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A 300 mm wide and 20 mm thick strip of Steel is fed through a rolling mill with two powered rolls of radius 200 mm. The single pass rolling operation reduces the thickness to 17 mm with rollers operating at 40 RPM. The flow strength coefficient is 375 MPa for the metal and strain hardening exponent is 0.11. The coefficient of friction between the strip and the rollers is 0.1. Use the information to answer the following: a.) Is the rolling operation possible for the given draft? b.) What is the roll force required? c.) What is the roll torque required? d.) What is the input power required if the system is 80% efficient?

A 300 mm wide and 20 mm thick strip of Steel is fed through a rolling mill with two powered rolls of radius 200 mm. The single pass rolling operation reduces the thickness to 17 mm with rollers operating at 40 RPM. The flow strength coefficient is 375 MPa for the metal and strain hardening exponent is 0.11. The coefficient of friction between the strip and the rollers is 0.1. Use the information to answer the following: a.) Is the rolling operation possible for the given draft? b.) What is the roll force required? c.) What is the roll torque required? d.) What is the input power required if the system is 80% efficient?

Elements Of Electromagnetics
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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Q.B4. A 300 mm wide and 20 mm thick strip of Steel is fed through a rolling mill with two powered rolls of radius 200 mm. The single pass rolling operation reduces the thickness to 17 mm with rollers operating at 40 RPM. The flow strength coefficient is 375 MPa for the metal and strain hardening exponent is 0.11. The coefficient of friction between the strip and the rollers is 0.1. Use the information to answer the following: a.) Is the rolling operation possible for the given draft? b.) What is the roll force required? c.) What is the roll torque required? d.) What is the input power required if the system is 80% efficient? e.) In a forging operation flash formation is common and useful at times. Using a drawing describe a flash formation in forging and why is this useful for the operation?
Transcribed Image Text:Q.B4. A 300 mm wide and 20 mm thick strip of Steel is fed through a rolling mill with two powered rolls of radius 200 mm. The single pass rolling operation reduces the thickness to 17 mm with rollers operating at 40 RPM. The flow strength coefficient is 375 MPa for the metal and strain hardening exponent is 0.11. The coefficient of friction between the strip and the rollers is 0.1. Use the information to answer the following: a.) Is the rolling operation possible for the given draft? b.) What is the roll force required? c.) What is the roll torque required? d.) What is the input power required if the system is 80% efficient? e.) In a forging operation flash formation is common and useful at times. Using a drawing describe a flash formation in forging and why is this useful for the operation?
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