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2. AIM OF THE CASE STUDY
• AIM:
The aim of this case study is to carry out
investigation into different factors which influence
temperature distribution in ceramic tools.
CERAMIC MATERIALS INVESTIGATED:
1.AL2O3-TIC
2.case hardened AISI steel
3.nickel based super alloys (eg.inconel 718)
SOFTWARE USED:
Finite Element Pro(algor) is the software used
here for calculating temperature distribution.

3. STEPS INVOLVED
&
EXPERIMENTS TO BE DONE
STEPS INVOLVED:
1.Temperature measurements of the tool rake face were
performed using a thermocouple based technique and
2.The obtained results are compared with finite element
analysis
EXPERIMENTS TO BE DONE:
Experiments were performed to study the effects of
1.Cutting parameters
2.Different tool geometries
3.Tool conditions and
4.Work piece materials on cutting edge
temperatures.

4. RESULTS
1.It was found that there is an optimum value of
rake angle where the cutting edge
temperature was minimum.
2. Initialy the edge temperature reduced with a
more negative rake angle from -6 degree to-20
degree to more negative values, temperatures
would be increased again.

5. COMPARISON OF CUTTING DIRECTION STRESS(Mpa)
WITH BAGCHI AND WRIGHT’S EXPERIMENT

6. ANALYTICAL RESULTS IN WORK PIECE

7. EL- WARDANY’S EXPLANATION
• At -6 degree rake angle the air gap between the
tool’s clearance face and the cut surface is
relatively small.
• Moving from -6 degree to -20 degree rake angle
the tool gets rotated or lifted up away from the
surface
• Then there is a great chance of cooling by
convection
• Eventualy the shearing of the material in the
secondary shear zone gets to be intense with
more aggressively negative rake angles.
• Then the overall heat generated is larger and
temperatures rise again.