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Published byMolly Dixon Modified over 7 years ago
Metal Finishes Learning Intention: Understand how and why metals are finished
Finishes on metals are used to both protect and decorate the surface. If left unprotected most metals tarnish and eventually corrode.
Preparation No matter what finish is to be applied, it is important that the surfaces are clean of dirt and grease.
Dip coating involves covering metal with plastic
Electrostatic Powder Coating Uses a spray gun, which applies an electrostatic charge to the powder particles, which are then attracted to the grounded part. The parts then enter a curing oven
Fluid Bed Powder Coating Preheated parts are dipped in a hopper of fluidizing powder. The coating melts, and flows on the part. Post cure may be needed
Electroplating Gold plated Silver plated Chrome (chromium) plated Tin plated Zinc plated
Galvanising Galvanised steel or aluminium is metal that has been coated with zinc in order to prevent rusting / corrosion. This can be done using a hot dip galvanising method or electroplating
Anodising Aluminium is typically anodised. It is done to make it more durable and decorative Polished Etched Brightened Coloured Sealed
Enamelling glass is ground to a fine powder, then laid onto a metal surface and fired in a kiln at a great heat to make it melt and fuse
What preparation is needed before applying any finish?
What finishing process has been applied to this aluminium bucket and why? What has it been coated with?
What are the 3 main reasons metal is finished?
What finish has been applied – and how?
What are the two main ways to apply a powder coating? Electrostatic Fluid bed
What type of finish has been applied and why?
Briefly describe what enamelling is
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