Patent ID: 6419992
Filing Date: 2002-07-16
Classification: B05D,C23C,G07F,Y10T

Abstract:
A method of protecting articles having a clean and exposed bare ferrous base surface comprising applying a zinc coating to the clean and exposed bare surface of the ferrous base by hot dipping the article, then centrifuging the article while the dip is still hot to remove excess amounts of the zinc coating to cause the zinc coating to have a somewhat smooth and somewhat rough surface suitable for coating by a non-epoxy thermosetting electrically insulating organic powder, then powder coating thief non-epoxy thermosetting electrically insulating organic powder on the somewhat smooth and somewhat rough zinc coating surface by applying opposite polarity DC charges to the powder and the surface and heating the powder while the powder is applied to the zinc coating surface so the powder adheres to and covers the somewhat smooth zinc coating surface.