TYPE II ANODIZING LINE
YSG-A-002
A WIDELY USED ANODIZING WAY FOR ALUMINUM,OFFERING CORROSION RESISTANCE AND DYE ABSORPTION.
Type II Anodizing, also known as decorative or conventional sulfuric acid anodizing, is the most commonly used anodizing process for aluminum and its alloys. It uses a sulfuric acid electrolyte to create a durable,porous oxide layer that can be dyed,sealed,or left natural.Type II anodizing is widely used in architectural, consumer, automotive, aerospaceand electronics industries.
Product Details:
Key Benefits of Type II Anodizing:
• Enhanced corrosion protection in indoor and outdoor environments
• Available in a wide range of colors through dye absorption
• Improved wear resistance and surface durability
• Excellent adhesion base for paints, adhesives, and sealants
• Cost-effective and scalable for mass production
SULFURIC ACID ANODIZING PROCESS
Type II anodizing uses a sulfuric acid solution (typically 15–20% concentration) as the electrolyte and applies a direct current to the aluminum part, which acts as the anode. The process forms an oxide layer between 0.00007" to 0.001" thick, with part of the layer penetrating the aluminum and the rest building outward.
1. Cleaning and Surface Preparation
Parts are cleaned and etched to remove contaminants and create a uniform surface finish. Optional bright dipping or satin etching can be used to modify the final appearance.
2. Anodizing
A controlled voltage and temperature are applied to grow the oxide layer.Tank temperature is typically maintained between 20–25℃
3. Dyeing (Optional)
This allows for a wide variety of colors such as black,bronze,blue,red,gold,etc
4. Sealing
To lock in color and improve corrosion resistance,the anodized part is sealed in hot deionized water, nickel acetate, or proprietary sealing solutions.
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