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A kind of aluminum alloy automobile wheel hub and preparation method thereof

An automobile wheel hub and aluminum alloy technology, which is applied in the direction of wheel manufacturing, wheels, rims, etc., can solve the problems of increased friction coefficient of aluminum alloy surface, large bearing pressure of wheel hub, weakened axial tensile resistance of rim, etc. Improved strength and elongation, simplified hub structure, and improved finished product quality

Active Publication Date: 2018-07-06
山东金马汽车装备科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] For car lovers, the pursuit of car wheels with large caliber and wide rims, at the same speed, the car wheels with large calibers can speed up quickly, the rims are wide, the area in contact with the ground is large, and the bearing pressure of the wheels is large. During high-speed rotation, The car runs smoothly and has little bumpy feeling; during braking, the contact area with the ground is large, the friction force is large, and the effect of point braking and emergency stop is good; but the rim is too wide, which will cause the axial tensile performance of the rim to weaken, and high-speed rotation During the process, the rim is easy to crack, and safety accidents occur. During the manufacturing process of the rim, the thickness of the rim increases along with the widening, and the thickness increases in a large proportion, which makes the hub heavy and the fuel consumption of the car increases significantly.
[0004] After retrieval, the application number is 201210505890.2, a new type of aluminum alloy and its preparation method. The composition of the aluminum alloy is, by weight percentage, 10.2-10.5% silicon, 2.3-2.4% copper, 0.8-1.0% magnesium, 3.1-3.3% % nickel, 0.12-0.15% titanium, 0.15-0.18% tungsten, 0.03-0.05% boron, 0.1-0.2% vanadium, 0.01-0.015% zirconium, and the balance is aluminum; Casting technology is used to improve the strength of aluminum alloy, but in this technical scheme, silicon-aluminum rod-shaped or columnar grains will be produced inside the structure of aluminum alloy during high-temperature smelting, and the grain size is relatively large, resulting in aluminum alloy The friction coefficient of the surface is increased, the surface is rough, and there are burrs on the shiny surface of the wheel hub

Method used

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  • A kind of aluminum alloy automobile wheel hub and preparation method thereof
  • A kind of aluminum alloy automobile wheel hub and preparation method thereof
  • A kind of aluminum alloy automobile wheel hub and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] An aluminum alloy automobile wheel hub, comprising spokes 11, rim 12, bead seat 13, wheel lip 14, bayonet 15, bolt hole 16, valve hole 17, said rim 12 is a Z-shaped rim, the Z-shaped rim includes a Z-shaped The initial section 102, the reverse transition section 103, the Z-shaped extension section 104, the Z-shaped initial section 102 is connected to the reverse transition section 103, the reverse transition section 103 is connected to the Z-shaped extension section 104, and the reverse transition section 103 of the rim increases The tensile performance of the wheel hub is increased to prevent the rim 12 from being too wide to cause the wheel hub to crack. Both ends of the Z-shaped starting section 102 and Z-shaped extending section 104 are respectively provided with a bead seat 13 and a wheel lip is provided on one side of the bead seat 13 14. A valve hole 17 is provided on the reverse transition section 103 in the side wall of the rim 12.

[0039] The upper part of the r...

Embodiment 2

[0055] The difference from Example 1 is:

[0056] A method for preparing aluminum alloy automobile wheels includes the following steps:

[0057] 1) In the smelting process, the aluminum ingot is smelted and alloy materials are added. The final weight percentages of the main components of the aluminum alloy solution are: Si: 7.0%, Mg: 0.35%, Sr: 0.008%, Ti: 0.12%, Cu: 0.007% , Zn: 0.006%, Ni: 0.008%, Mn: 0.09%, Fe: 0.1%, Cr: 0.007%, Pb: 0.006%, Sn: 0.008%, the total amount of other impurities ≤ 0.005%, and the rest is Al.

[0058] After the melting process is completed, the temperature of the molten aluminum is maintained at 705°C, and the low-pressure casting process is performed.

Embodiment 3

[0060] Compared with Example 1, the difference is:

[0061] A method for preparing aluminum alloy automobile wheels includes the following steps:

[0062] 2) In the low-pressure casting process, the molten aluminum is transferred to the transfer package. The temperature of the molten aluminum is maintained at 720°C, and the molten aluminum is refined and degassed with 99.99% high-purity nitrogen for 10 minutes. After that, the molten aluminum is sampled and analyzed by a sampler. , Transferred to the low pressure casting machine holding furnace at 705℃ for 1 hour; pressurized to 0.05MPa aluminum liquid enters the riser pipe for lifting, the rise time is 10s; pressurize to 0.08MPa until the aluminum liquid fills the mold cavity, and then The pressure is adjusted to 0.07MPa for pressure holding, and the pressure holding time is 300s.

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PUM

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Abstract

The invention discloses an aluminum alloy automobile hub and a preparation method thereof. The aluminum alloy automobile hub comprises spokes, a rim, bead seats, wheel lips, a bayonet, bolt holes, and a valve hole. The rim is a Z-shaped rim, and the Z-shaped rim comprises a Z-shape starting section, a reverse transition section, and a Z-shape extending section. The Z-shape starting section is connected with the reverse transition section which is connected with the Z-shape extending section. The two ends of the Z-shape starting section and the two ends of the Z-shape extending section are provided with bead seats respectively, each of the wheel lips is arranged on one side of a bead seat, and the valve hole is arranged on the reverse transition section in the side wall of the rim. The spokes are arranged on the rim and distributed at equal angles relative to the rim center. A reinforcing rib is arranged on one side of each spoke, a mounting plate is arranged at the center of the upper portion of the rim and connected with the ends of the spokes, the bayonet is disposed at the center of the mounting plate, and some bolt holes are formed around the bayonet. The aluminum alloy automobile hub has simplified structure and light weight, and is attractive in appearance; the rim is wide, and meanwhile the hardness, tensile strength, and elongation of the hub are greatly improved.

Description

Technical field [0001] The invention relates to the technical field of aluminum alloy automobile hubs, in particular to an aluminum alloy automobile hub and a preparation method thereof. Background technique [0002] For the lightweighting of automobile wheels, technological innovation is mainly manifested in two aspects: one is the application of new high-strength, low-density lightweight materials in the wheel hub, in general, new materials replace traditional aluminum alloys; the other is the use of new moldings The technology realizes the simplification and lightness of the wheel hub structure, saves production materials and improves work performance. [0003] For car owners, the pursuit of car wheels with large caliber and wide rims, at the same speed, the car wheels with large calibers will accelerate faster, the rims are wide, the area in contact with the ground is large, the bearing pressure of the wheels is large, and during high-speed rotation, The car runs smoothly with...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60B21/02B60B21/06B23P15/00B22D18/04C22C21/02C22F1/043
CPCB22D18/04B23P15/00B23P2700/50B60B21/02B60B21/06B60B2310/202B60B2310/228B60B2310/232B60B2310/542B60B2310/614C22C21/02C22F1/043
Inventor 李政霖
Owner 山东金马汽车装备科技有限公司
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