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Aluminum alloy for wheel hub and preparation method thereof, and aluminum alloy wheel hub

A technology of aluminum alloy and wheel hub, which is applied in the field of aluminum alloy, and can solve problems such as deformation of the wheel hub, difficulty in filling the aluminum liquid and aluminum liquid, and low pass rate of the aluminum alloy wheel hub

Inactive Publication Date: 2015-08-05
WUHU HUANGYAN IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

On the other hand, the content of inclusions also plays a vital role in the fluidity of molten aluminum and the shrinkage during solidification. When the content of inclusions is too high, it will directly reduce the fluidity of molten aluminum and make it difficult to Filling the casting mold will also increase the shrinkage during solidification, which will directly cause the cast hub to be easily deformed
[0005] The hydrogen content and the content of inclusions in the existing aluminum liquid are generally high, which directly affects the quality of the aluminum alloy wheel hub, resulting in a low pass rate of the aluminum alloy wheel hub, thereby increasing the production cost

Method used

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preparation example Construction

[0020] The invention provides a method for preparing a wheel hub aluminum alloy, the preparation method comprising:

[0021] a. Melting aluminum ingots to make primary aluminum liquid;

[0022] b. Mix the slag cleaning agent with the primary aluminum liquid, and then discharge the slag to make a secondary aluminum liquid;

[0023] c. In the presence of nitrogen, the refining agent is mixed with the secondary aluminum liquid, then left to stand and deslagging to make a third-level aluminum liquid;

[0024] d. Mixing the refiner and modifier with the third-level aluminum liquid to make a fourth-level aluminum liquid;

[0025] e. Sprinkle the slag remover on the surface of the fourth-grade aluminum liquid to make the fifth-grade aluminum liquid by removing slag

[0026] f. Sprinkling the slag remover on the surface of the five-stage aluminum liquid and performing degassing treatment to obtain the wheel hub aluminum alloy;

[0027] Wherein, the aluminum ingot includes silicon e...

Embodiment 1

[0047] a. Melting 1000kg of aluminum ingots with brand A356 at 740°C for 2 hours to make primary aluminum liquid;

[0048] b. At 740°C, mix 2.5g of slag cleaning agent (the mass ratio of sodium chloride, potassium chloride and sodium carbonate is 1:0.8:0.05) with 1000kg of primary aluminum liquid for 8 minutes, and then discharge the molten slag to make secondary aluminum liquid;

[0049] c. Mix 3.5kg of refining agent (sodium fluoroaluminate, sodium fluorosilicate, and carbon hexachloride in a mass ratio of 1:1.5:0.02) with the secondary aluminum liquid at 740°C and in the presence of nitrogen 15min, then stand still for 5min, and discharge the slag to make the third-grade aluminum liquid;

[0050] d. At 740°C, mix 2kg of refining agent (aluminum-titanium-boron alloy of Al-4Ti-0.005B from Dongguan Hongtai Metal Material Co., Ltd.), 0.2kg of modifier (from Xinchang County Shuangning Machinery Co., Ltd.) The grade is Al-Sr 10 Commercially available product) mixed with 1000kg...

Embodiment 2

[0055] a. Melting 1000kg of aluminum ingots with the grade A356 at 700°C for 1 hour to make primary aluminum liquid;

[0056] b. At 700°C, mix 2g of slag cleaning agent (the mass ratio of sodium chloride, potassium chloride and sodium carbonate is 1:0.5:0.03) with 1000kg of primary aluminum liquid for 5 minutes, and then discharge the slag to make secondary aluminum liquid;

[0057] c. In the presence of nitrogen at 700°C, mix 3 kg of refining agent (sodium fluoroaluminate, sodium fluorosilicate, and carbon hexachloride in a mass ratio of 1:1:0.01) with the secondary aluminum liquid for 10 minutes , then stand still for 4 minutes, and discharge the slag to make a three-stage aluminum liquid;

[0058] d. At 700°C, mix 1kg of refiner (aluminum-titanium-boron alloy of Al-4Ti-0.005B from Dongguan Hongtai Metal Material Co., Ltd.), 0.1kg of modifier (from Xinchang Shuangning Machinery Co., Ltd.) The grade is Al-Sr 10 Commercially available product) mixed with 1000kg third-grade ...

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Abstract

The invention discloses an aluminum alloy for a wheel hub and a preparation method thereof, and an aluminum alloy wheel hub. The preparation method comprises the following steps: a, melting an aluminum ingot so as to prepare a primary aluminum liquid; b, mixing a slag-clearing agent with the primary aluminum liquid, and discharging molten slag so as to prepare a second-stage aluminum liquid; c, mixing a refining agent with the second-stage aluminum liquid in the presence of nitrogen and then carrying out standing and slagging so as to prepare a third-stage aluminum liquid; d, mixing a refiner and a modifier with the third-stage aluminum liquid so as to prepare a fourth-stage aluminum liquid; E, spreading the slag-clearing agent onto the surface of the fourth-stage aluminum liquid to clear slag so as to prepare a fifth-stage aluminum liquid; and f, spreading the slag-clearing agent on the surface of the fifth-stage aluminum liquid, and carrying out degassing treatment so as to prepare the aluminum alloy for the wheel hub. According to the invention, the contents of hydrogen and impurities in the aluminum alloy for the wheel hub are low, so the aluminum alloy for the wheel hub has excellent fluidity and shrinkage during solidification; therefore, the surface of the aluminum alloy wheel hub prepared from the aluminum alloy used for the wheel hub is free of pin holes and slag holes.

Description

technical field [0001] The invention relates to aluminum alloys, in particular to an aluminum alloy wheel hub, a preparation method thereof, and an aluminum alloy wheel hub. Background technique [0002] Existing processing methods for aluminum alloy wheels include: melting and refining of aluminum ingots, casting and machining. The quality of molten aluminum after melting and refining directly determines the quality of aluminum alloy wheels. The quality of molten aluminum is mainly determined by four aspects: 1) the hydrogen content in the molten aluminum; 2) the content of inclusions in the molten aluminum. [0003] Among them, the hydrogen content in the aluminum liquid and the content of inclusions in the aluminum liquid determine the pinholes on the surface of the aluminum alloy hub, the fluidity of the aluminum liquid, and the shrinkage during solidification. Once the hydrogen content in the aluminum liquid is too high, the hydrogen atoms will eventually be discharged...

Claims

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Application Information

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IPC IPC(8): C22C1/02C22C1/06C22C21/04
Inventor 倪勤松王军
Owner WUHU HUANGYAN IND
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