Answer & Explanation
There are many diﬀerent types of quenching:
• quenching in a ﬁne vapour or mist is known as fog quenching
• if quenching is carried out directly from some other heat treatment operation (carburizing for example), it is known as direct quenching
• if only some portions of a workpiece are quenched, it is known as selective quenching.