Hardening (Leaving Cert Engineering): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
What is the primary purpose of the hardening process in steel treatment?
What is the primary purpose of the hardening process in steel treatment?
To increase hardness and strength
What must steel contain for the hardening process to work effectively?
What must steel contain for the hardening process to work effectively?
Sufficient carbon content
What is the most common hardening technique?
What is the most common hardening technique?
The quench method
What is austenite?
What is austenite?
A crystal structure that dissolves carbon
Which of these is NOT mentioned as a quench media?
Which of these is NOT mentioned as a quench media?
Air
Why is rapid cooling crucial in the hardening process?
Why is rapid cooling crucial in the hardening process?
Slow cooling prevents proper hardening
What structure forms when carbon atoms become trapped during rapid cooling?
What structure forms when carbon atoms become trapped during rapid cooling?
Martensite
What type of crystal structure does martensite have?
What type of crystal structure does martensite have?
Hard, needle-like structure
What problem does martensite create in hardened steel?
What problem does martensite create in hardened steel?
It makes steel very brittle
When is case hardening used?
When is case hardening used?
For low-carbon steel needing hard surface
What benefit does case hardening provide?
What benefit does case hardening provide?
Hard surface and tough inner core
In the pack method of case hardening, what surrounds the component?
In the pack method of case hardening, what surrounds the component?
Graphite powder