Aluminium alloy for vehicle hub and preparation method thereof

A technology for an automobile wheel hub and a manufacturing method, which is applied in the metal field, can solve the problems of long production cycle, large equipment investment, complex process, etc., and achieves the effects of low production cost, reduction of unfavorable factors, and improvement of purity.

Inactive Publication Date: 2011-11-23
ZHEJIANG GKO ALUMINUM
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Complex process, long production cycle,

Method used

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  • Aluminium alloy for vehicle hub and preparation method thereof
  • Aluminium alloy for vehicle hub and preparation method thereof
  • Aluminium alloy for vehicle hub and preparation method thereof

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[0028] The mass percentage of each component of an aluminum alloy for automobile wheels of the present invention is: Zn 4.5-6.3wt%, Mg 1.4-2.5wt%, Cu 0.5-0.9wt%, Zr 0.12-0.3%wt, Ti 0.05-0.15 wt%, Cr 0.05~0.2wt%, Sc 0.1~0.3wt%, and the rest is Al. Each component of the alloy also contains impurity elements with a mass percentage of Si<0.1wt% and Fe<0.2wt%.

[0029] The manufacturing method of the aluminum alloy for automobile wheel hub of the present invention is:

[0030] (1) First, press pure Al 60-84%, industrial pure Mg 1.49-2.66%, industrial pure Zn 4.64-6.49%, AlCu50 master alloy 1.0-1.8%, AlZr15 master alloy 0.8-2.0%, AlTi5B1 master alloy 1.0-3.0 %, 2.5-10% of AlCr2 master alloy and 5-15% of AlSc2 master alloy to weigh the raw materials. Among them, the amount of Mg element burning loss is relatively large, so try to use the upper limit of the composition when weighing;

[0031] (2) Melt pure Al to 760-800°C in a smelting furnace, and then add industrial pure Zn and various ...

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Abstract

The invention provides an aluminium alloy for a vehicle hub and a preparation method thereof. The alloy comprises the following components by weight percent: 4.5-6.3% of Zn, 1.4-2.5% of Mg, 0.5-0.9% of Cu, 0.12-0.3% of Zr, 0.05-0.15% of Ti, 0.05-0.2% of Cr, 0.1-0.3% of Sc and the balance of Al. The preparation method of the aluminium alloy comprises the following steps: weighting raw materials, melting the raw materials except for magnesium blocks, adding a covering agent, then adding the preheated magnesium blocks, stirring, injecting nitrogen or argon to degas, filtering with a ported ceramic plate, reducing the temperature, standing for 20 minutes, and adopting a liquid forging mould and a liquid forging forming method to prepare the hub. The prepared vehicle hub has high strength, impact toughness and corrosion resistance; and the mechanical properties of the aluminium alloy hub can be ensured, the production cost can be reduced and the large-scale production of the hub is easy to perform.

Description

technical field [0001] The invention belongs to the field of metals, in particular to an aluminum alloy for automobile wheel hubs. The invention also relates to a manufacturing method of the aluminum alloy used for the automobile hub. Background technique [0002] In the production process of automobile aluminum wheels, the main consideration is strength. The forging process adopted abroad can obtain a dense metal structure, and the strength of this aluminum wheel hub is three times that of the aluminum wheel hub using the general casting process. However, the forging process requires relatively sophisticated production equipment, and the yield rate is only 50%-60%, and the production cost is relatively high. Although the casting process has greater flexibility in design and can be rapidly prototyped, it is prone to defects such as shrinkage cavities and porosity, and the strength of the hub is relatively low. [0003] The liquid die forging process combines the advantage...

Claims

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Application Information

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IPC IPC(8): C22C21/10C22C1/03B22D18/02B60B27/00
Inventor 李书通王新春胡伟刘阳
Owner ZHEJIANG GKO ALUMINUM
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