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Cast aluminum alloy high in thermal conductivity

A technology for casting aluminum alloys with high thermal conductivity, applied in the field of casting, can solve the problems of poor thermal conductivity of aluminum alloys, unable to meet the development needs of automobiles, etc., and achieve the effects of high thermal conductivity and good mechanical properties

Active Publication Date: 2016-01-20
天津凯鑫程铝业股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The problem to be solved by the invention is to provide a cast aluminum alloy with high thermal conductivity, so as to overcome the poor thermal conductivity of the aluminum alloy in the prior art and cannot meet the needs of automobile development.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A high thermal conductivity cast aluminum alloy of the present invention has the weight percentages of each group as follows, silicon: 4.0%, iron: 3.0%, copper: 0.4%, magnesium: 0.15%, manganese: 0.3%, nickel: 0.6%, tin: 0.1%, impurity: 0.1%, the rest is aluminum.

[0021] Add raw materials according to the ratio for smelting, first preheat the furnace at 400-450°C for 20 minutes, and purge with inert gas, then add pure aluminum ingots for melting, when the temperature of pure aluminum industry reaches 800°C, keep the temperature for 20 minutes , use pure aluminum to fully melt, then lower the temperature of the furnace to 760 ° C, then add pure silicon, keep the temperature for 20 minutes, after the silicon is melted, continue to stir for 10 minutes, cool down, when the temperature of the furnace drops to 700 ° C, then add the remaining intermediate alloy After the melting is complete, let it stand still, and finally add magnesium, after the melting is complete, contin...

Embodiment 2

[0024] A high thermal conductivity cast aluminum alloy of the present invention has the weight percentages of each group as follows, silicon: 6.5%, iron: 1.0%, copper: 1.0%, magnesium: 0.05%, manganese: 0.4%, nickel: 0.4%, tin: 0.2%, impurities: 0.15%, the rest is aluminum.

[0025] According to the ratio of adding raw materials for smelting, first preheat the furnace at 450°C for 30 minutes, and purging with inert gas, then add pure aluminum ingots for melting, when the temperature of pure aluminum industry reaches 830°C, keep the temperature for 30 minutes, use The pure aluminum must be fully melted, then lower the temperature of the furnace to 790°C, then add pure silicon, keep the temperature for 30 minutes, after the silicon melts, continue to stir for 15 minutes, then cool down, when the temperature of the furnace drops to 740°C, add the remaining intermediate alloy and melt After it is complete, let it stand still, and finally add magnesium. After the melting is complet...

Embodiment 3

[0028] A high thermal conductivity cast aluminum alloy of the present invention has the weight percentages of each group as follows, silicon: 5.0%, iron: 2.0%, copper: 0.6%, magnesium: 0.1%, manganese: 0.35%, nickel: 0.5%, tin: 0.15%, impurity: 0.2%, the rest is aluminum.

[0029] According to the ratio of adding raw materials for smelting, first preheat the furnace at 420 ° C for 25 minutes, and purging with inert gas, then add pure aluminum ingots to melt, when the temperature of pure aluminum industry reaches 810 ° C, keep the temperature for 25 minutes, use The pure aluminum must be fully melted, then lower the temperature of the furnace to 770°C, then add pure silicon, keep the temperature for 25 minutes, after the silicon melts, continue to stir for 12 minutes, then cool down, when the temperature of the furnace drops to 720°C, add the remaining intermediate alloy and melt After it is complete, let it stand still, and finally add magnesium. After the melting is complete,...

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Abstract

The invention provides cast aluminum alloy high in thermal conductivity. The cast aluminum alloy is composed of, by weight, silicon of 4.0-6.5%, iron of 1.0-3.0%, copper of 0.4-1.0%, magnesium of 0.05-0.15%, manganese of 0.3-0.4%, nickel of 0.4-0.6%, tin of 0.1-0.2%, impurities of 0.05-0.2% and the balance aluminum. The cast aluminum alloy is good in castability and mechanical property, high in thermal conductivity and electrical conductivity and especially suitable for manufacturing automobile spare parts such as LED automobile lamp radiators and heating plates.

Description

technical field [0001] The invention relates to the field of casting, in particular to a casting aluminum alloy with high thermal conductivity. Background technique [0002] Aluminum alloy is easy to process, light in weight and energy-saving. It is widely used in aerospace, automobile, machinery manufacturing, shipbuilding and chemical industries. With the continuous development of the automobile industry, the requirements for lightweight vehicles and low energy consumption have become a major trend in the automobile manufacturing industry. At present, most of the aluminum alloy parts used in automobiles are formed by casting. The cast aluminum alloy parts can have good mechanical properties and can prolong the service life of the parts themselves and the parts that are in direct contact with them. However, the thermal conductivity of existing cast aluminum alloys is not ideal, which limits the development of high-speed and high-power automobiles. Therefore, the research a...

Claims

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Application Information

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IPC IPC(8): C22C21/02C22C1/06C22F1/043
Inventor 袁茂凯
Owner 天津凯鑫程铝业股份有限公司
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