Aluminum-silicon-magnesium cast aluminum alloy for radiator of air-conditioner and manufacturing method thereof

A technology for casting aluminum alloys and aluminum-silicon-magnesium systems, applied in the field of aluminum alloys, can solve the problems of difficult processing, low thermal conductivity, poor thermal conductivity, etc., and achieves improved tensile strength, good corrosion resistance, and good thermal conductivity. Effect

Active Publication Date: 2013-10-16
ANHUI TIANXIANG AIR CONDITIONING SCI & TECH CO LTD
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Problems solved by technology

The cost of aluminum alloy castings is low, but the thermal conductivity of generally cast aluminum alloy structural parts is not high, usually around 90 W/m·K, so that the thermal conductivity is poor. Currently, pu

Method used

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Embodiment Construction

[0010] Aluminum-silicon-magnesium air-conditioning radiator cast aluminum alloy, the weight percentage of its constituent elements is: silicon 9.5-10.5, magnesium 3.40-3.60, titanium 0.60-0.80, strontium 0.04-0.06, Hf0.08-0.12, Bi0.5 -0.8, Ni0.8-1.1, Sn0.2-0.3, Zr0.16-0.19, Li0.12-0.14, Ba0.06-0.08, the balance is aluminum;

[0011] The manufacturing method of casting aluminum alloys for aluminum-silicon-magnesium air-conditioning radiators, including smelting, slag removal, testing and adjustment of alloy components, adding refining agents for refining, casting, adding electrolytic aluminum in an intermediate frequency furnace, heating to 710-735°C, and waiting for the aluminum material After melting, add other alloy components, raise the temperature to 740-780°C, stir for 10-15 minutes, remove slag, detect and adjust the alloy composition; then, add refining agent, stir for 20-30 minutes, and then remove slag; cool down to 670-730 ℃, for casting; after casting, cool down to ...

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Abstract

The invention relates to an aluminum-silicon-magnesium cast aluminum alloy for a radiator of an air-conditioner. The aluminum alloy is characterized by comprising the following components: on the basis of weight percentage, 9.5 to 10.5 of Si, 3.40 to 3.60 of Mg, 0.60 to 0.80 of Ti, 0.04 to 0.06 of Sr, 0.08 to 0.12 of Hf, 0.5 to 0.8 of Bi, 0.8 to 1.1 of Ni, 0.2 to 0.3 of Sn, 0.16 to 0.19 of Zr, 0.12 to 0.14 of Li and 0.06 to 0.08 of Ba, with the balance being Al. The aluminum alloy provided by the invention overcomes the problems of low strength and elongation percentage of an aluminum-silicon alloy and poor casting performance and corrosion resistance of an aluminum-copper alloy and an aluminum-zinc alloy and has the advantages of improved tensile strength, toughness and casting performance, low cost, good corrosion resistance and good thermal conductivity.

Description

technical field [0001] The invention belongs to an aluminum alloy, in particular to an aluminum alloy material for an air-conditioning radiator. Background technique [0002] Most of the heat dissipation structural parts of air conditioners are made of aluminum alloy, including castings, extruded parts, stamping parts and forging parts. The cost of aluminum alloy castings is low, but the thermal conductivity of generally cast aluminum alloy structural parts is not high, usually around 90 W / m·K, so that the thermal conductivity is poor. Currently, pure aluminum (purity > 99% or more) is commonly used ), although the thermal conductivity is high (> 220 W / m·K), its fluidity and castability are not good, and it is too soft, difficult to process, and easy to deform. At present, the study of casting aluminum alloys with high thermal conductivity and high strength is very important for air-conditioning radiators. Contents of the invention [0003] The object of the presen...

Claims

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Application Information

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IPC IPC(8): C22C21/02C22C1/02C22C1/06
Inventor 骆宣佐
Owner ANHUI TIANXIANG AIR CONDITIONING SCI & TECH CO LTD
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