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Aluminum alloy cast rod for casting hub and preparing method of aluminum alloy cast rod

A technology of aluminum alloy and aluminum alloy melt, applied in the field of aluminum alloy cast bar processing, can solve the problems of poor mechanical properties, low mechanical properties, low hardness of aluminum alloy wheel hubs, etc., to achieve improved yield strength and elongation, and good safety , excellent impact toughness and corrosion resistance

Inactive Publication Date: 2016-04-13
BAISE UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The wheel hub is one of the important parts of the vehicle driving system, and it is a security device with high requirements. It is closely related to the driving performance, riding comfort and safety of the vehicle. , good heat dissipation, easy molding, good shock absorption performance, etc., and are widely used in the current automobile industry, but the hardness of aluminum alloy wheels is smaller than that of steel wheels, and the mechanical properties are worse than steel wheels. One of the ways to improve mechanical properties An important focus is the improvement of aluminum alloy materials
[0003] The quality of the aluminum alloy material is a major factor affecting the quality of the wheel hub. A356 aluminum is commonly used in ordinary casting wheels, and the production of aluminum alloy wheels is one-time casting without reprocessing. The internal structure of the metal The structure 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] An aluminum alloy cast rod for casting wheels, the mass percentages of the components are: Si0.7%, Mo0.09%, Mg1.6%, Zn0.2%, Ti0.6%, B0.05%, Mn0. 11%, Zr0.06%, Er0.06%, Gd0.03%, the total amount of impurity elements of other metals and nonmetals does not exceed 0.5%, and the rest is Al.

[0017] The preparation method of the aluminum alloy cast rod for casting 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 730-740°C, spray into the refining agent for refining treatment, then raise the temperature to 750-760°C, pass in argon gas for degassing and refining, and remove slag af...

Embodiment 2

[0024] An aluminum alloy cast rod for casting wheel hubs, the mass percentages of the components are: Si0.5%, Mo0.05%, Mg1.3%, Zn0.1%, Ti0.3%, B0.03%, Mn0. 06%, Zr0.03%, Er0.03%, Gd0.02%, 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 aluminum alloy cast rod for casting 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 730-740°C, spray into the refining agent for refining treatment, then raise the temperature to 750-760°C, pass in argon gas for degassing and refining, and remove sl...

Embodiment 3

[0032] An aluminum alloy cast rod for casting wheels, the mass percentages of the components are: Si0.9%, Mo0.11%, Mg1.8%, Zn0.3%, Ti0.8%, B0.06%, Mn0. 15%, Zr0.08%, Er0.08%, Gd0.04%, 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 aluminum alloy cast rod for casting 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 730-740°C, spray into the refining agent for refining treatment, then raise the temperature to 750-760°C, pass in argon gas for degassing and refining, and remove slag a...

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Abstract

The invention discloses an aluminum alloy cast rod for casting a hub. The cast rod is made of raw materials including, by mass percentage, 0.4% of Si, 0.12% of Mn, 0.08% of Cr, 1.7% of Mg, 0.2% of Cu, 0.6% of Ti, 0.05% of B, 0.11% of Sb, 0.16% of Zr, 0.04% of Gd, not larger than 0.5% of other metal and nonmetallic impurity elements and the balance Al. The preparing method of the aluminum alloy cast rod comprises the steps of smelting, refining, standing and casting. According to the aluminum alloy cast rod, elements of Sb, Zr, Gd and the like are added to achieve the modification and refining effects on an aluminum alloy structure, the cast rod is used for producing the aluminum alloy hub, the tensile strength, the yield strength and the ductility of the aluminum alloy hub can be greatly improved, and the excellent impact toughness and corrosion resistance are achieved.

Description

technical field [0001] The invention relates to the field of processing aluminum alloy cast rods, in particular to an aluminum alloy cast rod for casting wheel hubs and a preparation method thereof. Background technique [0002] The wheel hub is one of the important components of the vehicle driving system, and it is a security device with high requirements. It is closely related to the driving performance, riding comfort and safety of the vehicle. , good heat dissipation, easy molding, good shock absorption performance, etc., and are widely used in the current automobile industry. However, the hardness of aluminum alloy wheels is smaller than that of steel wheels, and their mechanical properties are worse than those of steel wheels. One of the ways to improve mechanical properties An important focus is on the improvement of aluminum alloy materials. [0003] The quality of the aluminum alloy material is a major factor affecting the quality of the wheel hub. A356 aluminum i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08C22C1/02C22C1/06B22D11/14
CPCC22C21/08B22D11/003B22D11/145C22C1/026C22C1/06
Inventor 覃铭何兵杨途才古斌
Owner BAISE UNIV
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