Manufacturing And Production Technology
Tool life is generally better when

Grain size of the metal is small
None of the listed here
Grain size of the metal is large
Hard constituents are present in the micro-structure of the tool material

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Manufacturing And Production Technology
Which of the following statement is incorrect with reference of lathe cutting tools?

The base is that surface of the shank which bears against the support and takes tangent pressure of the cut
The nose is the corner, arc or chamfer joining the side cutting and the end cutting edges
The flank of the tool is the surface or surfaces below and adjacent to the cutting edges
The heel is that part of the tool which is shaped to produce the cutting edges and face

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