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Cast aluminum alloy material for radiator and manufacturing method thereof

A technology for casting aluminum alloys and manufacturing methods, which is applied in the field of aluminum alloys, can solve problems such as poor thermal conductivity, low thermal conductivity, and low cost, and achieve the goals of improving strength and toughness, uniform grain refinement, and improving casting performance Effect

Active Publication Date: 2013-10-16
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

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

Method used

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Embodiment Construction

[0010] Cast aluminum alloy materials for radiators, the weight percentage of constituent elements are: silicon 5.2-5.6, copper 2.0-2.3, magnesium 1.2-1.5, zinc 1.2-1.4, manganese 3.2-3.5, strontium 0.05-0.08, Mo0.2- 0.3, V0.23-0.26, Ta0.10-0.16, Ni2.1-2.3, W0.14-0.16, the balance is aluminum.

[0011] The manufacturing method includes smelting, slag removal, detection and adjustment of alloy composition, adding refining agent for refining, casting, cooling down to 180-240°C at a rate of 60-80°C / hour after casting, and keeping the temperature for 4-6 hours; Cool down to 440-470°C at a rate of -105°C / hour and keep warm for 2-3 hours; then raise the temperature to 530-560°C at a rate of 50-70°C / hour and keep warm for 2-3 hours; then heat at a rate of 140-160°C / hour Cool down to 220-240°C, keep warm for 4-6 hours; then raise the temperature to 380-410°C at a rate of 40-60°C / hour, keep warm for 2-3 hours; then cool to room temperature at a rate of 120-150°C / hour.

[0012] The refi...

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Abstract

The invention provides a cast aluminum alloy material for a radiator. The cast aluminum alloy material is characterized by comprising the following components: on the basis of weight percentage, 5.2 to 5.6 of Si, 2.0 to 2.3 of Cu, 1.2 to 1.5 of Mg, 1.2 to 1.4 of Zn, 3.2 to 3.5 of Mn, 0.05 to 0.08 of Sr, 0.2 to 0.3 of Mo, 0.23 to 0.26 of V, 0.10 to 0.16 of Ta, 2.1 to 2.3 of Ni and 0.14 to 0.16 of W, with the balance being Al. According to the invention, a heat treatment process effectively improves strength and toughness of an aluminum alloy, refinement of grains in the structure of the aluminum alloy is uniform, so castability of the aluminum alloy is effectively improved; the cast aluminum alloy material has the advantages of a scientific formula and good thermal conductivity and is applicable to the radiator of an air conditioner.

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): C22C21/02C22C1/02C22C1/06F28F21/08
Inventor 骆宣佐
Owner ANHUI TIANXIANG AIR CONDITIONING SCI & TECH CO LTD
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