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Mechanical Engineering - Production Engineering

Exercise : Production Engineering - Section 3
26.
For machining a mild steel workpiece using carbide tool, the maximum material will be removed at a temperature of
50°C
100°C
175°C
275°C
Answer: Option
Explanation:
No answer description is available. Let's discuss.
27.
Which of the following statement is wrong?
The diamond is the hardest tool material and can run at cutting speeds about 50 times that of high speed steel tool.
The ceramic tools can be used at cutting speeds 40 times that of high speed steel tools.
The cemented carbide tools can be used at cutting speeds 10 times that of high speed steel tools.
The ceramic tools can withstand temperature upto 600°C only.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
28.
Climb milling is chosen while machining because
the chip thickness increase gradually
it enables the cutter to dig in and start the cut
the specific power consumption is reduced
better surface finish can be obtained
Answer: Option
Explanation:
No answer description is available. Let's discuss.
29.
The material which on machining produces chips with built up edge is
brittle material
tough material
hard material
ductile material
Answer: Option
Explanation:
No answer description is available. Let's discuss.
30.
In down milling, the thickness of chip is
minimum at the beginning of the cut and maximum at the end of the cut
maximum at the beginning of the cut and minimum at the end of the cut
uniform throughout the cut
none of these
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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