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A special aluminum alloy ingot for automobile wheel hub and preparation method thereof

A technology for aluminum alloy ingots and automobile wheel hubs, which is applied in the field of aluminum alloy ingot processing, can solve problems such as low mechanical properties, and achieve the effects of improving mechanical properties, increasing yield strength and elongation, and reducing the average size of grains

Inactive Publication Date: 2018-08-28
唐承舜
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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 automobile wheels, the mass percentages of each component are: Si1.7%, Mn0.12%, Cr0.08%, Mg1.4%, Cu0.12%, Zn0.2%, Ti0.5%, Eu0.13%, La0.12%, B0.09%, Sr0.04%, 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 automobile 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 r...

Embodiment 2

[0024] Aluminum alloy ingots for automobile wheels, the mass percentages of each component are Si1.2%, Mn0.05%, Cr0.05%, Mg1.0%, Cu0.1%, Zn0.1%, Ti0.3%, Eu0 .09%, La0.09%, B0.06%, Sr0.02%, 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 automobile 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 re...

Embodiment 3

[0032] Aluminum alloy ingots for automobile wheels, the mass percentages of each component are: Si2.0%, Mn0.2%, Cr0.1%, Mg1.8%, Cu0.3%, Zn0.3%, Ti0.8%, Eu0.18%, La0.16%, B0.12%, Sr0.06%, 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 automobile 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 remo...

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Abstract

The invention discloses an aluminum alloy ingot special for an automobile hub. The aluminum alloy ingot comprises, by mass, 1.2-2.0% of Si, 0.05-0.2% of Mn, 0.05-0.1% of Cr, 1.0-1.8% of Mg, 0.1-0.15% of Cu, 0.1-0.3% of Zn, 0.3-0.8% of Ti, 0.09-0.18% of Eu, 0.09-0.16% of La, 0.06-0.12% of B, 0.02-0.06% of Sr, 0-0.5% of other metal impurity elements and non-metal impurity elements, and the balance Al. A preparation method of the aluminum alloy ingot comprises the steps of melting, refining, standing and casting. By applying the aluminum alloy ingot to manufacturing of the aluminum alloy hub, compared with a traditional aluminum alloy hub material, the tensile strength, the yield strength and the elongation percentage of the aluminum alloy hub are remarkably improved, and the mechanical properties of the aluminum alloy hub are greatly improved.

Description

technical field [0001] The invention relates to the field of processing aluminum alloy ingots, in particular to aluminum alloy ingots for forging automobile 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 t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/02C22C21/08C22C1/06B22D21/04
CPCB22D21/04C22C1/06C22C21/02C22C21/08
Inventor 梁健
Owner 唐承舜
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