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.
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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
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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