Surface treatments and finishes (AQA GCSE Design and Technology): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What are the two main purposes of metal surface treatments?
What are the two main purposes of metal surface treatments?
Protection and appearance
What temperature is metal heated to in dip coating?
What temperature is metal heated to in dip coating?
230°C
How does dip coating prevent corrosion?
How does dip coating prevent corrosion?
Blocking air and moisture
Which products commonly use dip coating?
Which products commonly use dip coating?
Tool handles and fridge shelves
What metal is used to galvanise mild steel?
What metal is used to galvanise mild steel?
Zinc
How long can galvanised steel products last?
How long can galvanised steel products last?
50 to 100 years
Why does zinc protect steel in galvanising?
Why does zinc protect steel in galvanising?
It oxidises more quickly than steel
What preparation method is used before powder coating?
What preparation method is used before powder coating?
Sandblasting
What charges are used in powder coating?
What charges are used in powder coating?
Metal negative, powder positive
What makes powder coating more durable than paint?
What makes powder coating more durable than paint?
Heat-curing process
What process do electroplating and anodising use?
What process do electroplating and anodising use?
Electrolysis
What does hot blacking add to metal components?
What does hot blacking add to metal components?
Black iron oxide finish