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High performance air conditioning aluminum foil and method for preparing same

A high-performance, aluminum foil technology, applied in metal rolling, manufacturing tools, metal rolling, etc., can solve the problems of low plasticity of thin aluminum foil, low sprint flanging height, etc., to achieve high cupping value, high sprint flanging, The effect of fine and uniform tissue

Inactive Publication Date: 2008-11-19
江阴博威合金材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, most of these thin aluminum foils have defects such as low plasticity and low sprint flanging height.

Method used

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  • High performance air conditioning aluminum foil and method for preparing same
  • High performance air conditioning aluminum foil and method for preparing same
  • High performance air conditioning aluminum foil and method for preparing same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Step 1, smelting, refining, heat preservation

[0028] Put each raw material in a smelting furnace for smelting according to the ratio. The smelting temperature is 740℃~750℃. Refining starts after the raw materials are melted. Refined once every 3 hours, and then introduced into the holding furnace with a holding temperature of 745°C to 760°C. Ti is added in the form of AlTiB wire (Ti content in AlTiB wire is 5%, B content is 1%), AlTiB wire is added at the entrance of the degassing box, and the feeding speed of AlTiB wire is about 220mm / min;

[0029] Step two, casting and rolling

[0030] For casting and rolling, the nozzle temperature is controlled at 730°C, the temperature of the degassing box is at 720°C, the temperature of the front box is 690°C, the length of the casting and rolling zone is 48mm, and the rolling speed is 1000m / min.

[0031] Step 3, cold rolling, edge trimming

[0032] The cold rolling is carried out in seven steps, as follows: 6.9mm→4.6mm→2.3mm...

Embodiment 2

[0042] The difference between this embodiment and Embodiment 1 is that the annealing step adopts an industrial furnace experiment. The temperature setting adopts the method of setting the furnace gas temperature and the workpiece temperature. The mechanical properties are measured by different temperature ranges, and the temperature range of 290-305°C / 255-265°C×26h is more suitable (note that 290-305°C is the furnace Air temperature, 255~265℃ is the metal temperature), the average tensile strength of the product is 135~145MPa, and the elongation is 14~16%, which fully meets the needs of users. However, it should be noted that the actual temperature of the industrial furnace is different from that of the experimental furnace. Because the experimental furnace heats up quickly, the sample heats up quickly and reaches temperature quickly. The recovery process is too late to take place during the heating period,

[0043] The lattice distortion can be maintained at a relatively hi...

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Abstract

The invention relates to a high-performance air conditioner aluminum foil and a method for preparing the same. The aluminum foil mainly consists of the following alloying elements in percentage by weight: 0.28 to 0.33 percent of FeO, 0.1 to 0.15 percent of Si, 0.20 to 0.25 percent of Mn, 0.01 percent of Cu, 0.05 percent of Zn, 0.04 to 0.055 percent of Ti and the balance being Al and inevitable impurities. The preparation method mainly comprises the following: step one, melting, refining and heat preservation; step two, casting and rolling; step three, cold rolling and trimming cut; step four, precision rolling; step five, annealing at an annealing temperature of between 260 and 310 DEG C and heat preservation for 2 to 3 hours; step six, checkup and packaging. The high-performance air conditioner aluminum foil and the method can lessen the thickness of the air conditioner aluminum foil and ensure plasticity, height of the air conditioner aluminum foil and no flanging of longthrust.

Description

technical field [0001] The invention relates to an aluminum foil material. It is mainly used for cast-rolled plate cooling fins of heat exchangers for household air conditioners. Background technique [0002] At present, the aluminum foil material used as the heat sink of the heat exchanger of the household air conditioner generally has a thickness between 0.1 and 0.15 mm. The fins punched out of aluminum foil and copper tubes form a heat exchanger passing through the fins, which is interposed between the refrigerant and the air through a heat pump, and uses the temperature difference between them for heat exchange. With the improvement of people's living standards, the demand for household air conditioners is gradually increasing, so the amount of aluminum foil for air conditioners is also increasing. The original alloy material grades of air-conditioning aluminum foil are mainly A99, A1200, A8011, A1100 and MF03 (Japan). At the same time, in order to reduce costs, air c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00B23P15/00C22C1/02B21B1/26B21B37/16C22F1/04
Inventor 孟永华吴云李奇季建良
Owner 江阴博威合金材料有限公司
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