Special aluminum alloy ingot for wheel hub and preparation method of aluminum alloy ingot

A technology of aluminum alloy ingots and aluminum alloy melts, which is applied in the field of aluminum alloy ingot processing, can solve the problems of low mechanical properties, achieve the effects of improving mechanical properties, small average grain size, and improving mechanical properties

Inactive Publication Date: 2016-04-20
BAISE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, A356 aluminum is generally used in casting aluminum alloy wheels, and the production of aluminum alloy wheels is one-time casting without reprocessing, and the internal structure of the metal has not changed, and there is a problem of low mechanical properties.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Aluminum alloy ingots for wheels, the mass percentages of each component are: Si1.7%, Mn0.12%, Cr0.08%, Mg2.5%, Cu0.2%, Zn0.2%, Ti0.6%, Sn0 .18%, Zr0.15%, Er0.15%, Sr0.15%, the total amount of impurity elements of other metals and non-metals does not exceed 0.5%, and the rest is Al.

[0017] The preparation method of the above-mentioned special aluminum alloy ingot for the wheel hub comprises the following steps:

[0018] (1) Melting: Melt the aluminum raw material, magnesium, silicon components and covering agent in a melting furnace to 700-720°C, then add other alloy components except aluminum, magnesium, and silicon, and continue to heat up to 740-750°C, After all the alloying elements are melted, the aluminum alloy melt is obtained;

[0019] (2) Refining: adjust the temperature of the aluminum alloy melt to 720-730°C, add a refining agent for refining treatment, then raise the temperature to 750-760°C, feed argon gas for further degassing refining, and remove slag ...

Embodiment 2

[0024] Aluminum alloy ingots for wheel hubs, the mass percentages of each component are: Si1.2%, Mn0.05%, Cr0.05%, Mg2.0%, Cu0.1%, Zn0.1%, Ti0.3%, Sn0 .09%, Zr0.1%, Er0.1%, Sr0.1%, the total amount of impurity elements of other metals and non-metals does not exceed 0.5%, and the rest is Al.

[0025] The preparation method of the above-mentioned special aluminum alloy ingot for the wheel hub comprises the following steps:

[0026] (1) Melting: Melt the aluminum raw material, magnesium, silicon components and covering agent in a melting furnace to 700-720°C, then add other alloy components except aluminum, magnesium, and silicon, and continue to heat up to 740-750°C, After all the alloying elements are melted, the aluminum alloy melt is obtained;

[0027] (2) Refining: adjust the temperature of the aluminum alloy melt to 720-730°C, add a refining agent for refining treatment, then raise the temperature to 750-760°C, feed argon gas for further degassing refining, and remove slag...

Embodiment 3

[0032] Aluminum alloy ingots for wheel hubs, the mass percentages of each component are: Si2.0%, Mn0.2%, Cr0.1%, Mg2.8%, Cu0.3%, Zn0.3%, Ti0.8%, Sn0 .25%, Zr0.2%, Er0.2%, Sr0.2%, the total amount of impurity elements of other metals and non-metals does not exceed 0.5%, and the rest is Al.

[0033] The preparation method of the above-mentioned special aluminum alloy ingot for the wheel hub comprises the following steps:

[0034] (1) Melting: Melt the aluminum raw material, magnesium, silicon components and covering agent in a melting furnace to 700-720°C, then add other alloy components except aluminum, magnesium, and silicon, and continue to heat up to 740-750°C, After all the alloying elements are melted, the aluminum alloy melt is obtained;

[0035] (2) Refining: adjust the temperature of the aluminum alloy melt to 720-730°C, add a refining agent for refining treatment, then raise the temperature to 750-760°C, feed argon gas for further degassing refining, and remove slag a...

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PUM

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Abstract

The invention discloses a special aluminum alloy ingot for a wheel hub. The aluminum alloy ingot comprises the components by mass percent: 1.2-2.0% of Si, 0.05-0.2% of Mn, 0.05-0.1% of Cr, 2.0-2.8% of Mg, 0.1-0.3% of Cu, 0.1-0.3% of Zn, 0.3-0.8% of Ti, 0.09-0.25% of Sn, 0.1-0.2% of Zr, 0.1-0.2% of Er, 0.1-0.2% of Sr, less than or equal to 0.5% of gross other metallic and nonmetallic impurity elements, and the balance Al. A preparation method of the aluminum alloy ingot comprises the steps of melting, refining, standing and casting. According to the aluminum alloy ingot, the elements such as Ti, Zr, Er and Sr are added, so that metamorphism and refining functions can be exerted on the structure of an aluminium alloy, so that the mechanical property of the aluminium alloy is improved, and a guarantee is provided for improving the mechanical property of the aluminium alloy wheel hub.

Description

technical field [0001] The invention relates to the field of processing aluminum alloy ingots, in particular to aluminum alloy ingots for forging wheel hubs and a preparation method thereof. Background technique [0002] With the rapid development of the automobile industry, the application of aluminum alloy wheels is becoming more and more common. Aluminum alloy wheels have four advantages over steel wheels: one is to reduce the non-load weight, thereby improving grip; the other is to improve acceleration and braking; the third is to increase rigidity, and the high hardness of aluminum wheels is significantly reduced. The inclination of the tire or hub when cornering is especially important for cars equipped with high-performance tires; the fourth is to improve the cooling effect of the braking system. Some metals in the alloy of the aluminum hub are good heat conductors, so the aluminum hub has It is beneficial to quickly release the heat generated by braking to reduce th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08C22C21/02C22C1/02C22C1/06B22D21/04
CPCC22C21/08B22D21/04C22C1/026C22C1/06C22C21/02
Inventor 覃铭何兵杨途才古斌
Owner BAISE UNIV
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