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initial thickness times width times contact length, equals final thickness times width times length
initial thickness times width times velocity equals final thickness times width times velocity
slip is the final velocity minus the roll speed all over the roll speed
draft is initial thickness (mm/in) minus final thickness
reduction is draft over initial thickness
max draft is friction coefficient squared times radius
rolling force is initial width times the integral of pressure from 0 to contact length
contact length is the square root of radius times initial minus final thickness
Rolling force is avg flow stress times initial width and length
avg flow stress is given constant (MPa) times strain to the power of given constant n all over 1+n
power is 2pi times N (rotational speed) times rolling force times contact length
forging strain is ln initial height over final height. (when h is final height strain is max)
forging force to upset is flow stress times area
flow stress is constant times strain to the power of constant
