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Aluminum alloy automobile wheel hub composite reinforcement technology

An alloy and intermediate alloy technology, applied in the field of new materials, can solve problems such as hardness not meeting the requirements, material becoming brittle, and toughness not meeting the requirements, etc.

Inactive Publication Date: 2013-02-13
赵凯志
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, automobile manufacturers have higher and higher requirements for the performance of aluminum alloy wheels. The aluminum alloy wheel materials used in the daily production process often have the following unsatisfactory situations: the hardness increases, but the material becomes brittle, and the toughness is not enough. Meet the requirements, or the toughness meets the requirements, but the hardness cannot meet the requirements

Method used

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Embodiment Construction

[0015] A preferred embodiment of the present invention is given below:

[0016] 1. The formula of the magnesium alloy material is (percentage by weight): Si7.2%, Mg1.5%, Cu0.15%, Mn0.3%, Ti0.08%, Ni0.03%, Sr0.02%, and the rest is Al.

[0017] 2. Its preparation steps are as follows:

[0018] (1) First, add 2 / 3 of the aluminum material into the melting furnace for melting. After the aluminum material is melted, press crystalline silicon, magnesium and other materials into the molten aluminum with a bell jar according to the material formula, and then put the remaining 1 / 3 3. Add the aluminum material into the melting furnace. After the alloy is completely melted and stirred evenly, the temperature rises to 740°C, and then Cu, Sr, Ti and other intermediate alloys are added in turn, and the temperature continues to rise to 750°C;

[0019] (2) Al-10% RE modification and Al-5Ti-1B refinement treatment are used. In order to ensure the effect of modification treatment, Al-10% RE ( ...

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Abstract

The invention discloses an aluminum alloy automobile wheel hub composite reinforcement technology. Trace elements (comprising Mg, Ti, B, RE and the like) are added on the basis of original alloy components to carry out a reasonable component optimization, and effective purification, crystal grain refinement, deterioration treatment and finished product heat treatment are carried out in the melting process to simultaneously guarantee the good casting performance and the better mechanical performances of the alloy. The tensile strength, the yield strength and the elongation rate of aluminum alloy wheel hub products produced through utilizing the technology reach 262MPa, 179MPa and 9% respectively, and exceed strength performance standards in the Chinese wheel hub industry, so the technology has the advantages of certain practical production meaning, heat treatment period shortening, and substantial saving of the production cost.

Description

technical field [0001] The invention belongs to the field of new materials, and in particular relates to a composite strengthening technology of an aluminum alloy automobile wheel hub. Background technique [0002] The wheel hub is one of the most important safety parts on the car. It can be divided into steel wheel hub and aluminum wheel hub. Irregular alternating forces from dynamic loads in different directions such as turning of the car during driving, bumpy road surface, road obstacle impact, etc. The quality and reliability of the wheel not only affect the safety of the vehicle and the personnel and materials on the vehicle, but also affect the stability, maneuverability, comfort and other performances of the vehicle during driving. This requires the wheel hub to have good dynamic balance, high fatigue strength, It has good rigidity and elasticity, high precision in size and shape, and light weight. Therefore, automobile manufacturers have higher and higher requireme...

Claims

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Application Information

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IPC IPC(8): C22C21/04C22C1/06C22C1/02
Inventor 赵凯志
Owner 赵凯志
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