluminum alloy composite plate of the present invention is obtained. Its total thickness is not more than 2.0mm, preferably not more than 1.5mm, more preferably not more than 1.2mm, which meets the thinning requirement.

[0081] The preparation of the composite layer includes the preparation of the brazing layer and / or the preparation of the water contact layer.

[0082] The preparation of the brazing layer refers to milling the Al-Si alloy ingot at a temperature of 450-520°C, preferably 450°C-510°C, 450°C-500°C, 460°C-520°C, 460°C -500°C, 480°C-520°C, or 48...

Embodiment 1

[0109] Example 1 Preparation of core materials A1 and A2

[0110] Use water-cooled semi-continuous casting method (DC casting) to prepare core materials A1 and A2, in which the aluminum scraps from our workshop are used as raw materials, and the smelting process is as follows:

[0111]According to the ratio of the added amount of aluminum scrap (also known as scrap consumption) to 35% of the total weight of the raw materials, the aluminum scrap and industrial pure aluminum ingots are added to the smelting furnace for melting. Sampling and analysis, adding alloy elements and then standing, stirring, refining, and slag removal, after adjusting the content of each element, poured into the stationary furnace, stirring, refining, and slag removal again, and finally adding Al-Ti-B grain refiner and degassing online. , After filtering, enter the casting machine and cast into core material ingots A1 and A2 (referred to as core materials A1 and A2).

[0112] Table 1 shows the alloy ...

Embodiment 2

[0119] The preparation of embodiment 2 brazing layer C

[0120] After milling the commercially available AA 4343 alloy ingot according to the method of Example 1, it was kept in a heating furnace at 450 ° C for 5 hours, and then rolled into a 45mm brazing layer C on a hot rolling mill, which was used as a composite layer. The alloy composition is shown in Table 2.

[0121] Table 2

[0122]

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Abstract

The invention discloses a core material, an aluminum alloy composite plate comprising the same, and a preparation method and application of the core material and the aluminum alloy composite plate comprising the same. The preparation method of the core material is characterized in that a waste aluminum material is taken as the raw material for preparing the ingot casting of the core material, the core material is subjected to uniform heating treatment to control the size and distribution density of dispersed phase particles, so that a target product is endowed with a high strength, a good solderability and a good melting erosion resistance, and the aluminum alloy composite plate comprising the core material can be applied to preparation of automobile parts such as main boards or side boards of heat exchangers, radiators, condensers, evaporators, oil coolers and intermediate coolers.

Description

technical field [0001] The present invention relates to a core material, an aluminum alloy composite sheet comprising the core material, and their preparation methods and uses. In particular, the present invention relates to a core material having at least two layers (eg, two layers, three layers or more) Aluminium alloy composite plates comprising the core material, and their preparation methods and uses. The aluminum alloy composite sheet is particularly suitable for use as auto parts, such as the main board or side plate of a heat exchanger and a radiator, and is a high-strength aluminum alloy composite sheet for brazing. Background technique [0002] Due to its light weight and high thermal conductivity, aluminum alloys are widely used in auto parts, such as the main plates or side plates of heat exchangers, radiators, condensers, evaporators, oil coolers, and intercoolers. These automotive parts are mainly prepared by brazing methods including vacuum brazing and contro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B15/01
CPCB23P15/00C22C21/00C22C21/02C22C21/14C22C21/16C22C21/18C22F1/04C22F1/043C22F1/057
Inventor 高凤华杜妮燕
Owner GRANGES ALUMINUM SHANGHAI CO LTD
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