Acid-Driven Cleaning and Pretreatment - Passivation and Pretreatment of Aluminum, Galvanized and Stainless Steels
This two-part presentation begins with a thorough
explanation of the concepts of passivation and pretreatment. Passivation of galvanized steel should not be
confused for a pretreatment, because passivating actually inhibits paint
adhesion, whereas pretreatments enhance paint adhesion. With a fullness of
understanding of these concepts, the second part of the presentation focuses on
the advantages of using acids for cleaning and preparing metals for
painting. To comply with modern regulatory desires, the acid-driven
reactions must be phosphate-free, heavy metal-free, and non-toxic. Combining an
appropriately designed acidic cleaner and a passivator has been demonstrated to
permit a significant increase in the amount of acid in the process, allowing up
to 1000x higher concentrations of acids that would otherwise not be tolerated
without in-process corrosion. The approach allows for a combined passivation and
pretreatment of otherwise stubborn-to-treat metals.
Chalk, Principal Research
Chemist, DuBois Chemicals
12741 N. Port Washington Rd.
February 10, 2015
Dinner at 5:30, Presentation to
$20 members / $30 Non member
Reservations are required to attend with limited space. To reserve your spot, send the company name, and names of those attending to: WISCCAI@Yahoo.com. If you find out later you cannot attend, please cancel your reservation. W now bill those that make reservations and no who. We have the ability to take credit card payments on-site!