I would like to ask, what are the probable causes of paint chip-off after phosphating has already been done to the metal?
automobile restoration - Manila, NCR, Philippines
Poor cleaning, poor phosphating, poor rinsing, poor paint application and poor paint curing are possible causes for your problem.George Gorecki
- Naperville, Illinois
The most common cause I have seen over the years is poor rinsing prior to phosphating. The phosphate forms crystals on the surface due to a pH change. This is normally the result of the acid reacting with the metal. A layer of soap gives the required pH change to form the crystals without any real adhesion to the metal.Ronald Zeeman
Coil Coating - Brampton, ON, Canada