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Aluminum alloy, preparation method thereof and die casting

A technology of aluminum alloy and die-casting, applied in the field of non-ferrous metal materials, can solve the problems of softening, melting, poor fluidity and filling properties, etc., and achieve the effects of changing the brazing wetting angle, increasing fluidity, and excellent castability

Active Publication Date: 2022-01-11
惠州市田宇中南铝合金新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. Aluminum alloys for aluminum-silicon die-casting have a low melting point (below 550°C), and high-temperature brazing needs to be heated to about 600°C. Aluminum alloys for aluminum-silicon die-casting will soften when soaked in a high-temperature brazing bath for a long time even melted;
[0005] 2. Brazable die-casting aluminum alloy has the problem of poor castability, which is manifested by poor fluidity and filling property during casting (die-casting), wide solidification range, easy cracks in die-casting products, and die-casting production. Materials etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0042] More specifically, in order to further promote the growth of the pseudoeutectic structure in the aluminum alloy, the aluminum alloys described in Examples 1-4 are all prepared by the following preparation method, and the method for preparing the aluminum alloy includes the following steps:

[0043] Step 1, configuring raw materials according to the mass percentage of the composition of the aluminum alloy, the raw materials include A00 aluminum ingots, magnesium ingots, 80-120 mesh iron powder, electrolytic manganese flakes, silver, Al-3Sc alloy, Al-10Y alloy;

[0044] Step 2, prepare the Al-Mn-3Fe master alloy, put part of the A00 aluminum ingot into the melting furnace and heat up and melt to not less than 850°C, and add electrolytic manganese flakes (the added electrolytic manganese flakes The quality is 1% of the quality of the A00 aluminum ingot that melts), then add iron powder in batches (the quality of the iron powder that adds is the 3% of the quality of the A00 ...

Embodiment 1

[0061] An aluminum alloy is provided in this embodiment, and the composition of the aluminum alloy is: Fe (iron): 0.9%, Mg (magnesium): 0.5%, Mn (manganese): 0.2%, Ag (silver): 0.15%, Sc (scandium ): 0.2%, Y (yttrium): 0.3%, and the balance is Al (aluminum).

Embodiment 2

[0063] An aluminum alloy is provided in this embodiment, and the composition of the aluminum alloy is: Fe (iron): 1.0%, Mg (magnesium): 0.6%, Mn (manganese): 0.4%, Ag (silver): 0.18%, Sc (scandium ): 0.25%, Y (yttrium): 0.4%, and the balance is Al (aluminum).

[0064] The aluminum alloy provided in this example was melted and produced by die-casting, wherein the die-casting process parameters were: casting temperature 685°C, mold preheating temperature 260°C, casting pressure 140MPa, injection speed 2m / s.

[0065] The die-casting sample obtained in this example is a thin-walled casting (thickness 4mm), without heat treatment, after 3 days of natural aging, its mechanical properties can be measured at room temperature: Vickers hardness is 52-55HV, tensile strength is 120-150MPa , Yield strength 80-100MPa, elongation ≥ 10.5%.

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PUM

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Abstract

The invention relates to an aluminum alloy which comprises the following components including 0.9%-1.4% of iron, 0.5%-0.9% of magnesium, 0.2%-0.5% of manganese, 0.15%-0.3% of silver, 0.2%-0.3% of scandium, 0.3%-0.5% of yttrium and the balance aluminum. The invention further relates to a preparation method of the aluminum alloy. The invention also relates to a die casting which is made of the aluminum alloy.

Description

technical field [0001] The invention relates to the field of nonferrous metal materials, in particular to an aluminum alloy, a preparation method of the aluminum alloy, and a die casting using the aluminum alloy. Background technique [0002] Aluminum alloy is lightweight and has many properties such as excellent thermal conductivity and high corrosion resistance, so it is widely used as a raw material for its components in automobiles, industrial machinery, aircraft, home appliances, and various other fields. One of them is the field of aluminum alloys for die-casting, and representative aluminum alloys include Al-Si-Cu-based aluminum alloys for die-casting, Al-Mg-based aluminum alloys for die-casting, and Al-Si-Mg-based aluminum alloys for die-casting. aluminum alloy. [0003] At present, die-casting aluminum alloy products such as sub-equipment substrates, heat pipe joints, and lubricating oil radiator collection boxes all need to be assembled by high-temperature brazing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C21/06C22C1/03C22C1/06B22D17/00
CPCC22C21/00C22C21/06C22C1/026C22C1/03C22C1/06B22D17/00
Inventor 尹德艳
Owner 惠州市田宇中南铝合金新材料科技有限公司
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