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WorksheetsUnit R014 - Engineering Manufacture - Topic Area 1 - Retrieval G
Total questions: 9
Worksheet time: 9mins
Finishing Processes -
Many engineered products are painted, why?
To protect the bare material from the environment.
To improve aesthetic appearance.
To aid with safety and visibility.
To make the product no longer conduct electricity.
Finishing Processes -
A significant amount of engineered products are made from (a) . This contains high (b) content. This will lead to the material (c) , especially if exposed to the (d) . (e) provides a layer of protection between the base steel and the atmosphere preventing the corrosion process.
Finishing Processes -
In mass production the paint process is usually via a spray and automated. What principle is used to help?
Principal of common sense.
Electrostatic principles.
Principal of evolution.
Ohms principal.
Finishing Processes -
Where possible automated spray robots will be used however the use of a brush is still often used. Why?
Spray equipment can be expensive for smaller industries and businesses.
Automated spray robots are uneconomical if the product is regularly changing.
Spray robots are large and may struggle to get into all places.
Some products require painting once installed on site.
Brushes give a smoother finish
Finishing Processes -
Put these basic spray painting steps into order.
Prep the surface. Tape sections that are not to be painted and degrease/clean/roughen the surface.
Spray the product with an appropriate primer.
Spray the product with adequate amount of layers of paint.
Apply a top coat or lacquer to give a shine if required.
Removing masking and allow to dry.
Finishing Processes -
Select the PPE you would expect a paint sprayer to wear.
Finishing Processes -
Powder coat is becoming increasingly preferred to paint, why?
The ability to use a variety of plastics and to take advantage of the specific features of these plastics.
Increased thickness of coating.
Powder coating can improve the functionality such as: sound deadening, electrical resistance and changes to friction levels.
Multiple surface finishes available including grit, textured and veined.
Cheaper than spray painting.
Finishing Processes -
Put the basic powder coating steps into order.
Prep the surface.
Apply the powder
Cure the surface treatment.
Finishing Processes -
Which of the images below would you expect to be powder coated?
Vending Machines
Transport Hand Holds
Car Bodies
Outdoor Gym Equipment
