Excellence in Electroplating & Anodizing Since 1938   |  

Anodizing

Anodizing is an electrochemical process that thickens and toughens the naturally occurring protective oxide on Aluminum. MPP’s custom anodizing involves racking parts and immersing them in a series of treatment tanks. Extrusions, sheets or bent metal parts, castings, and machined aluminum parts are just a few of the items that are readily anodized. MPP has been a high quality anodizer for over 75 years.

MPP Location providing this process: ArizonaMissouri and Texas

Sulfuric Acid

The predominant anodizing process today. Coatings 0.1-1.0 mil thick formed in a 15 pct. solution, 12 asf, 18-24 volts, 70F for 10-60 min. This coating is usually organically dyed or colored with deposited metals (two-step). Offers a wide array of applications. Most anodizers use this method, although other acids are available for specialty purposes.

Appearance options and quality are improved through the use of dyes and special pretreatment procedures. This makes the aluminum look like pewter, stainless steel, copper, brushed bronze or polished brass and can also be colored with brilliant blues, greens, reds, and many varieties of metallic gold and silver.

The unique dielectric properties of an anodized finish offer many opportunities for electrical applications. The surface of the aluminum itself is toughened and hardened to a degree unmatched by any other process or material. The coating is 30 percent thicker than the metal it replaces, since the volume of oxide produced is greater than that of the metal replaced. The resulting anodic coating is porous, allowing relatively easy coloring and sealing.