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A kind of preparation method of aluminum foil for automobile radiator

A technology of automobile radiator and aluminum foil, which is applied in the field of aluminum alloy casting to achieve the effect of improving casting structure, improving intermediate segregation and porosity, and reducing emulsion residue

Active Publication Date: 2021-08-03
广西润泰铝业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, the 7072 alloy is mainly produced by semi-continuous casting + hot rolling, and it is mostly used as the cladding layer of composite materials for automobile radiators. There are few preparation methods for the production of 7072 alloys directly as finished products of heat dissipation fins for automobile radiators. to report

Method used

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  • A kind of preparation method of aluminum foil for automobile radiator
  • A kind of preparation method of aluminum foil for automobile radiator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] The chemical composition and preparation method of a 0.099mm thick "H22" state 7072 alloy aluminum foil for automobile radiators.

[0043] S1. Preparation of aluminum melt:

[0044] A radiating fin for a 7072 alloy automobile radiator, the percentage content of alloying elements is: Si: 0.05%; Fe: 0.35%; Cu: 0.05; Zn: 1.0%; Ti: 0.025%; other individual impurities ≤ 0.03%, total ≤0.15%, the rest is Al.

[0045] In order to ensure the chemical composition of the 7072 alloy, the aluminum melt is prepared by feeding electrolytic aluminum liquid with Fe ≤ 0.16%, Si ≤ 0.04% and aluminum ingot with aluminum content ≥ 99.7%, and no waste is added. In this way, the element Si content in the 7072 alloy is guaranteed to be in the range of 0.05-0.1%. The Fe element is added in the form of aluminum-iron master alloy or 90% iron powder, and the Zn element is added in the form of zinc ingot.

[0046] The electrolytic aluminum liquid with Fe≤0.16% and Si≤0.04% is pre-refined in the ...

Embodiment 2

[0061] A chemical composition and preparation method of 0.12mm thick "O" state 7072 alloy aluminum foil for automobile radiators.

[0062] S1. A heat dissipation fin for a 7072 alloy automobile radiator, the percentage content of alloy elements is: Si: 0.05%; Fe: 0.45%; Cu: 0.05; Zn: 1.0%; Ti: 0.020%; other single impurities ≤ 0.03% , the total ≤0.15%, and the rest is Al.

[0063] All the other are with embodiment 1;

[0064] S2. During continuous rolling, the specific pass distribution is: 19-9.0-7.0mm, and the rest are the same as in Example 1.

[0065] S3. The homogenization annealing process is the same as in Example 1.

[0066] S4. The distribution scheme of the cold rolling pass is: 7.0mm→4.2mm→2.5mm→1.5mm→0.9mm→0.53mm→0.31mm→edge trimming→0.18mm→0.12mm→slitting. The total deformation of the billet in the cold rolling step was 98.3%.

[0067] Middle pass processing rate ≥ 40%, finished product pass processing rate 33%, all the other are the same as embodiment 1.

[...

Embodiment 3

[0071] The chemical composition and preparation method of a 0.095mm thick "H22" state 7072 alloy aluminum foil for automobile radiators.

[0072] S1. Preparation of aluminum melt:

[0073] A radiating fin for a 7072 alloy automobile radiator, the percentage content of alloying elements is: Si: 0.08%; Fe: 0.30%; Cu: 0.08; Zn: 0.9%; Ti: 0.020%; other individual impurities ≤ 0.03%, total ≤0.15%, the rest is Al.

[0074] In order to ensure the chemical composition of the 7072 alloy, the aluminum melt is prepared by feeding electrolytic aluminum liquid with Fe ≤ 0.16%, Si ≤ 0.04% and aluminum ingot with aluminum content ≥ 99.7%, and no waste is added. In this way, the element Si content in the 7072 alloy is guaranteed to be in the range of 0.05-0.1%. The Fe element is added in the form of aluminum-iron master alloy or 90% iron powder, and the Zn element is added in the form of zinc ingot.

[0075]The electrolytic aluminum liquid with Fe≤0.16% and Si≤0.04% is pre-refined in the t...

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Abstract

The invention discloses a method for preparing aluminum foil for automobile radiators, which comprises the following steps: preparing aluminum melt; continuous casting and rolling, during continuous casting and rolling, the contact interface between the steel strip of the casting machine and the slab is uniformly sprayed with a layer of nano-scale carbon dioxide Silicon powder; homogenization annealing; cold rolling; finished annealing. The invention provides a method for producing aluminum foil for automobile radiators by means of continuous casting and rolling, and provides more choices for producing aluminum foil for automobile radiators with 7072 alloy.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy casting, in particular to a method for preparing aluminum foil for automobile radiators. Background technique [0002] Aluminum foil is widely used in electronics, electromechanical, aerospace, packaging, construction and other industries because of its excellent thermal conductivity, easy processing, small specific gravity, low price, no pollution, and recyclability. In the downstream consumption of aluminum foil in my country, aluminum foil for air conditioner radiators accounts for the largest proportion, and about 48% is used for heat transmission products such as air conditioners. However, due to the low threshold for air-conditioning foil production, single specifications and alloys, and suitable for large-scale production, more and more aluminum foil manufacturers have joined the ranks of air-conditioning foil production. The market competition caused by overcapacity is intensifying...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/10C22C1/06C22F1/053B22D11/06B21B1/46B21B1/40F28F21/08
CPCB21B1/40B21B1/463B22D11/0605B22D11/0668C22C1/06C22C21/10C22F1/053F28F21/084
Inventor 姜小龙邢俊杰朱勇陈君赵阳磊庞富伟
Owner 广西润泰铝业有限公司
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