The team is rolling a 300-mm-wide strip 25-mm thick with two powered rolls each of radius = 250 mm and with entrance speed = 16m/min. The work thickness is to be reduced to 22 mm in one pass at a roll speed of 50 rev/min. The work material has a flow curve defined by K = 275 MPa and n = 0.15, and the coefficient of friction between the rolls and the work is assumed to be 0.12. a. Determine if the friction is sufficient to permit the rolling operation to be accomplished. b. Calculate the roll force. Roll speed, V, c. Calculate the roll torque and horsepower. R=roll radius p-rol pressure

The team is rolling a 300-mm-wide strip 25-mm thick with two powered rolls each of radius = 250 mm and with entrance speed = 16m/min. The work thickness is to be reduced to 22 mm in one pass at a roll speed of 50 rev/min. The work material has a flow curve defined by K = 275 MPa and n = 0.15, and the coefficient of friction between the rolls and the work is assumed to be 0.12. a. Determine if the friction is sufficient to permit the rolling operation to be accomplished. b. Calculate the roll force. Roll speed, V, c. Calculate the roll torque and horsepower. R=roll radius p-rol pressure

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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