What You Should Know About Type II Anodizing?

Type II Anodizing, globally acknowledged as regular sulfuric anodizing, is an electrochemical process, which uses electrolytic oxidation to generate an oxide surface of aluminum on an object made of aluminum or its alloys. Apart from building up a layer on the exterior part, the oxide layer also, penetrates into the metal, typically dividing by 30: 70 respectively.

The eventual outcome is an extremely solid preventive surface from all sorts of wear and corrosion. The surface can also be dyed to fit various applications. In the midst of all metal finishing processes, anodizing has been globally accepted due to its environmentally friendly outcome. The byproducts of aluminum anodizing is recycled and used in the manufacturing of cosmetics, baking powder, newsprint, and other items.

Type II Anodizing Expert Process

The process of type II anodizing is uncomplicated and comprises of using a solution containing sulfuric acid and direct current. The oxide layer is produced through passing DC via an electrolytic solution diluted with sulfuric acid. The aluminum object is placed at the positive electrode (Anode) while passing of electrical charge results in discharge of hydrogen at the Cathode (negative electrode) create buildup of aluminum oxide on the target object. Decorative anodic coatings are formed using low voltage and low current density.

Certain factors such as electrolyte concentrate, acidity level, temperature, voltage AMP needs to be controlled seamlessly for formation of a smooth consistent oxide layer. In order to get thicker films, the setting needs low temperature with higher voltage within diluted solutions. For example, decorative anodic layer, which has a large market demand, are typically done through type II anodizing expert services uses low voltage and reduced current density to get the desired result.

Purity of Aluminum Determines the Anodizing Quality

The purity level of aluminum alloys is a major determining factor that ensures the highest quality of the anodizing. They not only produce the best clarity but brings fineness in the coating as well. The porous form of the oxide layer produced by type II anodizing expert services allows ease of color infusions especially with black dyeing.

Benefits of Type II Anodizing Expert Services:

Benefits of type II anodizing are plenty. Firstly, similar to type I and hardcoat, type II enhances corrosion and wear resistance of aluminum parts. It offers superior class of adhesion and gluing ability with dyeing scope over bare metal. It acts as a great electrical insulator and offers fantastic outcome to heighten appearance through use of painted dyes. It has capacity to stand enhanced heat. The process is cost expensive opposed to type I and III.

Significance of Dying:

Type II anodizing offers wide variety of color dyeing onto anodized aluminum substrates. Depending on the desired color depth, dyeing process with dye bath lasts for 10-30 min. with color anodizing; its cosmetic feature is used in large scale in various applications related with domestic, commercial, and industrial field.

Key Difference between Type I and Type III:

The process of anodizing is offered by a type II anodizing expert in three categories and they are Type I, Type II, as well as Type III. Type III anodizing is also called as Hard Coat Anodizing. Among them Type I anodizing involves chromic acid anodizing. However, Type II is regular and absolute sulfuric acid anodizing. Hardcoat or Type III uses sulfuric acid as well as assorted chemistry electrolytes. Typical coating thickness of type I is 0.02 to 0.1 mils thick (0.5 to 2.5 microns), Type II offers up to 25 microns thickness while type III offers 0.5 to 4 mils.

Global Application of Type II Anodizing:

When it comes to type II anodizing, due to its commercial anodic decorative finishes, it is especially recommended for industries involved in the indoor application, decorative items, home and commercial furniture and fixtures, lighting fittings and fixtures both of interior and exterior type. Even though Class II don’t have that much durability level as offered by Type I anodizing, however, because of its fitness to enclose color and bonding with adequate durability, anti corrosive feature, consistent film,  it enjoys a different market globally.

Common Clients:

Domestic Appliance, Lightings and Fittings, Furniture, Medical devices, Recreational Products, Gadgets, Apart from Aerospace (interior uses), Firearms, Automotive and more.

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