KR20120134680A

KR20120134680A - Aluminum alloy of air compressor

Info

Publication number: KR20120134680A
Application number: KR1020110053771A
Authority: KR
Inventors: 전성옥
Original assignee: 우수에이엠에스 주식회사
Priority date: 2011-06-03
Filing date: 2011-06-03
Publication date: 2012-12-12

Abstract

The aluminum alloy material for the air compressor of the present invention is Cu 0.025 ~ 0.25 wt%, Si 6.5 ~ 7.5 wt%, Fe 0.15 ~ 0.4 wt%, Mg 0.25 ~ 0.45 wt%, Mn 0.04 ~ 0.35 wt%, Zn 0.02 ~ 0.35 wt %, 0.014 to 0.1 wt% Ni, 0.1 to 0.2 wt% Ti, 0.01 to 0.2 wt% Cr, 0.007 to 0.05 wt% Sn, and 90.15 to 92.884 wt% Al.
As described above, the air compressor of the brake device for a vehicle according to the present invention, each of the cylinder head and the crankcase is formed by using a lightweight aluminum alloy material, respectively, the overall load is reduced when mounted on the vehicle, the fuel economy is improved, the engine Its efficiency and cooling effect is improved, and the workability is improved to have the effect of mass production of each part.

Description

Aluminum alloy material for air compressor

The present invention relates to an aluminum alloy material for an air compressor, and more particularly to an aluminum alloy material for an air compressor in which the cylinder head and the crankcase of the air compressor used in the braking device are made of a high strength aluminum alloy.

In general, an air compressor mounted on a wheel of a vehicle and used for a braking device allows the vehicle to be braked by the air pressure generated by the operation of the piston, and the housing is made of cast iron, thereby reducing efficiency due to reduced workability and cooling effect. And, there was a problem that the performance of the engine is lowered due to the load of cast iron.

In addition, the lubrication characteristics are disadvantageous, the durability life is low, the amount of oil consumption during the operation of the air compressor has a problem of environmental pollution due to contamination of the discharged air.

In order to solve the problems described above, the present invention provides an aluminum alloy material for an air compressor, the cylinder head and the crankcase is formed of a lightweight aluminum alloy material, so that the efficiency, cooling effect of the air compressor is improved and fuel economy is improved. The purpose is to.

The aluminum alloy material for the air compressor of the present invention is Cu 0.025 ~ 0.25 wt%, Si 6.5 ~ 7.5 wt%, Fe 0.15 ~ 0.4 wt%, Mg 0.25 ~ 0.45 wt%, Mn 0.04 ~ 0.35 wt%, Zn 0.02 ~ 0.35 wt %, 0.014 to 0.1 wt% Ni, 0.1 to 0.2 wt% Ti, 0.01 to 0.2 wt% Cr, 0.007 to 0.05 wt% Sn, and 90.15 to 92.884 wt% Al.

In addition, the aluminum alloy material for the air compressor is a hardness is formed within 90 ~ 105.

As described above, the air compressor of the brake device for a vehicle according to the present invention, each of the cylinder head and the crankcase is formed by using a lightweight aluminum alloy material, respectively, the overall load is reduced when mounted on the vehicle, the fuel economy is improved, the engine Its efficiency and cooling effect is improved, and the workability is improved to have the effect of mass production of each part.

In addition, the lubrication characteristics are improved, the oil consumption during the operation of the air compressor is reduced, and the pollution of the discharge air is prevented is another effect that can prevent the environmental pollution.

1 is a microstructure state diagram of an aluminum alloy material according to the present invention

Hereinafter, a preferred embodiment according to the configuration of the aluminum alloy material for an air compressor according to the present invention will be described in detail with the accompanying drawings.

1 is a microstructure state diagram of an aluminum alloy material according to the present invention.

The aluminum alloy material for the air compressor of the present invention is Cu 0.025 ~ 0.25 wt%, Si 6.5 ~ 7.5 wt%, Fe 0.15 ~ 0.4 wt%, Mg 0.25 ~ 0.45 wt%, Mn 0.04 ~ 0.35 wt%, Zn 0.02 ~ 0.35 wt %, Ni 0.014 ~ 0.1 wt%, Ti 0.1 ~ 0.2 wt%, Cr 0.01 ~ 0.2 wt%, Sn 0.007 ~ 0.05 wt%, the remainder is formed of aluminum.

As shown in FIG. 1, the microstructure of the present invention is formed in a uniform state without shrinkage and abnormality caused by foreign matter, and Si of the elements added together is added to improve castability. Since cracks occur in the product, it is preferable to add 6.5 to 7.5% by weight.

In addition, a small amount of Mg is added in order to improve the strength. The Mg may be added at 0.25 to 0.45% by weight to form an intermetallic compound with Si, which may have a large effect on the strength improvement.

In particular, in the present invention, 0.04 ~ 0.35% by weight Mn, 0.025 ~ 0.25% by weight Cu is added to improve the mechanical properties and corrosion resistance of the aluminum alloy material, the Cu is lifted by a piston that is elevated inside the cylinder liner The thermal conductivity generated is to be improved. In addition, Ti to 0.1 to 0.2% by weight is added to give a micronized effect of the grains.

The aluminum alloy material for the air compressor thus formed is formed to have a hardness of 90 to 105 or less, and the cylinder head, the cylinder liner, and the crankcase are formed using the aluminum alloy material, thereby reducing the weight of the air compressor compared to the cast iron used in the vehicle. Fuel efficiency is improved when installed, and the compression volume efficiency can be greatly improved by improving the exothermic cooling characteristics due to the high heat transfer characteristics of aluminum.

In addition, the oil consumption is reduced by improving the lubrication durability, and the endurance life is at least 150,000 to 250,000 km from the previous 100,000 to 120,000 km has an effect of improving the durability more than 50%.

As the aluminum alloy material for an air compressor according to the present invention, a conventional die casting method of injecting a molten aluminum alloy through a molten metal inlet of a mold is used.

As described above, the air compressor of the brake device for a vehicle according to the present invention, each of the cylinder head and the crankcase is formed by using a lightweight aluminum alloy material, respectively, the overall load is reduced when mounted on the vehicle, the fuel economy is improved, the engine Its efficiency and cooling effect are improved, and its machinability is improved, so that each part can be mass-produced, and its lubrication characteristics are improved, which reduces oil consumption during operation of the air compressor, and prevents pollution of the discharged air to prevent environmental pollution. It can be effective.

The present invention is not limited to the preferred embodiments of the above-described features, and various modifications can be made by those skilled in the art without departing from the gist of the present invention as claimed in the claims. Of course, such changes will fall within the scope of the claims.

Claims

0.025 to 0.25 wt% Cu, 6.5 to 7.5 wt% Si, 0.15 to 0.4 wt% Fe, 0.25 to 0.45 wt% Mg, 0.04 to 0.35 wt%, Zn 0.02 to 0.35 wt%, Ni 0.014 to 0.1 wt%, Ti An aluminum alloy material for an air compressor, characterized in that formed from 0.1 to 0.2% by weight, Cr 0.01 to 0.2% by weight, Sn 0.007 to 0.05% by weight, Al 90.15 to 92.884% by weight.

The method of claim 1,
The aluminum alloy material for the air compressor is an aluminum alloy material for an air compressor, characterized in that the hardness is formed within 90 ~ 105.