Mechanical Engineering - Production Engineering - Discussion
Discussion Forum : Production Engineering - Section 4 (Q.No. 10)
10.
Low helix angle drills are preferred for drilling holes in
Discussion:
10 comments Page 1 of 1.
Amiya mishra said:
9 years ago
(c) is correct answer /as low helix angel preferred for drilling a hole in hard and brittle material as helix angle decreases rake of cutting edge decreases hence cutting edge becomes stronger.
Faruk ali said:
8 years ago
Yes, correct @Amiya Mishra.
Dileswar Sahoo said:
8 years ago
Low helix angle used for Hard & brittle material, so "C "is Right answer.
NabaJyoti said:
8 years ago
D is correct as per Sadhu Singh. It was of 1992IES.
Vivek Singh said:
8 years ago
C is the correct answer.
Kiran Raut said:
8 years ago
D is the right answer because low helix angle is 10-13 degree that is called the normal material.
Aahok said:
8 years ago
Low helix angle for soft material.
High helix angle for hard material.
High helix angle for hard material.
Gopal Dey said:
7 years ago
Low Helix for Soft.
High Helix for Hard material.
So, Option C is correct.
High Helix for Hard material.
So, Option C is correct.
Kishore M said:
5 years ago
D. carbon steel is correct.
Carbon steel 0.1 to 1.5%.
Cast steel 0.1 to 0.75%.
The helix angle is inversely proportional to strength. CARBON STEEL has the highest strength here.
Carbon steel 0.1 to 1.5%.
Cast steel 0.1 to 0.75%.
The helix angle is inversely proportional to strength. CARBON STEEL has the highest strength here.
Rajendra said:
5 years ago
Small helix for hard material and large helix for ductile material.
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