3. Rolling. For an annealed low carbon steel strip (K and n can be found in Chapter 8 of the Manufacturing book) that is 300 mm wide and 12 mm thick, rolled to a thickness of 8 mm, and assuming a coefficient of friction of 0.2, calculate: a) The maximum possible reduction. b) The contact length for this operation. c) The average flow stress for this operation. d) The roll force. e) The power of the machine if the roll radius is 200 mm and if it rotates at 200 rpm. If a second pass is performed, such that the thickness of the strip is reduced from 7 mm to 5 mm, calculate: f) The contact length for this operation. g) The roll force.
3. Rolling. For an annealed low carbon steel strip (K and n can be found in Chapter 8 of the Manufacturing book) that is 300 mm wide and 12 mm thick, rolled to a thickness of 8 mm, and assuming a coefficient of friction of 0.2, calculate: a) The maximum possible reduction. b) The contact length for this operation. c) The average flow stress for this operation. d) The roll force. e) The power of the machine if the roll radius is 200 mm and if it rotates at 200 rpm. If a second pass is performed, such that the thickness of the strip is reduced from 7 mm to 5 mm, calculate: f) The contact length for this operation. g) The roll force.
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
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Transcribed Image Text:3. Rolling. For an annealed low carbon steel strip (K and n can be found in Chapter 8 of the
Manufacturing book) that is 300 mm wide and 12 mm thick, rolled to a thickness of 8 mm, and
assuming a coefficient of friction of 0.2, calculate:
a) The maximum possible reduction.
b) The contact length for this operation.
c) The average flow stress for this operation.
d) The roll force.
e) The power of the machine if the roll radius is 200 mm and if it rotates at 200 rpm.
If a second pass is performed, such that the thickness of the strip is reduced from 7 mm to 5 mm,
calculate:
f) The contact length for this operation.
g) The roll force.
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