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High-strength high-elongation aluminum foil for air-conditioner and manufacturing method of such aluminum foil

A technology with high elongation and manufacturing methods, applied in lighting and heating equipment, heat exchange equipment, etc., can solve the problems of high strength of air-conditioning foil, unfavorable deep drawing deformation, poor plasticity, etc., and achieve the effect of fine casting structure grains

Inactive Publication Date: 2016-05-11
JIANGSU ALCHA ALUMINUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cast-rolling method 3102 air-conditioning foil has high strength, the tensile strength is controlled at 135-145MPa, the plasticity is poor, and the elongation rate is 10-15%, which is not conducive to deep drawing deformation

Method used

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  • High-strength high-elongation aluminum foil for air-conditioner and manufacturing method of such aluminum foil

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The ratio of raw materials is as follows, Fe: 0.35%, Si: 0.22%, Cu: 0.01%, Mn: 0.32%, Mg: 0.005%, Zr: 0.041%, Cr: 0.036%, Ti: 0.025%, the balance for aluminum. The manufacturing process of aluminum foil for air conditioners with high strength and high elongation is as follows:

[0024] (1) Put the raw material in the weight percentage into the smelting furnace, the melt temperature is 740°C during smelting, the refining temperature in the static furnace is 730°C, the refining time is 10 minutes, and the composition Ti is in the form of Al-Ti-B wire added in the launder;

[0025] (2) Casting is carried out on a semi-continuous casting machine. In order to obtain a more uniform and finer casting structure grain, the casting process parameters are controlled as follows: casting temperature is 700°C, casting speed is 50mm / min, and cooling water flow rate is 230m 3 / h;

[0026] (3) Place the cast ingot in the annealing furnace for homogenization annealing, the annealing t...

Embodiment 2

[0033] The ratio of raw materials is as follows, Fe: 0.32%, Si: 0.25%, Cu: 0.03%, Mn: 0.29%, Mg: 0.005%, Zr: 0.052%, Cr: 0.035%, Ti: 0.034%, the balance for aluminum. The manufacturing process of aluminum foil for air conditioners with high strength and high elongation is as follows:

[0034] (1) Put the raw materials in the weight percentage into the melting furnace, the melt temperature is 730°C during melting, the refining temperature in the standing furnace is 730°C, the refining time is 12 minutes, and the composition Ti is in the form of Al-Ti-B wire added in the launder;

[0035] (2) Casting is carried out on a semi-continuous casting machine. In order to obtain a more uniform and finer casting structure grain, the casting process parameters are controlled as follows: casting temperature is 690°C, casting speed is 55mm / min, and cooling water flow rate is 260m 3 / h;

[0036] (3) The ingot is placed in the annealing furnace for homogenization annealing, the annealing t...

Embodiment 3

[0043] The ratio of raw materials is as follows, Fe: 0.37%, Si: 0.20%, Cu: 0.01%, Mn: 0.35%, Mg: 0.009%, Zr: 0.035%, Cr: 0.044%, Ti: 0.02%, the balance for aluminum. The manufacturing process of aluminum foil for air conditioners with high strength and high elongation is as follows:

[0044] (1) Put the raw material in the weight percentage into the melting furnace, the melt temperature is 760°C during melting, the refining temperature in the static furnace is 750°C, the refining time is 15 minutes, and the composition Ti is in the form of Al-Ti-B wire added in the launder;

[0045] (2) Casting is carried out on a semi-continuous casting machine. In order to obtain a more uniform and finer casting structure grain, the casting process parameters are controlled as follows: casting temperature is 695°C, casting speed is 48mm / min, and cooling water flow rate is 210m 3 / h;

[0046] (3) The ingot is placed in the annealing furnace for homogenization annealing, the annealing tempe...

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Abstract

The invention discloses a high-strength high-elongation aluminum foil for an air-conditioner. The high-strength high-elongation aluminum foil consists of the following components in percentage by weight: 0.32-0.38% of Fe, 0.20-0.26% of Si, 0-0.03% of Cu, 0.29-0.35% of Mn, 0-0.01% of Mg, 0.032-0.052% of Zr, 0.035-0.055% of Cr, 0.02-0.04% of Ti, and the balance of aluminum. A manufacturing method of such an aluminum foil comprises the steps of carrying out annealing and subsequent hot rolling after semi-continuous casting, carrying out intermediate annealing after preliminary cold rolling, followed by secondary cold rolling, and then carrying out finished product annealing; the finished product has the tensile strength of 135-145MPa, the yield strength of greater than or equal to 130MPa, and the elongation of 16-20%.

Description

technical field [0001] The invention relates to an aluminum foil for an air conditioner and a manufacturing method thereof, more specifically, to an aluminum foil for an air conditioner with high strength and high elongation and a manufacturing method thereof. Background technique [0002] With the development of science and technology and the improvement of people's living standards, air conditioners are constantly developing in the direction of small size, high efficiency, energy saving, and lower production costs. It is required to reduce the thickness of the aluminum foil used in the production of air conditioner fins, and at the same time have high strength, high plasticity and high deep drawability, so as to adapt to the thinning of the fins and achieve the purpose of reducing costs. The cast-rolling method 3102 air-conditioning foil has high strength, the tensile strength is controlled at 135-145MPa, the plasticity is poor, and the elongation rate is 10-15%, which is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22F1/04B22D11/16F28F21/08
CPCC22C21/00B22D11/16C22F1/04F28F21/084
Inventor 吴永新
Owner JIANGSU ALCHA ALUMINUM CO LTD
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