Concept explainers
The velocity of the strip leaving the rolls.
Answer to Problem 6.101P
The velocity of the strip leaving the rolls is
Explanation of Solution
Given:
The coefficient of friction is
The radius of the roll is
The speed of the roll is
The initial thickness of the strip is
The final thickness of the strip is
The width of the strip is
Formula used:
The expression for length of arc of contact is given as,
Here,
exponent.
The expression for true strain is given as,
The expression for average thickness is given as,
The expression for average flow stress is given as,
Here,
The expression for roll force is given as,
The expression for power of roll is given as,
The expression for velocity of strip is given as,
Calculation:
The length of arc of contact can be calculated as,
The true strain can be calculated as,
The average thickness can be calculated as,
Refer to table 2.2 “The strength coefficient and strain hardening exponent”is given as,
The average flow stress can be calculated as,
The roll force can be calculated as,
On further solving as,
The power of roll can be calculated as,
On further solving as,
The velocity of strip can be calculated as,
Conclusion:
Therefore, the velocity of the strip leaving the rolls is
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Chapter 6 Solutions
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