Corrosion Protection

Technician A says that the basecoat may be applied directly over a self-etching primer.

Technician B says that the acid in self-etching primer neutralizes as it dries.

Who is right?

• A only

• B only

• Both A & B

• Neither A nor B

All of these areas may have thick chip-resistant coating EXEPT the:

• dogleg area

• rocker panel

• bottom of the doors

• bottom of the deck lid

Which of these primers may contain zinc?

• Epoxy

• Self-etching

• Weld-through

• Wash

Anti-corrosion compound is typically applied:

• with a wand

• in the spraybooth

• before part assembly

• in the wheelhouse

Which of these should be done to determine if a replacement part has E-coat?

• Sand and check for a dusty residue

• Wipe with solvent and check for pain transfer

• Wipe with denatured alcohol and check for paint transfer

• Heat with a heat gun and check for softening of the finish

All of these are true about anti-corrosion compounds EXCEPT that they:

• are applied inside aluminum cavities

• should be cleared from drain holes

• are usually topcoated

• have self-healing capabilities

Which of these is the most effective corrosion-inhibiting coating?

• E-coat

• Zinc phosphate

• Self-etching primer

• Wash primer

• All

Which of these is a characteristic of weld-through primer?

• Heat resistant

• Etches into the metal

• Must be wet for best performance

• May be a two-part product

Which of these usually requires the zinc coating to be removed on the entire flange?

• Spot welds

• GMA (MIG) plug welds

• MIG brazing

• Panel bonding

Technician A says that acid rain is a corrosion promoter.

Technician B says that heat during GMA (MIG) welding is a corrosion promoter.

Who is right?

• A only

• B only

• Both A & B

• Neither A nor B