Anodizing Process Technology
Aluminum is a widely used metal second only to iron and steel in overall industrial consumption.
It is the most popular of the “light” metals because of its superior materials properties such as light weight, high electric and thermal conductivity, and its excellent mechanical properties which facilitate machining and molding of components.
It is used in a wide range of products such as electronic components in cameras and audio equipment, and automotive, aerospace and furniture.
For certain applications, aluminum components require enhancements which are typically accomplished either through over plating with various other metals and alloys (e.g. Zn/Electroless Nickel) or through an anodizing process.
Anodizing is an electrochemical process intended to increase corrosion resistance, allow dyeing, improve lubrication andbuild relatively thick and hard transparent oxide layers on the surface of aluminum articles to enhance their properties.
Anodization can also be “modified” to provide additional enhancements such as color, texture (e.g. Satin), brightness, hardness etc. Okuno-Auromex offers various technologies for either wrought or die cast aluminum components.
TOP-ADD process is designed for cast and die cast aluminum, while The Anodizing Process for Wrought Aluminum is utilized for various other applications.
- Pretreatments for Cleaning – Removes dirt, scales, oils and greases.
- Etching – Provides a smooth, clean surface. This process includes acid and alkaline etching agent.
- Polishing Agent – Provides excellent brightness for bright finishing process.
- Desmutting – Provides additional cleaning for heavily contaminated surfaces
- Anodizing – Provides the oxide layer(s) as the basis for colouring, texturing and sealing.
- Dyeing – Provides a variety of colours and shades.
- Sealing – Provides protection from environmental conditions.
- Post treatment – Provides superior protection from scratching and enhance alkaline resistance.