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A high-strength and pressure-resistant aluminum alloy cast rod for heavy-duty truck hubs and its preparation process

An aluminum alloy and wheel hub technology is applied in the field of automobile wheel hub materials to achieve the effects of improving fluidity, inhibiting recrystallization, and improving die casting quality.

Active Publication Date: 2021-04-09
宝胜(宁夏)线缆科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the above existing problems, the present invention proposes a high-strength and pressure-resistant aluminum alloy cast rod for heavy truck hubs and its preparation process. Through reasonable raw material selection and coordination and improvement in the preparation process, the mechanical properties of the aluminum alloy cast rod are effectively improved. Performance and die-casting quality, formula and process targeted adjustment, significantly reduced problems such as cracks, uneven distribution, floating impurities, etc., its wear resistance and pressure resistance have been significantly improved, the effective service life is extended, and the overall quality is improved. Wider scope of application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A high-strength and pressure-resistant aluminum alloy cast rod for heavy truck hubs, comprising the following components in mass percentage: Si 0.95%, Mg 0.74%, Cu 1.2%, Mn 0.33%, Ti 0.13%, Sc 0.15%, Te 0.02%, Fe<0.25%, Al balance; Among them, aluminum comes from industrial aluminum ingots; tellurium comes from copper-tellurium alloy; copper comes from copper-tellurium alloy, electrolytic copper, copper-aluminum master alloy; other elements come from the corresponding aluminum-based master alloy.

[0029] Also includes composite reinforcing material 0.8%. The composite reinforcing material is an aluminum-based alloy containing a mixture of alkali-free glass fibers and magnesium borate whiskers at a mass ratio of 1:0.5, and the mixture of the two accounts for 10% by mass of the aluminum-based alloy, wherein the alkali-free glass fiber The aspect ratio is 6.5-7, and the aspect ratio of magnesium borate whiskers is 11-13.

[0030]The preparation method of the composite re...

Embodiment 2

[0037] A high-strength and pressure-resistant aluminum alloy cast rod for heavy-duty truck hubs, including the following components in mass percentage: 1.0% Si, 0.80% Mg, 1.15% Cu, 0.28% Mn, 0.12% Ti, 0.22% Sc, 0.01% Te , Fe<0.25%, Al balance; Among them, aluminum comes from industrial aluminum ingots; tellurium comes from copper-tellurium alloys; copper comes from copper-tellurium alloys, electrolytic copper, copper-aluminum master alloys; other elements come from corresponding aluminum-based master alloys.

[0038] Also includes composite reinforcing material 1.0%. The composite reinforcing material is an aluminum-based alloy containing a mixture of alkali-free glass fibers and magnesium borate whiskers at a mass ratio of 1:0.5, and the mixture of the two accounts for 10% by mass of the aluminum-based alloy, wherein the alkali-free glass fiber The aspect ratio is 6.5-7, and the aspect ratio of magnesium borate whiskers is 11-13.

[0039] The preparation method of the compos...

Embodiment 3

[0046] A high-strength and pressure-resistant aluminum alloy cast rod for heavy truck hubs, comprising the following components in mass percentage: Si 1.05%, Mg 0.78%, Cu 1.15%, Mn 0.37%, Ti 0.12%, Sc 0.1%, Te 0.005%, Fe<0.25%, Al balance; Among them, aluminum comes from industrial aluminum ingots; tellurium comes from copper-tellurium alloy; copper comes from copper-tellurium alloy, electrolytic copper, copper-aluminum master alloy; other elements come from the corresponding aluminum-based master alloy.

[0047] Also includes composite reinforcing material 0.8%. The composite reinforcing material is an aluminum-based alloy containing a mixture of alkali-free glass fibers and magnesium borate whiskers at a mass ratio of 1:0.5, and the mixture of the two accounts for 7% by mass of the aluminum-based alloy, wherein the alkali-free glass fiber The aspect ratio is 6.5-7, and the aspect ratio of magnesium borate whiskers is 11-13.

[0048] The preparation method of the composite r...

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Abstract

A high-strength and pressure-resistant aluminum alloy cast rod for heavy truck hubs and its preparation process, the aluminum alloy cast rod includes the following components in mass percentage: Si 0.95-1.05%, Mg 0.74-0.86%, Cu1.15-1.4%, Mn 0.28-0.46%, Ti 0.12-0.14%, Sc 0.1-0.22%, Te0.005-0.03%, Fe<0.25%, Al balance; also includes composite reinforcing material 0.8-1.2%, the present invention adopts reasonable The coordination of raw material selection and preparation process has effectively improved the mechanical properties and die-casting quality of aluminum alloy cast rods, and the targeted adjustment of formula and process has significantly reduced problems such as cracks, uneven distribution, and foreign impurities, and its wear resistance Both performance and pressure resistance have been significantly improved, the effective service life is prolonged, the overall quality is improved, and the scope of application is wider.

Description

technical field [0001] The invention relates to the technical field of automobile hub materials, in particular to a high-strength and pressure-resistant aluminum alloy cast rod for heavy truck hubs and a preparation process thereof. Background technique [0002] The wheel hub is an important part of the car, and its quality directly affects the performance and aesthetics of the car. Due to the light weight, high strength and good toughness of aluminum alloy, many automobile wheels at home and abroad are made of aluminum alloy materials. [0003] The production process of automobile wheels requires very strict requirements on the performance of the wheel materials. The produced wheels not only require high strength, corrosion resistance, excellent impact toughness, fatigue resistance and good wear resistance, but also Must have a good finish to enhance the aesthetics of the car hub. [0004] In the process of wheel hub production, in order to achieve a better finish and aes...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C49/06C22C49/14C22C47/12C22C47/02C22F1/057C22C101/06
CPCC22C47/02C22C47/12C22C49/06C22C49/14C22F1/002C22F1/057
Inventor 周鹏何泽山周伟张秋峰汪全芳
Owner 宝胜(宁夏)线缆科技有限公司
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