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A high-strength die-casting aluminum alloy

A casting aluminum alloy, high-strength technology, applied in the field of aluminum alloy, can solve the problems of low strength and elongation, fracture, deformation of mechanical parts, etc., achieve the effect of improving cutting performance, high strength and yield strength, and meeting the requirements of use

Active Publication Date: 2018-03-27
天津市程田新能源股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the strength and elongation of the existing die-casting aluminum alloys are relatively low, which is prone to deformation and fracture of mechanical parts, and cannot meet the working requirements of some mechanical parts that need to withstand large dynamic loads.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A high-strength die-casting aluminum alloy, the high-strength die-casting aluminum alloy includes the following components and the weight percentage of each component is: 6.5% silicon, 0.15% magnesium, 0.6% iron, 1.0% copper, 0.2% manganese, 0.2% zinc %, tin 0.2%, titanium 0.04%, the total weight of other impurities is less than 0.25%, and the balance is aluminum.

[0018] The method for preparing high-strength die-casting aluminum alloy comprises the following steps:

[0019] (1) Preheat the melting furnace for 20 minutes, put pure aluminum ingots into the furnace, heat to 780°C, and keep the temperature of the melted aluminum liquid for 25 minutes; fully melt the pure aluminum ingots, then add silicon and manganese to the aluminum liquid in sequence Melt, then lower the temperature to 660°C, completely press the magnesium into the alloy liquid;

[0020] (2) Add the remaining alloy components into the alloy liquid, keep it warm for 20 minutes, then raise the temperatu...

Embodiment 2

[0024] A high-strength die-casting aluminum alloy, the high-strength die-casting aluminum alloy comprises the following components and the weight percentage of each component is: 8.5% silicon, 0.1% magnesium, 0.5% iron, 0.7% copper, 0.3% manganese, 0.3% zinc %, tin 0.5%, titanium 0.1%, the total weight of other impurities is less than 0.25%, and the balance is aluminum.

[0025] The method for preparing high-strength die-casting aluminum alloy comprises the following steps:

[0026] (1) Preheat the melting furnace for 25 minutes, put pure aluminum ingots into the furnace, heat to 800°C, and keep the temperature of the melted aluminum liquid for 20 minutes; fully melt the pure aluminum ingots, then add silicon and manganese to the aluminum liquid in sequence Melting, then lowering the temperature to 700°C, completely pressing the magnesium into the alloy liquid;

[0027] (2) Add the remaining alloy components into the alloy liquid, keep it warm for 25 minutes, then raise the t...

Embodiment 3

[0031] A high-strength die-casting aluminum alloy, the high-strength die-casting aluminum alloy includes the following components and the weight percentage of each component is: 6.0% silicon, 0.2% magnesium, 1.0% iron, 1.5% copper, 0.1% manganese, 0.1% zinc %, tin 0.3%, titanium 0.01%, the total weight of other impurities is less than 0.25%, and the balance is aluminum.

[0032] The method for preparing high-strength die-casting aluminum alloy comprises the following steps:

[0033] (1) Preheat the melting furnace for 15 minutes, put pure aluminum ingots into the furnace, heat to 790°C, and keep the temperature of the melted aluminum liquid for 25 minutes; fully melt the pure aluminum ingots, then add silicon and manganese to the aluminum liquid in sequence Melting, then lowering the temperature to 700°C, completely pressing the magnesium into the alloy liquid;

[0034] (2) Add the remaining alloy components into the alloy liquid, keep it warm for 30 minutes, then raise the t...

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Abstract

The invention provides a high-strength die-cast aluminum alloy which comprises the following components in percent by weight: 5.5-7.5 percent of Si, 0.1-0. 2 percent of Mg, 0.5-1.0 percent of Fe, 0.7-1.5 percent of Cu, 0.1-0.3 percent of Mn, 0.1-0.3 percent of Zn, 0.1-0.5 percent of Sn, less than 0.25 percent of other impurities, and the balance of Al. The aluminum alloy is more suitable for die casting according to the components and the component proportions of the aluminum alloy, the strength and the yield strength of the die-cast aluminum alloy are high, the machining performance of the high-strength die-cast aluminum alloy is improved, the possibility of generating cracks in press fitting is low, and the using requirements of workpieces needing to bear larger dynamic loads can be met.

Description

technical field [0001] The invention relates to the technical field of aluminum alloys, in particular to a high-strength 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, etc. Various fields such as transportation, home furnishing, aerospace, chemical industry, rocket, etc. Die-casting aluminum alloy is an aluminum alloy obtained by die-casting. This kind of die-casting aluminum alloy can be used to produce workpieces with complex shapes, and its cost is low, so it is widely used. However, the strength and elongation of the existing die-casting aluminum alloys are relatively low, which is prone to deformation and fracture of mechanical parts, and cannot meet the worki...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/02C22C1/02C22C1/06C22F1/043
CPCC22C1/026C22C1/06C22C21/02C22F1/043
Inventor 袁茂凯
Owner 天津市程田新能源股份有限公司
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