Aircraft Finishes Flashcards
How do wash primers improve paint bonding?
By containing phosphoric acid.
What is the mixing ratio of Epoxy primer?
1:1
What are the disadvantages of Zinc Chromate?
Longer curing times and poor adhesion.
How is Zinc Chromate thinned?
By using Toulene.
What is the function of a binder?
It holds the pigment in liquid form.
What has the greatest effect on pressure drop while using compressed air?
The inside diameter of the hose.
In an airless spraying system, how is the paint atomized?
Hydraulic pressure.
(T/F) Airless spraying is used on aircrafts.
False.
How is paint atomized in an air spraying system?
Compressed air.
When would a pressure pot be used?
For applications requiring a large amount of paint.
What are the knobs used for on the spray gun control?
Top knob is used for air control. Bottom knob is used for paint control.
What does HVLP stand for?
High velocity, low pressure.
How do you fix a split spray or “hourglass” spray pattern?
By decreasing the air pressure.
What pattern do you get with both wing ports clogged?
Circular pattern.
How far should the gun be held from the work?
6-10 inches.
What areas should be painted first?
The difficult areas.
What is the most common cause of runs and sags when applying paint?
Holding the spray gun too close to the work.
What causes crazing?
Cold temperatures.
What causes peeling?
Improper surface preparation.
How is wax-type paint stripper removed from the aircraft?
MEK or acetone.
How is a wrinkle finish applied?
By applying a heavy coat.
What are the two types of acid proof paint?
Bitumastic and polyurethane.
Where are acid proof paints most commonly used?
In battery boxes.
What FAR states the display of aircraft markings?
FAR 45.23
