FINISHES
Sulfuric Acid Anodizing (Clear Coatings)
+ Large capacity tanks for parts up to 24'6"
+ Coating thickness up to .7 mil (Class 1) or more
+ Coatings meet or exceed Aluminum Association designations: A21, A31, A41

Colour by Organic Die
+ Large capacity tanks for parts up to 24'6"
+ Coating thickness up to .7 mil (Class I) or more
+ Green Anodizing up to 24'6" length
+ Gold Anodizing up to 24'6" length
+ For Custom colours,please contact our office
+ Sulphuric acid anodizing, integrating a full range of dye colours




Anodizing Process
1. A non-etching cleaner removes soil and other organic deposits from the aluminum.

2. Caustic Soda etches the aluminum, removing a thin layer and eliminating imperfections from the surface while reducing shine.

3. The aluminum is placed in a solution of acid and water (the electrolyte) and an electrical current is passed through, causing the water molecules to separate into hydrogen and oxygen. Aluminum has an affinity for oxygen and quickly combines to form a layer of Aluminum oxide. The length of time the aluminum is submerged, the temperature of the solution, the chemical concentration and the electrical current all control the thickness of the coating to produce a Class I or Class II finish.

4. Finally, the finish must be sealed to close the pores produced in the anodizing process. This step is the most important. The seal prevents foreign matter from entering the base metal and causing corrosion or staining.