Anodizing of Titanium can be accomplished in many different anodizing solutions from alkaline to acid and almost everything in between. Some of these baths are designed to achieve a specific result and finish. Much of this technology is proprietary and information on it is very difficult or impossible to obtain.
A general type of Titanium anodizing from a sulfuric acid anodizing bath has the following parameters.
I. 155 to 200 g/l sulfuric acid
II. 65-75 degrees Fahrenheit temperature
III. 0-75 volts
IV. 5-15 amps sq ft.
V. 15-20 minutes
VI. Glycol additive (optional)
Pretreatment steps
I. As in all metal finishing a through cleaning must be accomplished, preferably in a strong alkaline cleaner, at 140-160 degrees Fahrenheit for a water break free surface. Electro-cleaning may be desirable but not required. 5-10 minutes.
II. Rinse.
III. Acid etch/activate in 20-50% nitric acid 1-3 minutes. For a more even surface the addition of fluoride is advisable.
IV. Rinse.
V. Anodize at 10 ASF and 10-75 volts depending on final color desired. Color will vary with voltage and time from golden brown at 10 Volts / 20 min to blue at 75 Volts / 12 min.
VI. Rinse.
Types of Anodizing:
Type I Chromic Acid Anodizing
Type II Commercial Anodizing
Type III Hard Coat Anodizing
Titanium Anodizing
Impregnation
 Packaged Chillers Non-expandable (integrated pump tank) 1.5Ton – 20Ton Single / Dual Circuits Single / Dual Pumps |
 SAE Series Modular Chillers Expandable (pump & tank on separate skid) 1.5Ton – 200Ton Single / Dual Circuits |
 SAR Series Split Chillers Expandable (Outdoor Condensing Unit) (pump, tank, evaporator on indoor skid) 1.5Ton – 200Ton Single / Dual Circuits |