Modification of properties (AQA GCSE Design and Technology): Quizzes
📚Quizzes
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10 questions from this quiz
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Practise the questions
10 questions from this quiz
What is the critical temperature for hardening carbon steel?
What is the critical temperature for hardening carbon steel?
900°C
What is the name of the rapid cooling process used in hardening?
What is the name of the rapid cooling process used in hardening?
Quenching
What is the main purpose of tempering hardened steel?
What is the main purpose of tempering hardened steel?
Reduce brittleness
At what temperature might steel be heated during a tempering process?
At what temperature might steel be heated during a tempering process?
295°C
What advantage does case hardening provide?
What advantage does case hardening provide?
Hard surface with tough core
What color does steel appear at 950°C during case hardening?
What color does steel appear at 950°C during case hardening?
Cherry red
What role does aluminium play in the anodising process?
What role does aluminium play in the anodising process?
Anode (positive electrode)
What does anodising aluminium create on the surface?
What does anodising aluminium create on the surface?
Thick oxide layer
What type of light is used to expose photo-resist PCBs?
What type of light is used to expose photo-resist PCBs?
UV light
Which chemical etches away unwanted copper from PCBs?
Which chemical etches away unwanted copper from PCBs?
Ferric chloride solution