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A Surface Treatment Process for Aluminum Alloy Cylinder Head

A surface treatment and cylinder head technology, applied in metal processing equipment, manufacturing tools, abrasives, etc., can solve the problems of high labor intensity, low polishing brightness, rust of aluminum alloy cylinder heads, etc., and achieve the effect of improving brightness and uniformity

Active Publication Date: 2022-01-07
广州和信实业有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of manual polishing are high labor intensity, low efficiency, the quality of polishing is affected by the technical level and responsibility of the operator, the product consistency is poor, and the dust pollution is serious during polishing, which is prone to explosion accidents. This state seriously restricts the aluminum alloy cylinder head. industry development
A small part adopts mechanical polishing. At present, machine polishing mostly adopts the traditional grinding wheel polishing method, which can only adapt to the processing of single and simple aluminum alloy cylinder heads.
It is quite difficult to deal with aluminum alloy cylinder heads with various structures, shapes and sizes
[0005] Moreover, the current polishing process for the aluminum alloy cylinder head is relatively simple, and both of them have the defects of low polishing brightness and uneven polishing, which may easily cause rust in the actual use of the aluminum alloy cylinder head and affect the service life

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] This embodiment provides an aluminum alloy cylinder head surface treatment process, including the following steps:

[0028] 1) Deburring: Use a high-pressure spray gun to spray sand onto the aluminum alloy cylinder head, and take out the aluminum alloy cylinder head after continuous spraying for 25 seconds. The sand is plastic sand with a particle size of 0.2mm;

[0029] 2) Degreasing: Put the aluminum alloy cylinder head into a mixed solution of acetone, ethanol and sodium silicate with a volume percentage of 1:1:1 for 45 seconds;

[0030] 3) Low-temperature immersion: Place the aluminum alloy cylinder head in a closed liquid nitrogen pool for immersion, control the temperature of the liquid nitrogen at -45°C for 10 minutes, then lower the temperature of the liquid nitrogen to -75°C for 10 minutes 17min;

[0031] 4) Projectile preparation: add 19 parts of benzoic acid, 17 parts of iodic acid, 17 parts of hydrofluoric acid, 18 parts of concentrated phosphoric acid, 13 ...

Embodiment 2

[0040] This embodiment provides an aluminum alloy cylinder head surface treatment process, including the following steps:

[0041] 1) Deburring: Use a high-pressure spray gun to spray sand onto the aluminum alloy cylinder head, and take out the aluminum alloy cylinder head after continuous spraying for 23 seconds. The sand is plastic sand with a particle size of 0.1mm;

[0042] 2) Degreasing: Put the aluminum alloy cylinder head into a mixed solution of acetone, ethanol and sodium silicate with a volume percentage of 1:1:1 for 35 seconds;

[0043] 3) Low-temperature immersion: Place the aluminum alloy cylinder head in a closed liquid nitrogen pool for immersion, control the temperature of the liquid nitrogen at -30°C for 5 minutes, then lower the temperature of the liquid nitrogen to 60°C for a period of time 16min;

[0044] 4) Preparation of pellets: add 17 parts of benzoic acid, 18 parts of iodic acid, 18 parts of hydrofluoric acid, 16 parts of concentrated phosphoric acid, 1...

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Abstract

The invention provides a surface treatment process for an aluminum alloy cylinder head, including: burrs—greasing—low temperature immersion—projectile preparation—shot blasting—ultrasonic vibration—pre-cleaning—jet polishing—soaking at room temperature—post-cleaning—drying, through the above The implementation of the technological process enables the aluminum alloy cylinder head to be fully polished, effectively improving the brightness and uniformity of the surface polishing of the aluminum alloy cylinder head.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy cylinder heads, in particular to a surface treatment process for aluminum alloy cylinder heads. Background technique [0002] With the development of the automobile industry, the family car is popularized rapidly, and its fuel-saving performance has been paid more and more attention by people. By using lightweight materials and reasonable structural design, reducing the mass of the vehicle can effectively reduce fuel consumption. If the mass of the vehicle is reduced by 1%, it can save fuel by 0.6% to 1.0%. The effect of lightweight moving parts is more obvious. The engine is the core component of the car, and its mass accounts for about 20% to 30% of the vehicle's mass, while the cylinder block and cylinder head are the castings with the most complex structure and the largest mass in the engine, accounting for about 25% to 35% of the engine's mass. Therefore, the lightweight of the cylind...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C23F17/00C23G5/032B24C7/00B24C1/08
CPCC23F17/00C23G5/032B24C1/083B24C7/0046
Inventor 蔡璟
Owner 广州和信实业有限责任公司