The highest cutting temperature is located close to the shear zone. a) True b) False

a) True

Explanation:

In cutting action, three type of zone are presents

1. Primary zone:

The most of part of energy is converted in to heat.

2. Secondary zone:

Heat generation due to rubbing between tool and chip. This also called deformation zone.

3. Tertiary zone:

Heat generated due to flank of tool and already machined surface.

So the highest temperature is located close to the shear zone.