to Shapesinking Ink Ant Close Pens Example 7 A plate that is 250 mm wide and 25 mm thick is to be reduced in a single pass in a two-high rolling mill to a thickness of 20 mm. The roll has a radius = 500 mm, and its speed = 30 m/min. The work material has a strength coefficient = 240 MPa and a strain hardening exponent = 0.2 and a rotational speed of 9.55 rev/min. Determine (a) roll force, (b) roll torque, and (c) power required to accomplish this operation d) Knowing that reducing the roll's radius to 250 mm will increase rotational speed to 19.1 rev/min, what effect will it have on the values of roll force, torque and power? Prove it. What other parameters affect rolling force and torque? to 25 no