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Bright engine cylinder cover surface treatment method

A technology for engine cylinder and surface treatment, which is applied in the field of bright engine cylinder head surface treatment, which can solve the problems of no anti-corrosion effect and insufficient brightness of the cylinder head surface, etc., and achieve a good effect of high resistance to discoloration

Active Publication Date: 2015-12-30
WUHU YONGYU AUTOCAR INDAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] To sum up, whether it is a single shot peening treatment or a mixed treatment technology of shot peening and chromate, the aluminum alloy cylinder head has major disadvantages, the surface of the cylinder head is not bright enough, and it does not have anti-corrosion effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The present embodiment provides a kind of surface treatment method of bright engine cylinder head, comprises the steps:

[0038] (1) Electrolysis process: in the electrolyte solution arranged in the electrolytic cell, the cylinder head is electrolyzed;

[0039] In the electrolyte, the concentration of sodium sulfate is 15g / L, the concentration of zinc oxide is 3g / L, the concentration of sodium peroxide is 3g / L, the concentration of sodium dodecylsulfonate is 2g / L, and the balance is water; the electrolytic current density 1A / dm 2 , The electrolysis time is 5 minutes.

[0040] (2) Soaking process: put the electrolyzed cylinder head into the protective solution and soak for 30 seconds;

[0041] (3) Curing process: After the cylinder head is pulled out, use a high-pressure air gun to blow off the excess sol gel hanging on the surface of the cylinder head, and dry the cylinder head naturally to cure, so that the surface of the cylinder head can prevent aluminum alloy from...

Embodiment 2

[0043] The present embodiment provides a kind of surface treatment method of bright engine cylinder head, comprises the steps:

[0044] (1) Electrolysis process: in the electrolyte solution arranged in the electrolytic cell, the cylinder head is electrolyzed;

[0045] In the electrolyte, the concentration of sodium sulfate is 18g / L, the concentration of zinc oxide is 3.5g / L, the concentration of sodium peroxide is 4g / L, the concentration of sodium dodecylsulfonate is 1g / L, and the balance is water; The density is 2A / dm 2 , The electrolysis time is 4 minutes.

[0046] (2) Soaking process: put the electrolyzed cylinder head into the protective solution and soak for 30 seconds;

[0047] (3) Curing process: After the cylinder head is pulled out, use a high-pressure air gun to blow off the excess sol gel hanging on the surface of the cylinder head, and dry the cylinder head naturally to cure, so that the surface of the cylinder head can prevent aluminum alloy from forming. Disco...

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Abstract

The invention discloses a bright engine cylinder cover surface treatment method. The bright engine cylinder cover surface treatment method comprises the following steps of electrolysis procedure: performing electrolysis on a cylinder cover in electrolyte arranged in an electrolytic bath; soaking procedure: soaking the electrolyzed cylinder cover in protection liquid; and solidifying procedure: solidifying the soaked cylinder cover so that a protection film is formed on the surface of the cylinder cover. The electrolyte contains sodium sulfate with concentration of 18g / L, zincite with concentration of 3.5g / L, sodium superoxide with concentration of 4g / L, sodium alkyl sulfonate with concentration of 1g / L, and the balanced water. By the engine cylinder cover surface treatment method, the surface of the cylinder cover can be clean, burnt-on sand of an inner duct of the cylinder cover can be removed, a black or grey surface caused by shot blasting is avoided, the protection film capable of preventing mildew spots is obtained, and has good discoloration resistance and corrosion resistance, the bright and attractive cylinder cover can be obtained, and the cylinder cover has effects of preventing corrosion and mildew spots.

Description

technical field [0001] The invention belongs to the technical field of engines, in particular, the invention relates to a surface treatment method of a bright engine cylinder head. Background technique [0002] Aluminum alloy cylinder head is a common engine component for small axle vehicles. Compared with cast iron cylinder head, it has the advantages of light specific gravity, low difficulty in casting and processing, and is widely used in small vehicles. [0003] The composition of aluminum alloy cylinder head is generally aluminum-silicon alloy, which has the advantages of good casting performance and high mechanical properties, but the silicon content in the alloy also brings difficulties to surface treatment. [0004] At present, for the surface treatment of aluminum alloy cylinder heads, sandblasting or shot peening is mainly used. In order to save costs, the raw materials for sandblasting or shot peening, sand or steel shot, are reused. [0005] A large amount of oi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25F1/04
Inventor 郑志勋
Owner WUHU YONGYU AUTOCAR INDAL
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