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Which of the following indicate better machinability?
1. Smaller shear angle
2. Higher cutting forces
3. Longer tool life
4. Better surface finish
  • a)
    1 and 3
  • b)
    2 and 4
  • c)
    1 and 2
  • d)
    3 and 4
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Which of the following indicate better machinability?1. Smaller shear ...
Factors which come into play while evaluating the machinability of any metal are:
1. Tool life
2. Form and size of chip and shear angle
3. Cutting forces and power consumption
4. Surface finish
5. Cutting temperature
6. Rate of metal removal per tool grind
7. Rate of cutting under the standard force
8. Uniformity in dimensional accuracy of successive parts
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Most Upvoted Answer
Which of the following indicate better machinability?1. Smaller shear ...
Better machinability can be indicated by the following factors:

Higher Cutting Forces:
When higher cutting forces are required, it indicates that the material being machined is being removed at a faster rate, which translates to better machinability.

Better Surface Finish:
A smooth surface finish indicates that the machining process was able to produce a surface with minimal imperfections, which is an indication of better machinability.

Longer Tool Life:
A longer tool life means that the tool used for machining was able to withstand the forces and wear caused by the machining process, which indicates better machinability.

Smaller Shear Angle:
A smaller shear angle indicates that the material is being cut with less force, which means that the machining process is more efficient and less prone to tool wear, indicating better machinability.
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