Anodizing is an electrolytic passivation process used to increase the thickness of the natural oxide layer on the surface of metal parts. The process is called anodizing because the part to be treated forms the anode electrode of an electrolytic cell. Anodizing increases resistance to corrosion and wear and provides better adhesion for paint primers and glues than bare metal does. Anodic films can also be used for several cosmetic effects, either with thick, porous coatings that can absorb dyes or with thin transparent coatings that add reflected light wave interference effects. Anodizing is also used to prevent galling of threaded components and to make dielectric films for electrolytic capacitors. Anodic films are most commonly applied to protect aluminum alloys.
CHROMIC ANODIZING (ANODIZE ACID TYPE I)
The oldest anodizing process uses chromic acid. It is widely known as the Bengough-Stuart process but, due to the safety regulations regarding air quality control, is not preferred by vendors when the additive material associated with type II doesn't break tolerances. In North America, it is known as Type I because it is so designated by the MIL-A-8625 standard, but it is also covered by AMS 2470 and MIL-A-8625 Type IB. In the UK it is normally specified as Def Stan 03/24 and used in areas that are prone to come into contact with propellants etc. There are also Boeing and Airbus standards. Chromic acid produces thinner, 0.5 μm to 18 μm (0.00002" to 0.0007") more opaque films that are softer, ductile, and to a degree self-healing. They are harder to dye and may be applied as a pretreatment before painting. The method of film formation is different from using sulfuric acid in that the voltage is ramped up through the process cycle.
STANDARD ANODIZING (SULFURIC ACID TYPE II)
The most common and cost-effective anodizing process. Provides excellent abrasion and corrosion resistance. Except for die castings, these coatings are easily dyed a wide range of colors.
HARD ANODIZING (TYPE III)
Hardness equal to hard chrome plating is easily attainable. These coatings accept black dyes well, while lighter colors are available on thinner coatings. Type III provides excellent wear resistance and heat dissipation. This coating has an outstanding ability to absorb a variety of lubricants and is, therefore, recommended where friction is a factor.
Military Tan, Fast Blue G, Copper BF, Teal, Brown BL, Yellow D, Golden Orange RLW, Violet MRB, Green AEN, Gold S, Fiery Red, Violet 3D, Custom Wine, Black HBL, Bordeaux RED, Grey BL, Neon Pink, Gray R, Turquoise PLW, Blue A, Black MLW, Olive Drab.
Optical Black, Optical Bronze.
Customize your parts with a more modern and striking finishing. We have the anodize splash finishing that does the same job of an anodizing protecting the aluminum of corrosive but customizing your part in the way you like. Breathe some life into your parts.
This process provides the medical industry with a variety of anodized finishes that will not only enhance your product’s quality, appearance and durability, but has been tested and approved for total compatibility with the Sterrad® Sterilization System. On a clear or gold anodized background, color graphics options include black, red, gold, green and blue marking capability. Other titanium parts are color anodized for ease of product size identification, or for cosmetic appeal. Laser marking may be done on curved or flat surfaces.
It allows for maximized production, improved efficiencies and simplified environmental compliance. Used as functional (protective) and decorative finishes, powder coatings are available in an almost unlimited range of colors and textures. The coating gives the piece a durable high-quality finish. It has a variety of powder coating finishes to choose from: metallic, textures, high gloss, matte, plus!
Protect your materials from corrosion with Passivation. This process is designed to remove foreign metals from the surface of corrosion-resistant and stainless steels by immersing a part of clean and dried steel in a solution of nitric acid and oxidizing salts. However, it does not change the appearance of the base metal.
Graining is the practice of imitating wood grain on a non-wood surface in order to increase that surface's aesthetic appeal. Graining can be accomplished using either rudimentary tools or highly specialized tools. A specialized thick brush used for graining is often called a mottler. It can also be applied on bricks and brass, as is more common today.
The bead blasting process is similar to pressure washing, but uses an abrasive material instead of water. Different types of material can be used to achieve a desired finish. Surface texture does not change after anodizing therefore bead blasting is a technique used to dull/matte the finish.
Enhance the appearance of an item, prevent contamination of instruments, remove oxidation, create a reflective surface, or prevent corrosion in pipes. Use polish to remove oxidization (tarnish) from metal objects.
This process ideal for plating components that are complex in shape and require tight tolerances after plating. Electroless Nickel provides excellent corrosion resistance, hardness and wear resistance. It can be applied to all common base materials and provides superior protection for light metals (Example: aluminum alloys)
Chem film applies a chromate conversion coating on aluminum.
The coating produces a finish which:
We offer Mil-Spec and RoHS compliant chemical films.