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Aluminum die-cast alloy and preparation method thereof

A casting aluminum alloy, qualified technology, applied in the field of aluminum alloy, to achieve good solid solution strengthening effect, reduce viscosity, increase the effect of die castability

Inactive Publication Date: 2018-08-17
SHANDONG HESHAN MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to solve the technical problem that existing die-casting aluminum alloys have incompatibility defects in die-castability and mechanical strength, and provides a die-casting method for steering pump end covers of automobiles with good die-castability and high mechanical strength. Aluminum alloy and its preparation method

Method used

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  • Aluminum die-cast alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A die-cast aluminum alloy, based on the chemical composition of the final product, including the following components in weight fraction:

[0023] Si 12%; Cu 6%; Mg 0.2%; Mn 0.3%; Fe 0.8%; Zn 0.5%; Ni 0.3%; Ti 0.2%; Sn 0.1%; Pb 0.1%; the total amount of other impurities is less than or equal to 0.15; The balance is Al.

[0024] The method for preparing die-cast aluminum alloy includes the following steps:

[0025] (1) Drying: The prepared raw materials: pure aluminum and Al-Si, Al-Cu, Al-Mg, Al-Mn, Al-Fe, Al-Zn, Al-Ni, Al-Ti, Al-Sn , Al-Pb master alloy, drying treatment;

[0026] (2) Melting: first melt the pure aluminum ingot, when the aluminum liquid temperature reaches 770°C, then add the aluminum-silicon master alloy, after the aluminum-silicon master alloy is melted, then add other master alloys, and after the melting is complete, let it stand; Then carry out composition analysis in front of the furnace to detect the composition content of the alloy melt, and make the co...

Embodiment 2

[0029] A die-cast aluminum alloy, based on the chemical composition of the final product, including the following components in weight fraction: Si11%; Cu5%; Mg 0.1%; Mn 0.1%; Fe 0.1%; Zn 0.1%; Ni 0.1%; Ti 0.1%; Sn 0.1%; Pb 0.1%; the total amount of other impurities is less than or equal to 0.15; the balance is Al.

[0030] The preparation method is the same as in Example 1.

Embodiment 3

[0032] A die-cast aluminum alloy, based on the chemical composition of the final product, including the following components in weight fraction: Si12%; Cu6%; Mg 0.3%; Mn 0.5%; Fe 1.3%; Zn 1%; Ni 0.5%; Ti 0.3%; Sn 0.2%; Pb 0.2%; the total amount of other impurities is less than or equal to 0.15; the balance is Al.

[0033] The preparation method is the same as in Example 1.

[0034] The comparative example uses the mechanical data of ADC14.

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Abstract

The invention belongs to the field of aluminum alloys and particularly relates to an aluminum die-cast alloy and a preparation method thereof. According to the chemical composition of a final product,the aluminum die-cast alloy comprises the following components including, by weight, 11%-12% of Si, 5%-6% of Cu, 0%-0.3% of Mg, 0%-0.5% of Mn, 0%-1.3% of Fe, 0%-1% of Zn, 0%-0.5% of Ni, 0%-0.3% of Ti, 0%-0.2% of Sn, 0%-0.2% of Pb, smaller than or equal to 0.15% of impurities in total quantity, and the balance Al. In order to solve the technical problem of the detect that existing aluminum die-cast alloys cannot have good die-casting property and high mechanical strength at the same time, the aluminum die-cast alloy which is good in die-casting property, high in mechanical strength and applicable to a steering pump end cover of an automobile is provided and the preparation method of the aluminum die-cast alloy is also provided.

Description

Technical field [0001] The invention belongs to the field of aluminum alloys, and particularly relates to a die-cast aluminum alloy and a preparation method thereof. Background technique [0002] In view of the fact that die-cast aluminum alloy can realize one-time forming of complex structure, it has great advantages in terms of low cost and ease of process, making the application of die-cast aluminum alloy extremely common. [0003] In the automobile and machinery industries, the proportion of aluminum alloy parts in auto parts is getting higher and higher. Die casting is a common process for auto parts. However, because die castings cannot be strengthened by heat treatment, and there are shrinkage and shrinkage problems, die casting Parts can only be used for automotive non-structural parts. At present, the structural parts on automobiles are mainly high-strength steel, cast iron and forged aluminum alloys, and structural parts have high requirements for material strength. Aft...

Claims

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Application Information

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IPC IPC(8): C22C21/02C22C1/03
CPCC22C1/026C22C1/03C22C21/02
Inventor 张长兴杨明辉
Owner SHANDONG HESHAN MACHINERY