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Aluminum alloy, and casting and preparation method thereof

An aluminum alloy casting and aluminum alloy technology, applied in the field of aluminum alloy materials, can solve the problems of corrosion resistance, mold non-adhesion, etc., and achieve the effects of excellent fluidity, grain refinement, and excellent corrosion resistance

Pending Publication Date: 2022-01-11
FAW JIEFANG AUTOMOTIVE CO
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the basis of optimizing the proportion of main alloying elements Si and Mg, this technology refines the modified Fe-rich phase, eutectic Si phase and primary Si phase through micro-alloying treatment to improve the strength and plasticity of die-casting aluminum alloys; however, its corrosion resistance Both the non-adhesion to the mold need to be improved

Method used

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  • Aluminum alloy, and casting and preparation method thereof
  • Aluminum alloy, and casting and preparation method thereof

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preparation example Construction

[0066] An embodiment of the present invention also provides a preparation method of the above-mentioned aluminum alloy. The preparation method comprises the following steps S10-S20:

[0067] Step S10: providing raw materials according to the aluminum alloy to be prepared.

[0068] In some of these embodiments, the raw material can be composed of aluminum ingot, aluminum silicon, aluminum magnesium, aluminum iron, aluminum manganese, aluminum rare earth, aluminum titanium master alloy; but not limited thereto, as long as the raw material can meet the element composition requirements.

[0069] Step S20: After the raw materials are smelted, casting is performed.

[0070] In some embodiments, casting methods include but are not limited to die casting, squeeze casting, low pressure casting, gravity casting, differential pressure casting, vacuum die casting, and semi-solid casting.

[0071] In some of these embodiments, the step of casting is formed in a casting mold.

[0072] Th...

Embodiment 1

[0076] An aluminum alloy comprises the following components by weight percentage: 10.6% silicon; 0.23% magnesium; 0.85% iron; 0.25% manganese; 0.21% titanium; Accounting for 50%; copper ≤ 0.1%; zinc ≤ 0.1%; nickel ≤ 0.1%; lead ≤ 0.05%; tin ≤ 0.05%;

[0077] According to the above-mentioned composition ratio, add aluminum ingots into the smelting furnace, after the aluminum ingots are melted, add aluminum-silicon, aluminum-magnesium, aluminum-iron, aluminum-manganese, aluminum-titanium, and aluminum-rare-earth master alloys for melting, then refining and degassing treatment, and then After the composition is tested and qualified, the liquid aluminum is extruded into the product mold by a squeeze casting machine to prepare aluminum-silicon alloy castings.

Embodiment 2

[0079] An aluminum alloy comprises the following components by weight percentage: 11.5% silicon; 0.22% magnesium; 0.82% iron; 0.32% manganese; 0.15% titanium; Accounting for 50%; copper ≤ 0.1%; zinc ≤ 0.1%; nickel ≤ 0.1%; lead ≤ 0.05%; tin ≤ 0.05%;

[0080] According to the above-mentioned composition ratio, add aluminum ingots into the smelting furnace, after the aluminum ingots are melted, add aluminum-silicon, aluminum-magnesium, aluminum-iron, aluminum-manganese, aluminum-titanium, and aluminum-rare-earth master alloys for melting, then refining and degassing treatment, and then After the composition is tested and qualified, the liquid aluminum is extruded into the product mold by a high-pressure casting machine to prepare aluminum-silicon alloy castings.

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Abstract

The invention relates to an aluminum alloy, and a casting and preparation method thereof. The aluminum alloy comprises the following element components in percentage by weight: 8%-14% of silicon, 0.1%-1.1% of magnesium, 0.7%-1.3% of iron, 0.01%-0.5% of manganese, 0.1%-0.6% of titanium, 0.01%-0.8% of rare earth elements, smaller than or equal to 0.2% of copper, smaller than or equal to 0.2% of zinc, smaller than or equal to 0.2% of nickel, smaller than or equal to 0.2% of lead, smaller than or equal to 0.2% of tin and the balance of aluminum. According to the aluminum alloy disclosed by the invention, various elements such as silicon, magnesium, iron, manganese, titanium, rare earth and copper in the aluminum alloy are regulated and controlled, so that the aluminum alloy has excellent corrosion resistance on the basis of ensuring the mechanical property, spraying protection treatment is not needed when the aluminum alloy is applied to a product, and the spraying-free treatment effect of an aluminum alloy casting is achieved; and on this basis, excellent fluidity is achieved during casting, the non-adhesion to a mold is improved, and the demolding difficulty of the aluminum alloy casting during forming is greatly reduced.

Description

technical field [0001] The invention relates to the field of aluminum alloy materials, in particular to an aluminum alloy, a casting and a preparation method thereof. Background technique [0002] As people's concerns about greenhouse gas emissions caused by human activities continue to intensify, and new technologies such as new energy sources and intelligent networking in the automotive industry continue to be introduced, the requirements for lightweight vehicles are getting higher and higher. Non-ferrous metal alloy castings, especially aluminum alloy die castings, extrusions, low pressure parts, heavy castings, differential pressure parts, vacuum die castings, semi-solid castings and other aluminum alloy castings are more and more widely used. [0003] For example, automotive products need to adapt to various weather environments due to their particular application, and their parts are also exposed to corrosion in various environmental atmospheres such as coastal areas, ...

Claims

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Application Information

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IPC IPC(8): C22C21/02B22D18/02B22D17/00
CPCC22C21/02B22D18/02B22D17/00
Inventor 张鑫李伟乔小兵谢文才何铭雪周胜蓝王保男
Owner FAW JIEFANG AUTOMOTIVE CO
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