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Solar heat collecting and storing aluminum foil and manufacturing method thereof

A manufacturing method and technology of aluminum foil, which are applied to the processed and shaped aluminum foil and its manufacturing field, can solve the problems of harsh production process conditions of composite aluminum foil, high price of heat-absorbing coating, difficulty in popularization and application, etc., and achieve thermal conductivity guarantee and reasonable design. , the effect of excellent surface quality

Active Publication Date: 2015-02-18
江阴新仁铝箔科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The production process conditions of the composite aluminum foil are demanding, the yield is low, and the heat-absorbing coating is expensive, so it is difficult to popularize and apply

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] An aluminum foil for solar energy collection and heat storage, its thickness is 0.044mm, the chemical composition of the aluminum foil is calculated by mass percentage: Fe: 0.08%, Si: 0.02%, Cu: 0.1%, Mn: ≤0.005%, Mg: ≤0.005%, Zn: ≤0.005%, Ti: 0.03%, and the balance is Al and unavoidable impurities.

[0025] The manufacturing process steps of the above-mentioned aluminum foil for solar energy collection and thermal storage are as follows:

[0026] The first step, ingredients: configure the raw materials according to the chemical composition ratio, in which Ti is AlTi 5 Form configuration of B alloy wire;

[0027] The second step, smelting: the configured raw materials, AlTi 5 Except for B alloy wire, it is added to the melting furnace for melting. The melting process includes:

[0028] a. Heating and melting: set the furnace temperature to 950-1000°C, adjust the size of the flame and start to heat up, stir and measure temperature in time after melting, and control th...

Embodiment 2

[0045] An aluminum foil for solar energy collection and heat storage, its thickness is 0.043mm, the chemical composition of the aluminum foil is calculated by mass percentage: Fe: 0.02%, Si: 0.05%, Cu: 0.12%, Mn: ≤0.005%, Mg: ≤0.005%, Zn: ≤0.005%, Ti: 0.02%, and the balance is Al and unavoidable impurities.

[0046] The difference of the manufacturing process of the above-mentioned aluminum foil for solar energy collection and heat storage on the basis of Example 1 is:

[0047] The fourth step, cold rolling: the 6.5±0.2mm thick casting billet is rolled into a 3.2mm thick cold rolled plate by the first cold rolling process, and then rolled into a 1.6mm thick cold rolled plate by the second cold rolling process The thick cold-rolled plate is rolled into a 0.9mm thick cold-rolled plate by the third cold-rolling process, and then rolled into a 0.55mm-thick cold-rolled plate by the fourth cold-rolled process. After 24 hours of parking , and then rolled into a 0.32mm thick cold-rol...

Embodiment 3

[0052] An aluminum foil for solar energy collection and heat storage, its thickness is 0.045mm, the chemical composition of the aluminum foil is calculated by mass percentage: Fe: 0.1%, Si: 0.07%, Cu: 0.08%, Mn: ≤0.005%, Mg: ≤0.005%, Zn: ≤0.005%, Ti: 0.01%, and the balance is Al and unavoidable impurities.

[0053] The difference of the manufacturing process of the above-mentioned aluminum foil for solar energy collection and heat storage on the basis of Example 1 is:

[0054] The fourth step, cold rolling: the 6.5±0.2mm thick casting billet is rolled into a 3.6mm thick cold rolled plate by the first cold rolling process, and then rolled into a 1.9mm thick cold rolled plate by the second cold rolling process The thick cold-rolled plate is rolled into a 1.1mm thick cold-rolled plate by the third cold-rolling process, and then rolled into a 0.65mm-thick cold-rolled plate by the fourth cold-rolled process. After 24 hours of parking , and then rolled into a 0.36mm thick cold-roll...

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Abstract

The invention relates to a solar heat collecting and storing aluminum foil and a manufacturing method thereof. The solar heat collecting and storing aluminum foil comprises the following chemical components in percentage by mass: 0.01-0.07% of Si, 0.01-0.12% of Fe, 0.08-0.12% of Cu, smaller than or equal to 0.005% of Mn, smaller than or equal to 0.005% of Zn, smaller than or equal to 0.005% of Mg, 0.01-0.03% of Ti and the balance of Al and inevitable impurities. The aluminum foil has a thickness ranging from 0.043 to 0.045mm, the tensile strength of 250-280MPa, the yield strength of 235-265MPa, the elongation greater than or equal to 1%, and the thermal conductivity greater than or equal to 225W / (m.K) at 25 DEG C. Through reasonable setting of contents of copper and other alloy elements in the aluminum foil, a black copper oxide film layer with a strong surface colorizing capability is formed during surface chemical etching of the aluminum foil, so that the aluminum foil increases the solar energy absorbing rate and decreases the reflection coefficient.

Description

technical field [0001] The invention belongs to the field of aluminum foil and a manufacturing method thereof, and in particular relates to an aluminum foil with strong chemical blackening and coloring ability, excellent mechanical properties and convenient processing and molding, and a manufacturing method thereof. Background technique [0002] At present, the core structure of the heat-absorbing plate of the solar flat collector is mainly a flat aluminum foil plus a heat-absorbing coating, which relies on increasing the specific surface area of ​​the aluminum foil to improve the adhesion between the aluminum foil and the heat-absorbing coating, and the heat-absorbing coating achieves Purpose. The composite aluminum foil production process requires harsh conditions, the yield is low, and the heat-absorbing coating is expensive, so it is difficult to popularize and apply. Starting from improving the heat absorption effect and heat storage capacity of the solar energy-collec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/18C22C21/16C22C21/14B21B1/46B21D33/00
CPCC22C21/00C22C21/14C22C21/16C22C21/18F24S70/12Y02E10/40
Inventor 吴丹黄善球刘军民王民生任志峰李跃初
Owner 江阴新仁铝箔科技有限公司
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