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Die-cast aluminum alloy

A technology for casting aluminum alloys and alloys, applied in the field of die-casting aluminum alloys, can solve the problems of low mechanical properties and hardness, restrict the development of high-speed and high-power automobiles, etc., and achieve the effect of improving mechanical properties.

Active Publication Date: 2016-03-02
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

Among the existing die-casting aluminum alloys, the mechanical properties and hardness are not high, which limits the development of high-speed and high-power automobiles

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A die-casting aluminum alloy, the die-casting aluminum alloy comprises the following components and the percentage by weight of each component is: 14.5% of silicon, 0.4% of magnesium, 0.23% of iron, 0.6% of zinc, 0.3% of nickel, 0.65% of manganese, and the rest is aluminum. The preparation method of die-casting aluminum alloy comprises the following steps:

[0023] (1) Heat the pure aluminum ingot to 720°C to melt, and keep the melted aluminum liquid for 20 minutes; fully melt the pure aluminum ingot, then add silicon and manganese to the aluminum liquid to melt in turn, then lower the temperature to 670°C, and Magnesium is completely pressed into the alloy liquid;

[0024] (2) Raise the temperature to 740°C to remove scum, add the remaining alloy components to the alloy liquid, keep it warm for 40 minutes, then raise the temperature to 820°C for refining, keep it warm for 25 minutes, and remove impurities.

[0025] (3) Lower the temperature of the molten body obtaine...

Embodiment 2

[0028] A die-casting aluminum alloy, characterized in that: the die-casting aluminum alloy comprises the following components and the weight percentage of each component is: 16% silicon, 0.02% magnesium, 0.3% iron, 1% zinc, 0.1% nickel, manganese 0.55%, and the balance is aluminum.

[0029] The preparation method of die-casting aluminum alloy comprises the following steps:

[0030] Heat the pure aluminum ingot to 750°C to melt, and keep the molten aluminum for 15 minutes; make the pure aluminum ingot fully melt, then add silicon and manganese to the aluminum liquid to melt in turn, then lower the temperature to 650°C, and completely compress the magnesium into the alloy liquid;

[0031] (2) Raise the temperature to 750°C to remove scum, add the remaining alloy components to the alloy liquid, keep it warm for 45 minutes, then raise the temperature to 800°C for refining, keep it warm for 25 minutes, and remove impurities.

[0032] (3) Lower the temperature of the melt obtained...

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PUM

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Abstract

The invention provides die-cast aluminum alloy. The die-cast aluminum alloy comprises the following components in percentage by weight: 12.5% to 16% of silicon, 0.02% to 0.1% of magnesium, 0.05% to 0.3% of iron, 0.4% to 1% of zinc, 0.1% to 0.5% of nickel, 0.55% to 0.75% of manganese and the balance of aluminum. By arrangement and combination of technological parameters, aluminum alloy with excellent performances is obtained; the mechanical properties of the aluminum alloy are improved; the alloy is more applicable to die casting due to the alloy components and proportion.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to a die-casting aluminum alloy. Background technique [0002] Aluminum alloy is an alloy composed of aluminum and other elements. It is the most commonly used material in structural engineering. It has small specific gravity, good heat transfer, good electrical conductivity, environmental protection, and recyclable recycling. It is widely used in 3C, automobiles Various fields such as transportation, home furnishing, aerospace, chemical industry, rocket, etc. According to the processing method, aluminum alloy can be divided into two categories: deformed aluminum alloy and cast aluminum alloy. Aluminum alloys can be divided into aluminum-silicon alloys, aluminum-copper alloys, aluminum-magnesium alloys, aluminum-zinc alloys, and aluminum-rare-earth alloys according to their chemical composition. Die-casting is a method of pouring molten alloy liquid into a pressure chamber ...

Claims

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Application Information

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