A flat-rolling operation of 250 mm wide alloy stee Calculate roll torque
A flat-rolling operation of 250 mm wide alloy stee Calculate roll torque
Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
ChapterMA: Math Assessment
Section: Chapter Questions
Problem 1.1MA
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Question
A flat-rolling operation of 250 mm wide alloy stee
Calculate roll torque
![ll MTNSA-Take Care... LTE 00:08
10%
Done
7 of 109
DATA:
Vo = 69 m/min
V, = 42 rev/min
Wr = 260 mm
Rollers (smooth)
D= 600 mm
Ve
30 mm
Metal
Vr
25 mm
Vr
Figure 1
Water Cooling
Table 1: Typical values of strength coefficient K and strain hardening exponent n for selected metals.
Strength
coefficient, K
Material
Strain
hardening
exponent, n
(MPa)
Aluminum, pure, annealed
175
0.20
Aluminum alloy, annealedª
240
0.15
Aluminum alloy, hardened by heat treatment
400
0.10
Copper, pure, annealed
300
0.50
Copper: brass
700
0.35
Steel, low C, annealedª
530
0.26
Steel, high C, annealed®
850
0.15
Steel, alloy, annealed®
700
0.15
Steel, stainless, austenitic, annealed
1200
0.40](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F051abf40-d48f-4d3b-9d07-d3f1e20b9d4f%2F843a7d4f-7693-4c33-b50f-3d987f276071%2F1ucuckb_processed.jpeg&w=3840&q=75)
Transcribed Image Text:ll MTNSA-Take Care... LTE 00:08
10%
Done
7 of 109
DATA:
Vo = 69 m/min
V, = 42 rev/min
Wr = 260 mm
Rollers (smooth)
D= 600 mm
Ve
30 mm
Metal
Vr
25 mm
Vr
Figure 1
Water Cooling
Table 1: Typical values of strength coefficient K and strain hardening exponent n for selected metals.
Strength
coefficient, K
Material
Strain
hardening
exponent, n
(MPa)
Aluminum, pure, annealed
175
0.20
Aluminum alloy, annealedª
240
0.15
Aluminum alloy, hardened by heat treatment
400
0.10
Copper, pure, annealed
300
0.50
Copper: brass
700
0.35
Steel, low C, annealedª
530
0.26
Steel, high C, annealed®
850
0.15
Steel, alloy, annealed®
700
0.15
Steel, stainless, austenitic, annealed
1200
0.40
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