28) While hardening, after heating the steel to the required temperature, it is held at that temperature as soaking time for normally
Answer is:
5 minutes for 10 mm thickness
Related Heat Treatment MCQ with Answers
Answer is:
To increase toughness
Answer is:
In still air to room temperature
Explanation:
Normalizing Process involves heating a material to an elevated temperature and then allowing it to cool back to room temperature by exposing it to room temperature air after it is heated. This heating and slow cooling alters the microstructure of the metal which in turn reduces its hardness and increases its ductility
