Color Aluminum Tube - GangHua Iron & Steel

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Color Aluminum Tube

The oxidation coloring of aluminum is a chemical change, which mainly uses artificial methods to oxidize the surface of aluminum and its alloys.

Oxidation Method

In the oxidation coloring of aluminum, an oxide film (Al₂O₃) is formed on the surface of aluminum and its alloy products by artificial methods, and different colors are applied to improve the wear resistance of aluminum materials, prolong the service life and increase the color and luster. The basic process of oxidation coloring is aluminum surface treatment, oxidation, coloring and subsequent hydration sealing, organic coating and other treatment processes.

Colored alumina tube

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Product Specifications

Product Name	Colored Aluminum Tube
Alloy Material	1070/2024/3003/5052/6061/6063/7075, etc.
Wall Thickness	0.2mm-40mm or as required
Outer Diameter	4mm-300mm or as required
Length	1m-12m or as required
Color	Customized according to customer requirements
Deep process	CNC, drilling, milling, cutting, welding, bending, assembling
Packing	Standard Seaworthy Packing
Satisfy Your Needs	We can customize product specifications, sizes and shapes according to your requirements.
Contact	If you have any questinons, please feel free to contact. We are happy to answer your questions.

Oxidation Of Aluminum

The surface of aluminum maintains an oxide film of 10~100 angstroms under natural conditions, and the artificial oxide film is controlled to 0.5250 microns in thickness according to different purposes. The methods of artificial membrane generation include chemical oxidation and electrochemical oxidation (ie, anodic oxidation).

Chemical oxidation

The aluminum or aluminum alloy after surface purification treatment is chemically reacted in an oxidizing solution containing an oxidant and an activator to form an oxide film. The function of the activator is to partially dissolve the oxide film during the formation process, resulting in pores, so that the oxidation can continue and the oxide film can be thickened. There are many types of oxidizing solutions, often with chromate as the oxidant and carbonate as the active agent.

Anodizing

Also known as electrochemical oxidation, performed in an electrolyte solution such as oxalic acid or chromic acid. With aluminum as the anode, lead and other metals as the cathode, under the action of the DC electric field, the anion (OH) moves to the anode, and the new oxygen is generated at the anode to interact with the aluminum as the anode to form an oxide film. The acid in the electrolyte can locally dissolve the oxide film and generate pores, so that the oxidation reaction can develop in depth. This method forms a porous structure on the surface of aluminum, which can be used for various coloring treatments and can be used as the bottom layer of spray paint.

Coloring Method

The coloring methods of oxide film include chemical coloring, electrolytic coloring and natural coloring.

Chemical coloring

The oxidized aluminum material is immersed in an organic or inorganic dye solution, and the dye penetrates into the pores of the oxide film and is colored by chemical or physical action. The chemical coloring equipment is simple, the cost is low, and there are many kinds of colors, but the light resistance and corrosion resistance are poor, and it is only suitable for interior decoration.

Electrolytic coloring

The oxidized aluminum material is subjected to secondary electrolysis in a single metal salt or a variety of metal salt aqueous solutions. Under the action of an electric field, metal cations penetrate into the pores of the oxide film and deposit on the bottom of the pores, thereby causing oxidation Films produce bronze, brown, gray, and shades of red, cyan, and blue.

Natural coloring

A method in which aluminum is colored at the same time as anodizing. There are alloy coloring method and solution coloring method. The alloy color development method is to control the composition of the aluminum alloy to obtain different hues; the solution color development method, also known as the electrolytic color development method, is to control the composition of the electrolyte and the electrolysis conditions to control the hue. In actual production, organic acid is generally used as the electrolyte for natural coloring, and a small amount of sulfuric acid is added to adjust the PH.

Applications And Colors

We have a variety of colored aluminum tubes for you to choose from. Colored aluminum tubes are widely used in architectural decoration, household appliances, aerospace, military, machining of mechanical parts, door and window curtain wall decoration, decoration, etc. What color to choose depends entirely on your needs and preferences, if you want other colors or patterns , please contact us for custom design.

Note: Actual color may vary slightly due to coating material, light and other factors.

Welcome To Contact Us!

Ganghua Steel is a leading aluminum manufacturer and supplier in China. The factory has complete equipment, according to customer requirements can produce and process a variety of aluminum plate, aluminum coil, aluminum pipe, aluminum rod, aluminum foil, aluminum wire, etc. In addition, we also have professional color coating and oxidation process, to provide customers with different colors of aluminum plate, aluminum coil, aluminum pipe, aluminum wire and other products. As a manufacturer and supplier, we will make products for our customers and support third party quality inspection. Welcome to contact us to purchase aluminum, to give you the best quality and price!

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