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Aluminum alloy automobile hub and preparation method thereof

A technology for automobile hubs and aluminum alloys, which is applied in the manufacture of wheels, wheels, rims, etc., can solve the problems of increased surface friction coefficient of aluminum alloys, high bearing pressure of hubs, and weakened axial tensile performance of rims, etc., to achieve tensile strength Increased strength and elongation, simplification of hub structure, and improved yield of finished products

Active Publication Date: 2017-01-04
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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  • Aluminum alloy automobile hub and preparation method thereof
  • Aluminum alloy automobile hub and preparation method thereof
  • Aluminum alloy automobile hub and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0038]An aluminum alloy automobile wheel hub, comprising a spoke 11, a rim 12, a bead seat 13, a wheel lip 14, a bayonet 15, a bolt hole 16, and a valve hole 17, the rim 12 is a Z-shaped rim, and the Z-shaped rim includes a Z-shaped rim Initial section 102, reverse transition section 103, Z-shaped extension section 104, Z-shaped initial section 102 connects reverse transition section 103, reverse transition section 103 connects Z-shaped extension section 104, reverse transition section 103 of rim increases Increase the tensile performance of the wheel hub to prevent the wheel hub from cracking due to the excessive width of the rim 12. The two ends of the Z-shaped initial section 102 and the Z-shaped extension section 104 are respectively provided with bead seats 13, and one side of the bead seat 13 is provided with a wheel lip. 14. The reverse transition section 103 in the side wall of the rim 12 is provided with a valve hole 17 .

[0039] The upper part of the rim 12 is provi...

Embodiment 2

[0055] The difference with embodiment 1 is:

[0056] A method for preparing an aluminum alloy automobile wheel hub, comprising the following steps:

[0057] 1) Melting process, melting aluminum ingots, and adding alloy materials, the main components by weight percentage of the final 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 smelting process is completed, the temperature of the molten aluminum is kept at 705° C., and the low-pressure casting process is carried out.

Embodiment 3

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

[0061] A method for preparing an aluminum alloy automobile wheel hub, comprising the following steps:

[0062] 2) In the low-pressure casting process, the molten aluminum is transferred to the transfer ladle. The temperature of the molten aluminum is maintained at 720°C, and it 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 holding furnace of the low-pressure casting machine at 705°C for 1 hour; pressurized to 0.05Mpa, the aluminum liquid enters the liquid riser to rise the liquid, and the liquid rise time is 10s; pressurized to 0.08Mpa until the aluminum liquid fills the mold cavity, and then put The pressure is adjusted to 0.07Mpa for pressure holding, and the holding time is 300s.

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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 wheels, in particular to an aluminum alloy automobile wheel and a preparation method thereof. Background technique [0002] As far as the light weight of automobile wheels is concerned, technological innovation is mainly manifested in two aspects: one is the application of new high-strength and low-density lightweight materials in wheels. The technology realizes the simplification and lightening of the hub structure, saves production materials and improves the working performance. [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 i...

Claims

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Application Information

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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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