OEM Factory Aluminum Die Casting Sand Casting Gravity Casting Products

 

Surface treatment process of aluminum alloy

Aluminum alloy, as a lightweight and high-strength metal material, is widely used in fields such as aviation, automobiles, and construction. In order to improve the corrosion resistance, aesthetics, and functionality of aluminum alloys, a series of surface treatment processes are usually required. The following are common surface treatment processes for aluminum alloys:

1. Mechanical polishing

Mechanical polishing is the process of using polishing machinery and polishing media to cause micro deformation on the surface of aluminum alloys, thereby achieving a smooth and bright surface effect. Commonly used polishing media include abrasives, polishing paste, etc. After mechanical polishing treatment, the surface of aluminum alloy can obtain a mirror like luster.

2. Chemical polishing

Chemical polishing is the process of dissolving and smoothing the surface of aluminum alloys through chemical reactions. In the process of chemical polishing, acidic or alkaline chemical reagents such as nitric acid, chromic acid, etc. are usually used to corrode the surface of aluminum alloy into a thin film, and then rinse it clean with water to achieve surface smoothness. After chemical polishing treatment, the surface of aluminum alloy can obtain a relatively uniform luster.

3. Electrochemical polishing

Electrochemical polishing is the process of applying an electric current to the surface of an aluminum alloy, causing it to undergo electrochemical reactions, thereby removing surface defects and refining surface roughness. In the electrochemical polishing process, electrolytes and high current density power sources, such as DC or pulse power sources, are usually used. After electrochemical polishing treatment, the surface of aluminum alloy can achieve high gloss and excellent corrosion resistance.

4. Anodizing

Anodizing is a method of producing a dense oxide film on the surface of aluminum alloys through anodizing treatment. During the anodic oxidation process, aluminum alloy serves as an anode material and is energized in an electrolyte solution, causing the surface to oxidize and form a thin and dense oxide film. This oxide film has high corrosion resistance and insulation, while also improving the hardness and wear resistance of the aluminum alloy surface. After anodizing treatment, the surface of aluminum alloy can achieve a diverse color appearance effect.

5. Spray treatment

Spray coating is a method of evenly spraying paint onto the surface of aluminum alloy. Spraying treatment can improve the corrosion resistance, aesthetics, and functionality of aluminum alloy surfaces. According to the different properties of coatings and spraying processes, spraying treatment can be divided into various forms such as electrostatic spraying, powder spraying, liquid spraying, etc. Electrostatic spraying is the process of evenly adsorbing coatings onto the surface of aluminum alloys through electrostatic action; Powder spraying is the process of evenly spraying powder like coatings onto the surface of aluminum alloys; Liquid spraying is the process of evenly spraying liquid coatings onto the surface of aluminum alloys. After spraying treatment, the surface of aluminum alloy can obtain various colors and appearance effects.

6. Electrolytic coloring

Electrolytic coloring is a method of coloring the surface of aluminum alloys through electrolysis. During the electrolytic coloring process, aluminum alloy serves as a cathode material and is electrified in the electrolyte solution, causing oxidation reactions on the surface and generating metal oxides. These metal oxides will adsorb ions in the solution and form thin films of different colors, thereby achieving a coloring effect. After electrolytic coloring treatment, the surface of aluminum alloy can obtain various colors and appearance effects.

7. Chemical coloring

Chemical coloring is a method of coloring the surface of aluminum alloys through chemical reactions. In the process of chemical coloring, acidic or alkaline chemical reagents are usually used to react with the surface of aluminum alloys, forming a thin film with color. This thin film can be metal oxides, hydroxides, or sulfides formed through chemical reactions. After chemical coloring treatment, the surface of aluminum alloy can obtain various colors and appearance effects.

8. Anodic oxidation dyeing

Anodic oxidation dyeing is a method of forming an oxide film on the surface of aluminum alloys and achieving coloring through anodic oxidation treatment. During the anodic oxidation dyeing process, aluminum alloy serves as the anode material and is energized in an electrolyte solution, resulting in the formation of a colored oxide film on the surface. The color of this oxide film can be achieved by changing the composition of the electrolyte and electrolysis conditions to achieve different color effects. After anodizing and dyeing treatment, the surface of aluminum alloy can achieve a diverse color appearance effect.

 

 

 

 

Basic Information

Total Capitalization	less than US$50,000
Country / Region	China
Year Established	2014
Total Employees	100 to 149
Business Type	Exporter, Manufacturer, Trading Company

 

Trading Capabilities

Total Annual Sales	less than US$50,000
Export Percentage	90 percent to 94 percent
OEM Services	Yes
Small Orders Accepted	Yes
Brand Names	Innolead
Payment Terms	TT
Main Competitive Advantages	Experienced R&D Department, Large Product Line, ODM (Original Designing & Manufacturing), OEM Capability, Production Capacity, Reliability, Reputation
Other Competitive Advantages	NA
Major Customer	Soprano, European Thermodynamics Ltd.
Export Markets	Australasia, Central/South America, Eastern Europe, Mid East/Africa, North America, Western Europe

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CONTACT US

Alex He

Tel:+86 15989331617

Whatsapp&Wechat:+86 15989331617

Skype ID:alex.ho43

Email: alex.he@innolead.net

 

Web:www.innolead.net

 

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