5 important things need to know about anodized

In the customized fabrication industry, a lot of engineers and designers willingly chose anodized as a surface treatment. The durability produced by anodized is exceptional. It creates an extremely hard surface that will be far more resistant to scratches and wear compared to untreated aluminum. The multitude of color options also is an attractive choice for the customer.
Before you customize your own anodized parts, the below 5 important things you need to know.

1. Very suitable for aluminum

Technically, anodizing also can be applied to magnesium and titanium. But in China, the technology is still in its infancy, also in our factory the aluminum anodized is the most common process.

2. Die-cast aluminum do not recommend anodized

Cast aluminum alloys and die castings generally contain high silicon content. Even if the ht412 die-cast aluminum special dedusting agent is used, the anodic oxide film may be dark, and it is difficult to obtain a colorless and transparent oxide film. Increase, the color of the anodized film ranges from light gray to dark gray to dark gray. And the NG rate will be very high and hard to control.

3. Different types of anodized

Type I: Type I anodizing uses chromatic acid. Longwang does not currently offer Type I anodizing.
Type II: Type II anodizing uses sulfuric acid. Type II anodizing is also known as common or standard anodizing.
Type III: Type III anodizing also uses sulfuric acid.
The main difference between the two types is that, for Type III anodizing, the sulfuric acid temperature is lowered and the current runs at a higher voltage. Type III gives a denser, wear-resistant oxide layer that creates a harder and smoother finish than Type II. It is ideal when greater durability is required for your design, such as when parts rub together.

4. Color options for anodized

At Longwang, For Type II, we offer a large selection color (the detail color can reference Pantone color card), as well as Type III we only supply the black and gray.

5. Hanging point

During the anodizing process, will need a rack to place the aluminum parts in a liquid bath with an electric current flowing through it. After that will be some scratches especially the large and heavy parts. Mark the hang point in your drawing will save your communication time.

Anodized is an ideal way to add durability and corrosion resistance to your aluminum parts and enclosures. Also, the many color options give you vibrant aesthetics that really make your parts unique.