Chemical Processes for Aluminum/Titanium Alloys

Our Chemical and Electrochemical processes are Nadcap Accredited moreover they are recognized and qualified by the major Aerospace Industries.

Processi Speciali has two indipendent plants for the chemical and electrochemical treatments of aluminum and titanium alloys, both fully automated with software for setting and monitoring the working parameters such as temperature, pressure, voltage, current, etc.

Tanks dimensions are: 1200 mm x 800 mm x 1400 mm h for the smaller plant and 6300 mm x 900 mm x 1700 mm h for the bigger one.

All the solutions in the vats are continuously monitored, analyzed and optimized by the laboratory through the identification and analysis of polluting agents, the solutions concentration, PH, contained of TDS, speed of attack for pickling and de-greasing vat, etc. All this data is collected and used for the statistical control of the processes.

Other than the maintenance and control of the plant, instruments, vat solutions, working paramenters and everything pertaining to chemical and electrochemical processes, Processi Speciali strictly follows customer specification carring out a considerable number of distructive tests such as corrosion tests (salt spray fog test), tests of adhesion after the chromate conversion treatment and anodic oxidation of aluminum alloys, calculation of the weight of the anodic covering and all the other tests required by our customers.

All the personnel that work on the plants are experienced and continuously trained

Chemical processes for aluminum alloys:

  • Alkaline cleaning
  • Acid Pickling
  • Chromic Acid Anodizing
  • Chromic Acid Anodizing for Bonding
  • Sulphuric Acid Anodizing
  • Sulphuric Acid – Boric Acid Anodize
  • Hard Anodizing (sulphuric acid anodizing with oxide average thickness of 50 micron)
  • Phosphoric Acid Anodizing
  • Chemical coating
  • Tartaric-Sulphuric acid anodizing (TSA)

Chemical processes for Titanium alloys:

  • Cleaning, descaling and surface preparation of titanium and titanium alloy
  • Application of Sol-Gel Conversion Coatings
  • Phosphate-Fluoride Coating