Anodizing process, anodizing surface treatment process

Here's how it works.

Anode pretreatment: degreasing--salting-polishing-polishing-neutralization.

Treatment in anodice: oxidation.

Anode post-treatment: staining--sealing.

Caustic washing, hot water washing, cold water washing, Izumitsu, hot water washing, cold water washing, anodizing, water washing, sealing holes.

Basic process: degreasing - > alkali washing - > pickling - > out of the light - > film removal - > oxidation - > dyeing - > sealing.

What is Anodizing? How can I get anodizing in different colors?

AnodizingSurface treatment process:

After the surface anodization of metal materials or products, their corrosion resistance, hardness, wear resistance, insulation, heat resistance, etc. are greatly improved. The metal material that implements the most anodizing treatment is aluminum.

The anodizing of aluminum is generally in an acidic electrolyte.

, with aluminum as the anode. During electrolysis, the anion of oxygen.

It reacts with aluminum to produce an oxide film. This kind of film is not fine enough when it is first formed, and although it has a certain resistance, it has negative oxygen ions in the electrolyte.

It can still reach the surface of aluminum and continue to form an oxide film. As the thickness of the film increases, so does the resistance, resulting in a smaller electrolytic current.

At this time, the outer oxide film in contact with the electrolyte is chemically dissolved. When the rate at which oxides are formed on the surface of the aluminium is gradually balanced with the rate at which the chemical dissolvers are erected, the oxide film can reach the maximum thickness under this electrolytic parameter.

The anodized film of aluminum has a porous outer layer that easily adsorbs dyes and colored substances, so it can be dyed to improve its decoration. After the oxide film is sealed with hot water, high-temperature water vapor or nickel salt, its corrosion resistance and wear resistance can be further improved.

Anodizinganodic oxidation), electrochemical oxidation of metals or alloys. aluminum and its alloys in the corresponding electrolyte.

and the process of forming an oxide film on aluminum products (anodes) under specific process conditions due to the action of applied current. Anodizing usually refers to sulfuric acid anodizing, if not specifically specified.

In order to overcome the defects of aluminum alloy surface hardness, wear resistance, etc., expand the scope of application, prolong the service life, surface treatment.

Technology has become an indispensable part of the use of aluminum alloys, and anodizing technology is the most widely used and successful.

1.General Process Flow:

Aluminum workpiece, upper hanger, degreasing, washing, alkali etching, washing, polishing, washing, anodizing, washing, deionization, washing, dyeing or electrolytic coloring, washing, deionizing washing, sealing, washing, lower hanger.

2.High-brightness aluminum product process:

Aluminum workpiece: mechanical polishing, degreasing, washing, neutralization, washing, chemical or electrochemical polishing, washing, anodizing, washing, deionization washing, dyeing or electrolytic coloring, washing, deionization washing, sealing, washing, mechanical brightness.

The anodizing watch refinishing process requires the aluminum products to be cleaned and the surface dirt removed to ensure a clean surface.

Soak aluminum products in an acidic solution to remove oxide scale and surface impurities, and improve the effect of anodizing. Aluminum products are placed in an electrolytic cell containing an electrolyte (such as sulfuric acid, oxalic acid, etc.) as an anode, and a cathode is set at the same time. The DC voltage is not applied, so that the surface of the aluminum products produces an oxidation reaction to form a dense and uniform oxide film.

If you need to print color on the oxide film, you can soak the aluminum product in a dye solution to allow the dye to penetrate into the oxide film, and then fix the dyeing effect by drying or sealing. The anodized aluminum products are sealed to improve the corrosion resistance of the oxide film. Commonly used sealing methods include hot water sealing, hot-coat sealing, cold-coating sealing, etc.

The above are the general anodizing surface treatment process steps, and the specific process parameters and steps may vary according to different materials and requirements. Anodizing can improve the surface hardness, corrosion resistance and decoration of aluminum products, which are widely used in aerospace, construction, electronics, automotive and other fields. When carrying out anodizing surface treatment, attention should be paid to operational safety, and process control and quality inspection should be carried out according to specific drying requirements.

Precautions for anodizing surface treatment

1. Clean the surface: Before anodizing, ensure that the surface is clean and free of oil and impurities. Surfaces can be cleaned with specialized detergents or solvents to ensure that the surface is free of any dirt.

2. Avoid scratches: The anodized surface often has a certain hardness, but it is easy to scratch during the treatment process. Therefore, care should be taken to avoid contact with hard objects during operation to avoid scratching the surface.

3. Control the concentration and temperature of the electrolyte: In the process of anodic oxidation, the concentration and temperature of the electrolyte have an impact on the treatment effect. The concentration and temperature of the electrolyte should be controlled according to the specific requirements and the properties of the material to ensure the stability of the treatment effect.

4. Control the treatment time: the treatment time of anodizing is also an important factor affecting the treatment effect. Excessive treatment time may lead to excessive oxidation, while short treatment time may result in uneven surface finishing.

The processing time should be controlled according to the specific requirements and the nature of the material.

Summary. Dear, I'm glad to answer for you that formation and anodizing are the same process, and they have a certain difference between anodizing and chemical oxidation: 1. Does electricity be needed:

Anodizing is carried out under the condition of high voltage electricity, it is an electrochemical reaction process; Chemical oxidation (also known as chemical oxidation) does not require electricity, but only needs to be soaked in yao water, it is a pure chemical reaction. 2. The length of time required for anodizing is very long, often dozens of minutes; Chemical oxidation and oxidation only takes a few tens of seconds, 3 wear-resistant: the film generated by anodic oxidation is a few microns to dozens of microns, and it is hard and wear-resistant; The film generated by chemical oxidation is only about microns, and the wear resistance is not very good, but it can conduct electricity and resist atmospheric corrosion, which is its advantage.

Dear, I am glad to answer for you that formation and anodizing are the same process, and they have a certain difference between anodizing and chemical oxidation: 1. Whether electricity is needed: anodizing is carried out under the condition of high voltage electricity, it is an electrochemical reaction process; Chemical oxidation (also known as chemical oxidation) does not require electricity, but only needs to be soaked in yao water, it is a pure chemical reaction.

2. The length of time required for anodizing is very long, and it takes dozens of minutes to go to Zhongling Cave; Chemical oxidation and oxidation only takes a few tens of seconds, 3 wear-resistant: the film generated by anodic oxidation is a few microns to dozens of microns, and it is hard and wear-resistant; The film generated by chemical oxidation is only about a micron, and the wear resistance is not very good, but it can conduct electricity and resist atmospheric corrosion, which is its advantage.

I'm asking about formation and anodes, not chemical anodes.

Kiss, kiss, I read it wrong, it's not the same process 1, chemical method (chemical treatment, surface hardening), 2, electrochemical method (anodizing) surface layer modification - change the surface edge of the original material, 1, chemical treatment, through the action of oxygen or lye, the process of forming oxide or inorganic salt coating film on the metal surface. 2. Anodizing treatment, placing metal parts on the anode of the silver scion in the electrolytic cell, and oxidizing it through electrochemical action to form an oxide film is called anodizing, which can often be seen on mobile phones and notebooks, and is very common.