Finishing Materials Metals Standard Finishes Spray Paint Solvent based paints excellent aesthetic qualities and corrosion resistance Powder coating Coating metal in a plastic skin ID: 594476
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Finishing MaterialsSlide2
Finishing Materials
Metals
Standard Finishes
Spray Paint – Solvent based paints;excellent aesthetic qualities, and corrosion resistance Powder coating – Coating metal in a plastic “skin” The powder coating is typically applied electrostatically and is then cured under heat to allow it to flow and form a "skin". The powder may be a thermoplastic or a thermoset polymer. It is usually used to create a hard finish that is tougher than conventional paint. Powder coating is mainly use for the coating of metal Slide3
Finishing Materials
Metals
Plastic dip coating
Dip coating is a plastic manufacturing process where a heated metal mould is immersed in a tank of molten polymer resin such as plastisol. The plastic is coated/formed around the mould. The hotter the mould and the longer the dip, the thicker the coating. The mould
is then extracted from the bath and goes through a curing or cooling process.ElectroplatingThe electroplating process provides a protective coating to different types of metal. The most common use in firearms manufacturing is chrome or nickel plating, which provide a bright finish to the metal. Electroplating can be used on various types of metals; the result is a thin metal coating on the exterior of the original metal part.
Silver electroplating
.
The anode is a
silver bar and the cathode is an iron spoon.Slide4
Finishing Materials
Metals
Heavy
Duty/Extreme Conditions Galvanising – Involves dipping metal (usually mild steel) into a bath of molten zinc. Provides
high corrosion resistance, although finish is not the most attractive Galvanised
Boat Trailer
Galvanising ProcessSlide5
Finishing Materials
Woods
Interior –
Varnish – comes in oil, water and solvent based form - Wood stains - enhances timber colourExterior – Varnish - solvent based, excellent weather protection Slide6
Finishing Materials
Plastics
Plastics do not usually require a finish, but there are exceptions.
Q. What is this and what does it do? A. Buffing machine; used for polishing plastic and metal