Aluminum alloy cylinder body and ceramic treatment method thereof

A processing method and aluminum alloy technology, applied in the direction of anodic oxidation, electrolytic coating, surface reaction electrolytic coating, etc., can solve the problems of many casting defects, high manufacturing cost, failure to reach the cylinder body, etc., and achieve excellent lubricating performance and use The effect of long life and no discharge

Inactive Publication Date: 2017-12-08
NEW MATERIAL INST OF SHANDONG ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

my country's aluminum alloy cylinder casting has many defects, low efficiency and high manufacturing cost
The wear resistance is poor, which is far from meeting the requirements of the cylinder block
The commonly used method is electroplating hard chromium. However, "chromium" is a very toxic heavy metal, which brings great harm to the human body and serious pollution to the environment.

Method used

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  • Aluminum alloy cylinder body and ceramic treatment method thereof
  • Aluminum alloy cylinder body and ceramic treatment method thereof
  • Aluminum alloy cylinder body and ceramic treatment method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] This embodiment provides an aluminum alloy cylinder body, which is mainly processed by the following methods:

[0032] The air intake hole and exhaust hole of the cylinder block are closed with corks, and the combined cathode is installed at the center of the cylinder block. Start the circulation pump, input the electrolyte in the electrolytic cell into the liquid storage tank, and then connect it to the cylinder. The electrolyte flows out through the spark plug hole on the upper part of the cylinder block, and then returns to the electrolytic tank through the overflow tank.

[0033] Wherein, the electrolyte includes: sodium hexametaphosphate, film forming agent and potassium carbonate. The dosage ratio of sodium hexametaphosphate and film forming agent is 8g / L:1g / L. The pH of the electrolyte is 8. The film-forming agent includes potassium titanium oxalate and sodium oxalate in a mass ratio of 8:1.

[0034] The positive pole of the micro-arc oxidation power supply i...

Embodiment 2

[0036] This embodiment provides an aluminum alloy cylinder body, which is mainly processed by the following methods:

[0037] The air intake hole and exhaust hole of the cylinder block are closed with corks, and the combined cathode is installed at the center of the cylinder block. Start the circulation pump, input the electrolyte in the electrolytic cell into the liquid storage tank, and then connect it to the cylinder. The electrolyte flows out through the spark plug hole on the upper part of the cylinder block, and then returns to the electrolytic tank through the overflow tank.

[0038] Wherein, the electrolyte includes: sodium hexametaphosphate, film forming agent and sodium carbonate. The dosage ratio of sodium hexametaphosphate and film forming agent is 50g / L:7g / L. The pH of the electrolyte was 9. The film-forming agent includes potassium titanium oxalate and sodium oxalate in a mass ratio of 12:1.

[0039]The positive pole of the micro-arc oxidation power supply is...

Embodiment 3

[0042] This embodiment provides an aluminum alloy cylinder body, which is mainly processed by the following methods:

[0043] The air intake hole and exhaust hole of the cylinder block are closed with corks, and the combined cathode is installed at the center of the cylinder block. Start the circulation pump, input the electrolyte in the electrolytic cell into the liquid storage tank, and then connect it to the cylinder. The electrolyte flows out through the spark plug hole on the upper part of the cylinder block, and then returns to the electrolytic tank through the overflow tank.

[0044] Wherein, the electrolyte includes: sodium hexametaphosphate, film forming agent, sodium carbonate, potassium carbonate and sodium hydroxide. The dosage ratio of sodium hexametaphosphate and film forming agent is 40g / L:7g / L. The pH of the electrolyte is 8. The film-forming agent includes potassium titanium oxalate and sodium oxalate at a mass ratio of 9:1.

[0045] The positive pole of t...

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Abstract

The invention provides an aluminum alloy cylinder body and a ceramic treatment method thereof, and relates to the technical field of light metal surface treatment. The ceramic treatment method of the aluminum alloy cylinder body comprises the steps that an electrolytic solution which comprises sodium hexametaphosphate, a film-forming agent and a pH regulator is fed into a cylinder body, and microarc oxidation treatment is carried out. The ceramic treatment method is simple in preparation technological process, high in controllability, low in preparation cost, and high in environmental-friendly degree, and is suitable for mass production. The aluminum alloy cylinder body is prepared through the treatment of the ceramic treatment method of the aluminum alloy cylinder body. The aluminum alloy cylinder body is provided with a ceramic oxidation film layer, so that the density and the intensity are high, the uniformity is good, and the aluminum alloy cylinder body is good in abrasive resistance, high in hardness, long in service life and excellent in lubricating property.

Description

technical field [0001] The invention relates to the technical field of light metal surface treatment, and in particular to an aluminum alloy cylinder body and a ceramic treatment method thereof. Background technique [0002] The cylinder block is one of the most important parts of the engine. In the early days, cylinder blocks were almost always made of gray cast iron. In recent years, while pursuing the "lightweight" of equipment, people have also tried to "substitute steel with aluminum" for various engine blocks, and have made significant progress. The aluminum alloy engine has the characteristics of light weight, good heat dissipation, high performance and low energy consumption, and has attracted people's attention. However, the development of aluminum alloy engines in China has encountered some obstacles, one of the biggest obstacles being the aluminum alloy cylinder block. my country's aluminum alloy cylinders have many casting defects, low efficiency and high manu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D11/08C25D11/18
CPCC25D11/024C25D11/026C25D11/08C25D11/18
Inventor 房爱存陈燕飞周吉学刘洪涛宋晓村杨院生唐守秋
Owner NEW MATERIAL INST OF SHANDONG ACADEMY OF SCI
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