Metal Finishing Technology provides anodizing that preserves the natural luster, texture and the look of the metal itself. The anodize coating will never peel or wear through. All parts are thoroughly rinsed after each operation to avoid contamination to the next solution. For more variety, beyond black and clear, we offer gold, blue, turquoise, green and red.

Ask about custom color options.



TYPE II

Metal Finishing Technology offers sulfuric acid anodizing. Sulfuric acid anodizing is a form of anodizing yields coatings under 1 mil thick. Anodizing does not deposit any material on to the metal surface.

Unlike other finishes, anodizing preserves the natural luster, texture and the look of the metal itself. The anodize coating will never peel or wear through. All parts are thoroughly rinsed after each operation to avoid contamination to the next solution. The steps listed below are the steps that we take in order for your product to turn out in the best condition.

  • Cleaning – removes the oils and the buffing compounds on the part by soaking the parts in a water-based solution containing mild acids or alkalis along with dispersants and detergents
  • Pretreatment – used to improve the appearance of a surface prior to the anodizing step. The most common pretreatments are etch, which has a satin- matte finish;
  • Anodizing – produces the actual coating. Acting as the positive electrode, a direct current is passed through the item to be anodized while dipped in a bath of water and sulfuric acid, used as the electrolyte.

The water breaks down releasing oxygen at the surface of the item. It then combines with the aluminum to form the coating. This makes the parts clear, able to absorb a layer of aluminum oxide. The thickness is controlled by the level of electrical current and the length of time it is in the tank.

Electrolytic Coloring (The two-step method) – exposes color to the coating after it is formed and takes to the freshly anodized coating. It is now capable to absorb the colorants.
Sealing – the openings on the surface of the finished pieces need to be sealed before the anodized item is placed into service. If left unsealed, the surface of the parts could have poor corrosion resistance, or engage unwanted stains.

The advantages of using sulfuric anodizing are:
• High Corrosion Resistance
• Decorative / Cosmetic Appearance
• Insulator / Nonconductive
• Stain Resistance
• Increased Durability / Scratch Resistance



TYPE III

Hardcoat anodize, for aluminum parts, involves a sulfuric acid bath for up to 2 hours.

We can control the thickness of the coating. This process is more wear resistant, thicker, smoother, and harder than a regular anodize. It protects your aluminum parts from being exposed to moisture and other factors. Colors tend to be darker.

The advantages:

  • Corrosion resistant
  • Non Conductive
  • Harder finish
  • Can be grounded
  • Increased abrasive resistant