Silicon-and-magnesium-containing aluminum alloy sheet for air-conditioning radiator and preparation method of silicon-and-magnesium-containing aluminum alloy sheet

A technology of aluminum alloy sheet and radiator, applied in the field of air conditioner radiator silicon-magnesium aluminum alloy sheet and its preparation, can solve the problems of weak tensile strength, poor electrical conductivity, poor mechanical properties, etc., and achieves increased fluidity, improved Yield, effect of reducing gas and inclusions

Inactive Publication Date: 2015-03-04
ANHUI TIANXIANG AIR CONDITIONING SCI & TECH CO LTD
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  • 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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Embodiment Construction

[0018] An air-conditioning radiator containing silicon-magnesium-aluminum alloy sheet, which contains chemical element components and mass percentages: Si0.25-0.35, Mg0.48-0.55, Cr0.01-0.02, Fe0.05-0.15, Ti 0.01 -0.03, Cu0.01-0.03, La0.005-0.02, and the remainder is Al.

[0019] The production method of the described air-conditioning radiator containing silicon-magnesium-aluminum alloy sheet:

[0020] (1) Batching and melting, the temperature is 750°C, and the melting time is 3.9 hours;

[0021] (2) Refining, the temperature is 750 ° C, the amount of refining agent is 1.5% of the weight of the aluminum alloy liquid, the refining time is 28 minutes, and it is left to stand for 23 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 homogenizat...

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Abstract

The invention relates to a silicon-and-magnesium-containing aluminum alloy sheet for an air-conditioning radiator. The silicon-and-magnesium-containing aluminum alloy sheet comprises the following chemical elements by mass percent: 0.25-0.35% of Si, 0.48-0.55 of Mg, 0.01-0.02 of Cr, 0. 05-0.15 of Fe, 0.01-0.03 of Ti, 0.01-0.03 of Cu, 0.005-0.02 of La, and the balance being Al. The aluminum alloy sheet provided by the invention has high strength and toughness, is added with lanthanum, the composition undercooling is carried out during gold casting, crystal grains are refined, a secondary crystal spacing is reduced, gas and inclusions in an alloy are reduced, and an inclusion tends to be nodulized, the surface tension of a melt can also be reduced, the mobility is increased, and ingots are favorably cast. According to a production method provided by the invention, the phenomena of layering, peeling, bubbling and cracking of aluminum alloy are reduced, and the yield is improved; a refining agent has a good refining effect, so that the pores and slag inclusion phenomena are obviously reduced.

Description

technical field [0001] The invention relates to the field of aluminum alloy heat dissipation materials, in particular to a silicon-containing magnesium-aluminum alloy sheet for an air-conditioning radiator 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 mecha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08C22C1/02C22C1/06C22F1/047
CPCC22C21/08C22C1/026C22C1/06C22F1/047
Inventor 骆宣佐
Owner ANHUI TIANXIANG AIR CONDITIONING SCI & TECH CO LTD
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