Vehicle hub surface treatment process

An automobile wheel hub and surface treatment technology, which is applied in the field of surface treatment of auto parts, can solve the problems such as the inability to improve the corrosion resistance of the wheel hub, and achieve the effects of improving the corrosion resistance performance, being less prone to spots and having a smooth surface.

Active Publication Date: 2016-01-13
HEXIAN LONGSHENG PRECISION MACHINERY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the present invention, after the aluminum alloy wheel hub is mechanically polished and the oxide layer is removed, an electrolytic solution with a higher acid concentration is used to perform the first electrolytic polishing, and rough polishing is performed on the part with a lar

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A kind of automobile wheel hub surface treatment process, comprises the following steps:

[0029] (1) Degreasing: stick the degreasing agent on the brush, and then use the brush to wipe off the oil on the surface of the car hub;

[0030] (2) Alkali washing: use a high-pressure water gun tank to rinse the surface of the car wheel hub twice with an alkaline solution, and the temperature of the alkaline solution is 40°C;

[0031] (3) Water washing: use a high-pressure water gun tank to rinse the surface of the car wheel hub twice with pure water, and the temperature of the pure water is 30°C;

[0032] (4) Electrolytic rough polishing: use 20% sulfuric acid, 20% phosphoric acid and 0.2% additive to mix into an acidic electrolytic solution to carry out rough polishing on the surface of the automobile wheel hub;

[0033] (5) Electrolytic fine polishing: use 15% sulfuric acid, 20% hydrofluoric acid and 0.5% stabilizer to mix into an acidic electrolytic solution to carry out f...

Embodiment 2

[0047] A kind of automobile wheel hub surface treatment process, comprises the following steps:

[0048] (1) Degreasing: stick the degreasing agent on the brush, and then use the brush to wipe off the oil on the surface of the car hub;

[0049] (2) Alkali washing: Use a high-pressure water gun tank to rinse the surface of the car wheel once with an alkaline solution, and the temperature of the alkaline solution is 60°C;

[0050] (3) Water washing: use a high-pressure water gun tank to rinse the surface of the car wheel hub with pure water for 3 times, and the temperature of the pure water is 50°C;

[0051] (4) Electrolytic rough polishing: use 30% sulfuric acid, 40% phosphoric acid and 0.5% additive to mix into an acidic electrolytic solution to rough polish the surface of the automobile wheel hub;

[0052] (5) Electrolytic fine polishing: use 20% sulfuric acid, 30% hydrofluoric acid and 1% stabilizer to mix into an acidic electrolytic solution to carry out fine polishing on ...

Embodiment 3

[0066] A kind of automobile wheel hub surface treatment process, comprises the following steps:

[0067] (1) Degreasing: stick the degreasing agent on the brush, and then use the brush to wipe off the oil on the surface of the car hub;

[0068] (2) Alkali washing: use a high-pressure water gun tank to rinse the surface of the car wheel hub twice with an alkaline solution, and the temperature of the alkaline solution is 50°C;

[0069] (3) Water washing: use a high-pressure water gun tank to rinse the surface of the car wheel hub twice with pure water, and the temperature of the pure water is 40°C;

[0070] (4) Electrolytic rough polishing: use 25% sulfuric acid, 30% phosphoric acid and 0.35% additive to mix into an acidic electrolytic solution to carry out rough polishing on the surface of the automobile hub;

[0071] (5) Electrolytic fine polishing: use 17.5% sulfuric acid, 25% hydrofluoric acid and 0.75% stabilizer to mix into an acidic electrolytic solution to carry out fin...

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PUM

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Abstract

The invention discloses a vehicle hub surface treatment process, and relates to the field of surface treatment of vehicle parts. The vehicle hub surface treatment process comprises ten process steps of (1) oil stain removal-(2) alkali washing-(3) water washing-(4) electrolytic rough polishing-(5) electrolytic finish polishing-(6) acid leaching-(7) water washing-(8) nickel plating-(9) water washing and drying-(10) paint spraying; firstly, oil stains are thoroughly removed to lay excellent foundation for subsequent machining process; in addition, the acid leaching treatment is performed after the electrolytic rough polishing and the electrolytic finish polishing, so that the surface of a vehicle hub is cleaned smoothly to prepare for subsequent nickel plating; then, the water washing and the drying are performed; finally, the paint spraying and the curing are performed, so that the surface of the vehicle hub is smooth, a corrosion resistant layer is formed, the corrosion resistance is improved, and the service life of the vehicle hub is prolonged; and the vehicle hub surface treatment process, provided by the invention, is simple and reasonable in process steps, enables the surface of the vehicle hub to become smooth, is strong in corrosion resistance, and prolongs the service life.

Description

technical field [0001] The invention relates to the field of surface treatment of automobile parts, in particular to a surface treatment process of an automobile wheel hub. Background technique [0002] In the 20th century, with the development of society, the demand for automobiles is also increasing. Wheels are an important component of automobiles. The performance of wheels is directly related to the performance of the entire automobile. [0003] However, the surface of the automobile wheel in the prior art is not smooth enough, the corrosion resistance is poor, the service life is short, and the surface treatment process of the automobile wheel is relatively complicated, which increases the production cost. [0004] In view of the above problems, many improvements have been made in the prior art. For example, the Chinese Publication No. CN104746074A discloses a surface treatment method for a magnesium alloy wheel hub, which includes grinding the surface of a magnesium al...

Claims

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Application Information

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IPC IPC(8): C23G1/22C25F3/20C23F17/00C25D3/56
Inventor 程东华徐良明
Owner HEXIAN LONGSHENG PRECISION MACHINERY CO LTD
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