Under Devolopment

Why you should specify Duranodic anodizing for your project:

There is a lot of misinformation in the anodizing business and for good reason. Like it or not, manufacturers are always looking to cut corners to reduce costs, and it isn't evident at first look when it comes to anodizing. In our industry cutting corners simply means less time in the tank and a thinner coating.  But while a thin coating has identical appearance to a thicker coating when it leaves the finisher’s, in time wear will have a much greater effect on the thin coating than it will on the thicker one.  


Raw Aluminum is well known for being exceptionally soft, but with the right alloy, tempering and anodizing, Aluminum can become exceptionally strong, hard and light. Good tempering and alloys have become much easier and cheaper to acquire in the last half century, but during that same period the anodizing industry has moved towards faster and ultimately lower quality processes. 

What is Duranodic Integral Color?:

Batch anodizings are accomplished in five carefully controlled, calibrated, quality-tested stages:

1.  Cleaning. Acid cleaners remove grease, and surface dirt.

2.  Pre-Treatment

    • Etching. An appealing matte surface finish is created with hot solutions of sodium hydroxide to remove minor surface imperfections. A thin layer of aluminum is removed to create a matte or dull finish 

3.  Anodizing. The anodic film is built and combined with the metal by passing an electrical current through an acid electrolyte bath in which the aluminum is immersed. The coating thickness and surface characteristics are tightly controlled to meet end product specifications.

4.  Integral Coloring.

  • Integral Coloring - Is a one-step process combines anodizing and coloring to simultaneously form and color the oxide cell wall in bronze and black shades and is more abrasive resistant than conventional anodizing and the highest quality  coating you can find.

5.  Sealing. This process closes the pores in the anodic film, giving a surface resistant to staining, abrasion, crazing and color degradation.

Quality control. Throughout the entire anodizing process, AAC members monitor the process and quality of the product. The application of electrical power and color is pre programmed and verified on all batches.

This quality control ensures uniformity to end product specifications for film thickness, density, abrasion resistance, corrosion resistance, color uniformity, fade resistance, reflectivity, image clarity, insulative properties, adhesion and sealing.

In many cases, AAC members use Statistical Process Control (SPC) methods to meet rigorous quality assurance standards.