Cutting temperature

Typical Merchant Circle Diagram (MCD) for zero rake angle
Machining

Machining, Numerical

Question: In orthogonal turning of an engineering alloy, it has been observed that the friction force acting at the chip-tool interface is 402.5 N and the friction force is also perpendicular to the cutting velocity vector. The feed velocity is negligibly small with respect to the cutting velocity. The ratio of friction force to normal force associated with the chip‐tool interface is 1. The uncut chip thickness is 0.2 mm

Reduce friction at the tool‐chip interface
Machining

Machining

Chips generated during machining flow over the rake surface of the cutting tool before it leaves the machining zone. Intense rubbing under high contact pressure between flowing chip and rake surface leads to excessive heat generation. The contact region also gives rise to secondary deformation zone that contributes over 70% of the total cutting heat. Although majority of the cutting heat generated in secondary deformation zone flows away with the