1. Metal Finishes Learning Intention: Understand how and why metals are finished

2. Finishes on metals are used to both protect and decorate the surface. If left unprotected most metals tarnish and eventually corrode.

3. Preparation No matter what finish is to be applied, it is important that the surfaces are clean of dirt and grease.

4. Dip coating involves covering metal with plastic

5. 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

6. 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

7. Electroplating Gold plated Silver plated Chrome (chromium) plated Tin plated Zinc plated

8. Electroplating

9. 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

10. Anodising Aluminium is typically anodised. It is done to make it more durable and decorative Polished Etched Brightened Coloured Sealed

11. 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

12. Spray Paint

13. Test Yourself

14. What preparation is needed before applying any finish?

15. What finishing process has been applied to this aluminium bucket and why? What has it been coated with?

16. What are the 3 main reasons metal is finished?

17. What finish has been applied – and how?

18. What are the two main ways to apply a powder coating? Electrostatic Fluid bed

19. What type of finish has been applied and why?

20. Briefly describe what enamelling is