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Aluminum alloy bar for automobile hub and automobile hub

A technology of aluminum alloy wheels and automobile wheels, which is applied in the field of aluminum alloy materials, can solve the problems of affecting the appearance of the wheels, difficult to remove impurities, and scrapping of the wheels, so as to avoid the precipitation of excessive element residues, prolong the service life and improve the cutting effect

Inactive Publication Date: 2019-10-25
南京思甲宁新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, during the polishing process, some small impurities on the surface of the aluminum alloy hub are difficult to remove. In addition, when the polished hub is inspected with fluorescent light, it will be found that there are many small bright spots or unevenness on the surface (polished surface) of the hub. The phenomenon seriously affects the appearance of the wheel hub, and even causes the produced hub to be scrapped in batches and a large number of defective products

Method used

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  • Aluminum alloy bar for automobile hub and automobile hub
  • Aluminum alloy bar for automobile hub and automobile hub

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] An aluminum alloy bar material for an automobile wheel hub, comprising the following elemental components in mass percentage: Cu 2.7%, Mg 0.5%, Mn 0.5%, Si 0.6%, RE 0.1%, M X (N,B) Y 0.6%, FeX (N,B) Y For metal nitride, metal boride, M includes V, Ti, Hf.

[0035] in,

[0036] RE is a mixture of Sc, Ce, and Pr, and the mass ratio of the three is Sc 60wt%, Ce 30wt%, and Pr 10wt%;

[0037] m X (N,B) Y Medium metal nitride M X N Y The content ratio is 40wt%, the metal boride M X B Y The proportion of the content is 60wt%, and the proportion of the metal element V is more than 50wt%, and the proportion of Ti is more than 35wt%.

[0038]Aluminum alloy bar material for automobile wheel hub, the preparation method is as follows:

[0039] 1) Take the material in proportion, place the raw material in an inert atmosphere for heat treatment for 1-2h, and then put the raw material into smelting in the order of Al, 1 / 2Mg, Mn, Si, Cu, Fe, 1 / 3RE (760-790°C ), after melting...

Embodiment 2

[0047] An aluminum alloy bar material for an automobile wheel hub, comprising the following element components in mass percentage: Cu 2.7%, Mg 0.7%, Mn 0.3%, Si 0.35%, RE 0.15%, M X (N,B) Y 0.8%, FeX (N,B) Y For metal nitride, metal boride, M includes V, Ti, Hf.

[0048] in,

[0049] RE is a mixture of Sc, Ce, and Pr, and the mass ratio of the three is Sc 65wt%, Ce 20wt%, and Pr 15wt%;

[0050] m X (N,B) Y Medium metal nitride M X N Y The content ratio is 45wt%, the metal boride M X B Y The proportion of content is 55wt%, and the proportion of metal element V is more than 50wt%, and the proportion of Ti is more than 35wt%.

[0051] The aluminum alloy bar stock for automobile wheel hub, preparation method is the same as embodiment 1, and its specific parameters are adjusted as follows:

[0052] Step 1) inert atmosphere is N 2 , Ar two mixed gas, the volume ratio of the two in the mixed gas is 1:1

[0053] The gas in step 2) is N 2 、C 2 Cl 6 One or more mixed gas...

Embodiment 3

[0056] An aluminum alloy bar material for an automobile wheel hub, comprising the following element components in mass percentage: Cu 3.0%, Mg 0.4%, Mn 0.5%, Si 0.4%, RE 0.15%, M X (N,B) Y 0.5%, FeX (N,B) Y For metal nitride, metal boride, M includes V, Ti, Hf.

[0057] in,

[0058] RE is a mixture of Sc, Ce, and Pr, and the mass ratio of the three is Sc 55wt%, Ce 30wt%, and Pr 15wt%;

[0059] m X (N,B) Y Medium metal nitride M X N Y The content ratio is 45wt%, the metal boride M X B Y The proportion of content is 55wt%, and the proportion of metal element V is more than 50wt%, and the proportion of Ti is more than 35wt%.

[0060] The aluminum alloy bar stock for automobile wheel hub, preparation method is the same as embodiment 1, and its specific parameters are adjusted as follows:

[0061] The inert atmosphere in step 1) is Ar.

[0062] The gas in step 2) is N 2 , Cl 2 Mixed gas, calculated on the basis of 100L molten metal, the gas input rate is 3.5L / h; the r...

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Abstract

The invention provides an aluminum alloy bar for an automobile hub and the automobile hub. The aluminum alloy bar for the automobile hub comprises following elements and components including, by masspercent, 2.2%-3.1% of Cu, 0.4%-0.7% of Mg, 0.3%-0.5% of Mn, 0.25%-0.4% of Si, 0.05%-0.15% of RE, 0.2%-1.0% of MX(N,B)Y, smaller than 0.5% of Fe, smaller than or equal to 0.005% of In, smaller than 0.005% of Be and the balance Al and inevitable impurities, wherein MX(N,B)Y is metal nitride and metal boride, and M comprises V, Ti and Hf. Through reasonable selecting and matching of the raw materials, the technology is reasonably optimized, the elements are evenly fused in an alloy phase structure, the grain refining degree is high, excellent mechanical performance is achieved, the problems aboutinner stress and impurity cracks are obviously reduced, the manufactured product qualification rate reaches up to 100%, and the service life is prolonged by 80% or above.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy materials, in particular to an aluminum alloy bar material for an automobile wheel hub and the automobile wheel hub. Background technique [0002] In the fierce competition in the world automobile market, all countries are developing in the direction of high quality, high reliability, light weight, energy saving, and long service life. The development of automobiles requires high quality and low cost. [0003] The wheel hub is an important part of the car. 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 car wheels at home and abroad have been made of aluminum alloy materials. become. [0004] 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, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/16C22C1/02C22C1/06C22F1/057B60B3/00
CPCB60B3/00B60B2360/104C22C1/026C22C1/03C22C1/06C22C21/16C22F1/057
Inventor 平步青
Owner 南京思甲宁新材料科技有限公司
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