A kind of aluminum alloy wheel hub and preparation method thereof

A technology of aluminum alloy wheels and spokes, which is applied in the field of wheel materials, can solve problems such as low strength, easy deformation, and high temperature resistance, and achieve the effects of high strength, good braking performance, and improved impact resistance

Active Publication Date: 2018-08-21
JIANGSU CHEGU NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The invention provides an aluminum alloy wheel hub with high temperature resistance, high tensile strength and good fatigue resistance and a preparation method thereof, which solves technical problems such as low strength, low temperature resistance and easy deformation of existing wheel hub materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Step 1: Weigh silicon 0.4%, iron 0.7%, magnesium 0.8%, copper 0.15%, chromium 0.04%, manganese 0.15%, titanium 0.15%, zinc 0.25%, and the balance is aluminum.

[0024] Step 2: Heat the aluminum to 770°C in the smelting furnace to melt it completely, and precipitate the gas and impurities in the molten aluminum, and add the remaining raw materials in order of melting point from high to low, and remove the impurities after all the remaining raw materials are melted , and then pour it into a mold for casting at 740°C for 10 minutes.

[0025] Step 3: After casting, cool to room temperature and transfer to the holding furnace, then heat up to 530°C at a rate of 150°C per hour, hold for 1.5 hours, then air cool to 400°C, then heat up to 530°C at a rate of 40°C per hour, and keep warm 2h, then tempered at 500°C for 4h, water-cooled to room temperature and made into spokes.

[0026] Step 4: Take by mass percentage: 0.01% silicon, 0.01% iron, 2.4% magnesium, 0.01% copper, 0.05%...

Embodiment 2

[0030] Step 1: Weigh silicon 0.8%, iron 0.7%, magnesium 1.2%, copper 0.4%, chromium 0.35%, manganese 0.15%, titanium 0.15%, zinc 0.25%, and the balance is aluminum.

[0031]Step 2: Heat the aluminum to 790°C in the smelting furnace to melt it completely, precipitate the gas and impurities in the molten aluminum, add the remaining raw materials in order of melting point from high to low, and remove the impurities after all the remaining raw materials are melted , and then pour it into a mold for casting at 760°C for 10 minutes.

[0032] Step 3: After casting, cool to room temperature and transfer to the holding furnace, then heat up to 550°C at a rate of 200°C per hour, hold for 2.5 hours, then air cool to 440°C, then heat up to 550°C at a rate of 60°C per hour, and keep warm 3h, and then at 520 ° C, tempering treatment for 5h, water cooling to room temperature and then made into spokes.

[0033] Step 4: Take by mass percentage: 0.25% silicon, 0.4% iron, 3.0% magnesium, 0.1% c...

Embodiment 3

[0037] Step 1: Weigh silicon 0.5%, iron 0.7%, magnesium 0.9-1.1%, copper 0.2%, chromium 0.1%, manganese 0.15%, titanium 0.15%, zinc 0.25%, and the balance is aluminum.

[0038] Step 2: Heat the aluminum to 770°C in the smelting furnace to melt it completely, and precipitate the gas and impurities in the molten aluminum, and add the remaining raw materials in order of melting point from high to low, and remove the impurities after all the remaining raw materials are melted , and then pour it into a mold for casting at 740°C for 10 minutes.

[0039] Step 3: After casting, cool to room temperature and transfer to the holding furnace, then heat up to 530°C at a rate of 150°C per hour, hold for 1.5 hours, then air cool to 400°C, then heat up to 530°C at a rate of 40°C per hour, and keep warm 2h, then tempered at 500°C for 4h, water-cooled to room temperature and made into spokes.

[0040] Step 4: Weigh according to mass percentage: 0.1% silicon, 0.1% iron, 2.6% magnesium, 0.03% co...

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Abstract

The invention discloses an aluminum alloy wheel hub and a manufacturing method thereof. The aluminum alloy wheel hub is formed by welding a spoke and a rim through friction stir welding. The produced vehicle wheel hub is not liable to deform and resistant to high temperatures, is not blistered or deformed when being burnt at the temperature ranging from 400 DEG C to 500 DEG C and is little in mass, the weight of the produced vehicle wheel hub is smaller than that of a common wheel hub by 3 pounds, the unit fuel course is increased by 5%, and the braking performance is good; the product mass is little, strength is high, the tensile strength ranges from 315 MPa to 355 MPa, the yield strength ranges from 230 MPa to 260 MPa, the impact-resisting capability of the produced wheel hub is improved by 30% compared with that of a forged wheel hub, the driving safety is ensured, the passing capability under various road conditions is improved, and the acceleration performance and the operation performance of a vehicle are ensured; and the fatigue resistance is good, the elongation ranges from 10% to 20%, the bearing capability is good and is 5 times that of a common iron wheel hub, high-speed running is quiet stable, the manufacturing method is simple, and raw materials are easy to obtain and capable of being widely produced and continuously replacing existing materials.

Description

technical field [0001] The invention relates to the technical field of wheel hub materials, in particular to an aluminum alloy wheel hub and a preparation method thereof. Background technique [0002] The spoke is a device to protect the rim and spoke of the vehicle wheel. It is characterized by a pair of circular cover plates. The diameter of the cover plate is close to the diameter of the wheel rim. There is a hole in the center of the cover plate that is larger than the rotation axis of the wheel. The part near the edge of the cover plate has an opening, and the edge of the cover plate is provided with an annular wheel plate, and the curved surface of the wheel plate can fit closely with the curved surface of the wheel rim. According to the structure of the spokes, the wheels are divided into spoke-plate type and spoke-type. At present, mainstream family cars all adopt the spoke-plate type spoke structure. [0003] The rim, commonly known as the rim, is a component that ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/08C22C1/02C22F1/047B23P15/00
CPCB23P15/00C22C1/026C22C21/08C22F1/002C22F1/047
Inventor 周光臻赵刚肖发如汤永胜
Owner JIANGSU CHEGU NEW MATERIALS CO LTD
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