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A kind of aluminum alloy composite foil and preparation method thereof

A composite foil and aluminum alloy technology, applied in metal rolling, metal rolling, metal processing equipment, etc., can solve the problems of small size, short service life, and inability to meet the needs of materials, and achieve mechanical properties and corrosion resistance Excellent, improve the preparation process technology, prevent the effect of penetration erosion

Active Publication Date: 2019-07-23
YINBANG CLAD MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, the anti-sagging performance of the aluminum alloy composite foil after brazing is not good, and the sag value of the aluminum alloy composite foil with a thickness of 0.08 mm is generally between 30 and 45 mm, which can no longer meet the market demand for materials, let alone Meeting future material thinning requirements
Moreover, the grain size of the existing aluminum alloy composite foil core material is generally small, usually less than 300 μm, and the infiltration of Si cannot be effectively prevented during the brazing process, resulting in a depth of erosion greater than 50%, and even through erosion locally. shorter lifespan

Method used

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  • A kind of aluminum alloy composite foil and preparation method thereof
  • A kind of aluminum alloy composite foil and preparation method thereof
  • A kind of aluminum alloy composite foil and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] 1. Prepare core material and skin material by smelting. The composition of core material and skin material is shown in Table 1. The raw materials of each element are respectively placed in a melting furnace for smelting to obtain core material and skin material respectively.

[0053] Table 1 Composition of core material and skin material

[0054]

[0055] The smelting conditions of the core material are as follows: according to the composition of the core material in Table 1, add the raw materials of each element into the melting furnace, the melting temperature is 765 ° C, electromagnetic stirring is performed twice, 10 minutes each time, and then refined at 755 ° C for 10 minutes , and then cast at a temperature of 710°C to obtain the required core material.

[0056] The smelting conditions of the skin material are: add the raw materials of each element into the melting furnace according to the composition of the skin material in Table 1, the melting temperature is...

Embodiment 2

[0068] 1. Prepare core material and skin material by smelting. The composition of core material and skin material is shown in Table 2. The raw materials of each element are respectively placed in a melting furnace for smelting to obtain core material and skin material respectively.

[0069] Table 2 Composition of core material and skin material

[0070]

[0071] The smelting conditions of the core material are: add the raw materials of each element into the melting furnace according to the composition of the core material in Table 2, the melting temperature is 755°C, electromagnetic stirring is performed twice, each time for 10 minutes, and then refined at 745°C for 10 minutes , and then cast at a temperature of 705°C to obtain the required core material.

[0072] The smelting conditions of the skin material are: add the raw materials of each element into the melting furnace according to the composition of the skin material in Table 2, the melting temperature is 750°C, elec...

Embodiment 3

[0084] 1. Prepare core material and skin material by smelting. The composition of core material and skin material is shown in Table 3. The raw materials of each element are respectively placed in a melting furnace for smelting to obtain core material and skin material respectively.

[0085] Table 3 Composition of core material and skin material

[0086]

[0087] The smelting conditions of the core material are as follows: according to the composition of the core material in Table 3, add the raw materials of each element into the melting furnace, the melting temperature is 750 ° C, electromagnetic stirring is performed twice, 10 minutes each time, and then refined at 740 ° C for 10 minutes , and then cast at a temperature of 700 ° C to obtain the required core material.

[0088] The smelting conditions of the skin material are: add the raw materials of each element into the melting furnace according to the composition of the skin material in Table 3, the melting temperature ...

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Abstract

The invention relates to aluminum alloy composite foil and a preparation method thereof. The aluminum alloy composite foil is composed of a core material and two layers of skin materials located on the upper and lower faces of the core material. The core material comprises the components of, by mass, no more than 0.4% of Fe, no more than 0.7% of Si, no more than 0.1% of Cu, 1.1%-1.6% of Mn, no more than 0.03% of Mg, 2.0%-2.5% of Zn, 0.05%-0.15% of Cr, 0.02%-0.08% of Ti, other elements and the balance Al, wherein the single mass percentage of the other elements is less than 0.05%, and the totalmass percentage of the other elements is less than 0.15%. Each skin material comprises the components of, by mass, no more than 0.3% of Fe, 7.5%-9.5% of Si, 0.25%-0.45% of Cu, no more than 0.1% of Mn, no more than 0.03% of Mg, no more than 0.1% of Zn, no more than 0.05% of Cr, no more than 0.05% of Ti, other elements and the balance Al, wherein the single mass percentage of the other elements isless than 0.05%, and the total mass percentage of the other elements is less than 0.15%. The prepared aluminum alloy foil has good mechanical performance and corrosion resistant performance, after soldering, the grain size of the core material is large, and the corrosion depth is small.

Description

technical field [0001] The invention relates to the field of material preparation, in particular to an aluminum alloy composite foil and a preparation method thereof. The aluminum alloy composite foil has high corrosion resistance and can be used for making condenser louver fins. Background technique [0002] Condensers are widely used in automobiles and household air-conditioning industries, and have developed rapidly in recent years, resulting in an increasing demand for aluminum alloy composite foils used to make condenser louver fins. The demand for this aluminum alloy composite foil in the market Rapid growth. [0003] The thickness of the aluminum alloy composite foil is relatively thin, usually 0.08-0.12mm. Moreover, driven by the current two themes of cost reduction and lightweight, thinning is a constant development trend. While thinning, the prepared aluminum alloy composite foil product also needs to maintain good welding performance, high brazing strength, exce...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21B1/40B21B1/38B21B47/02B21B47/00C22C21/10C22C21/02
CPCB21B1/38B21B1/40B21B47/00B21B47/02B21B2001/386C22C21/02C22C21/10
Inventor 曹琦吕金明段海龙
Owner YINBANG CLAD MATERIAL
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