PC Pop Quiz Jan-Feb 18
Posted on Tuesday, January 30, 2018
Welcome back to PC Pop Quiz—the department
in Powder Coated Tough that is designed to test your
general powder coating knowledge while competing
against industry colleagues! When you joined The
Powder Coating Institute,
you received Powder Coating:
The Complete Finisher’s
Handbook. It’s time to put
it to use and compete
with your colleagues for a
chance to win your own
limited-edition PCI longor
short-sleeved t-shirt!
How it works: The
staff at PCT has used
the handbook to come
up with questions that
will test your powder coating
knowledge. We present the
questions here, in this section,
of every issue of PCT. When
you think you know the
answer, email it to editor@
powdercoating.org using the
subject line “PC Pop Quiz.”
All correct answers received
by the deadline will be
entered in a drawing to win
an official PCI long- or short-sleeved t-shirt. In each
subsequent issue of the magazine, the question, its
correct answer, and the lucky winner’s name will
be published. All answers can be found in Powder
Coating: The Complete Finisher’s Handbook. Ready?
TOPIC: Pretreatment
Q: What is the recommended process
sequence for a five-stage spray line in an
iron phosphate application?
1. Water rinse, alkaline clean, water rinse, next
generation conversion coating, DI/RO water rinse
2. Water rinse, water rinse, alkaline clean, DI/RO
water rinse, next generation conversion coating
3. DI/RO water rinse, water rinse, next generation
conversion coating, water rinse, alkaline clean
4. Alkaline clean, water rinse, next generation
conversion coating, DI/RO water rinse, final rinse
or post-treatment
5. Next generation conversion coating, water rinse,
DI/RO water rinse, alkaline clean, water rinse.
The question for the November/December edition
of PC Pop Quiz, along with the answer is:
Q: For the successful coating of Faraday cage areas, which
of the following conditions does NOT need to be met?
1. Powder must be well charged
2. Free ions must be controlled
3. Airflow velocity has to be sufficient to deliver the
powder inside a recess but not excessive to preclude
powder disposition.
4. The compressed air must be dried to the equivalent
of -40°F pressure dew point.
5. External electric field must be controlled to reduce
the “push” for powder particles to deposit on the
edges of a Faraday cage.
A: The compressed air must be dried to the equivalent
of -40°F pressure dew point does not belong
(and can be found in page 110 in the handbook).
Congratulations to our many readers who
submitted the correct answer. All those names were
entered in a randomizer app, and the lucky winner is:
Nathan Bishop, Powder Coat Supervisor/ Powder Coat
Supervisor/ Internal Auditor at Forest Dental, Portland,
Ore. The t-shirt you selected is on its way.
Congratulations!