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Rare earth strengthening aluminum alloy sheet for air conditioner radiator and preparation method of rare earth strengthening aluminum alloy sheet

A technology of aluminum alloy sheets and radiators, which is applied in the field of rare earth reinforced air-conditioning radiator aluminum alloy sheets and its preparation, can solve problems such as poor mechanical properties, poor electrical conductivity, and weak tensile strength, and achieve improved yield, gas and Effect of less inclusions and low aging temperature

Inactive Publication Date: 2015-03-11
ANHUI TIANXIANG AIR CONDITIONING SCI & TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the aluminum foil of air conditioner radiator mainly has poor mechanical properties, such as tensile strength (140Rm / MPa), yield strength (100R 0.2 / MPa), weak hardness (9-12 degrees), poor electrical conductivity, poor thermal conductivity, poor plasticity, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] A rare-earth reinforced air-conditioning radiator aluminum alloy sheet, which contains chemical element components and mass percentages: Si0.45-0.75, La0.02-0.04, Ce0.01-0.03, Pr0.01-0.03, Nd 0.01- 0.03, Ni0.24-0.49, Mg2.03-2.69, the rest is Al.

[0019] The production method of the rare earth reinforced air-conditioning radiator aluminum alloy sheet:

[0020] (1) Ingredients, smelting, the temperature is 748°C, and the smelting time is 3.8 hours;

[0021] (2) Refining, the temperature is 748 ° C, the amount of refining agent is 1.6% of the weight of the aluminum alloy liquid, the refining time is 28 minutes, and it is left to stand for 18 minutes;

[0022] (3) Casting, use a 50-mesh high-temperature ceramic filter plate to filter the molten aluminum, and then cast it. The temperature of the molten aluminum is 705°C. After casting, it is cooled with water at 23°C and the water temperature is the same, and it is sent into the homogenization furnace, at 575°C 6.5 hours ...

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Abstract

The invention relates to a rare earth strengthening aluminum alloy sheet for an air conditioner radiator and a preparation method of the rare earth strengthening aluminum alloy sheet. The aluminum alloy sheet comprises the following chemical element compositions in percentage by weight: 0.45-0.75 of Si (silicon), 0.02-0.04 of La (lanthanum), 0.01-0.03 of Ce (cerium), 0.01-0.03 of Pr (praseodymium), 0.01-0.03 of Nd (neodymium), 0.24-0.49 of Ni (nickel), 2.03-2.69 of Mg (magnesium) and the balance of Al (aluminium). The aluminum alloy sheet disclosed by the invention uses magnesium and rare-earth elements, so that the strength of alloy is greatly strengthened, crystal grains are refined, gases and inclusions are reduced, and the aging temperature is low. The production method disclosed by the invention reduces the layering, peeling, bubbling and cracking probabilities of the aluminum alloy, and the rate of finished products is increased. The refining agent of the aluminum alloy sheet has a good refining effect, and the probabilities of air holes and slag inclusion are obviously reduced.

Description

technical field [0001] The invention relates to the field of aluminum alloy heat dissipation materials, in particular to a rare-earth reinforced air-conditioning radiator aluminum alloy sheet and a preparation method thereof. Background technique [0002] The air conditioner radiator is a key component of the air conditioner, which is related to the working efficiency and service life of the air conditioner. Moreover, with the miniaturization of household air conditioners and the reduction of manufacturing costs, the thickness of air-conditioning foil fins is getting thinner and thinner, and it is developing in the direction of thinning, hardening, and high precision, requiring new alloys, new processing technologies and new technologies. quality height. Air-conditioning foil fins require high processing precision, requiring aluminum foil to have good plasticity and high strength. At present, the aluminum foil of air conditioner radiator mainly has poor mechanical properti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08C22C1/06
CPCC22C21/08C22C1/06C22F1/047F28F21/084
Inventor 骆宣佐
Owner ANHUI TIANXIANG AIR CONDITIONING SCI & TECH CO LTD
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