Understanding Anodize Rack Marks

In order to anodize aluminum, the part being anodized must be held (racked) by either a titanium or aluminum rack and then immersed in a sulfuric acid bath. While being immersed, an electrical charge is applied to the part creating the anodic coating on the surface of the part. Rack marks are the small contact points […]

Aluminum Anodizing Process and Design Guide

What is Aluminum Anodizing? Aluminum anodizing is an electrochemical process in which an oxide (anodic) layer is chemically built on the surface of the metal. This oxide layer acts as an insulator and can be dyed in a wide variety of colors. Anodizing provides surface corrosion protection along with an excellent substrate for decorative finishes. […]

Hardcoat Anodize Facts and Guidance

In an effort to promote better understanding of the Process of Aluminum Hard coating, we offer to our customers the following facts and suggestions: Hardcoat IS different; Hardcoat is NOT plating. Hardcoat PENETRATES the base metal as much as it builds up on the surface and the term THICKNESS includes both the buildup and the […]

Anodizing Overview

What is anodizing? By definition, anodizing is “a process to coat a metallic surface electrolytically with a protective or decorative oxide.” A coating of aluminum oxide is grown from the aluminum by passing an electrical current through an acid electrolyte bath in which the aluminum is immersed. The coating thickness and surface characteristics are tightly […]