Re: How to calculate work done while hotrolling slabs into coils

You can calculate the ROLL FORCE and the POWER REQUIREMENT, and,
therefore, get a good idea as to the work.
The ROLL FORCE in flat rolling can be estimated by,

        F = L*w*Y  (F is calculated in Newtons)

where,
        L is the roll-strip contact length (calculated from somple
geometry),
        w is the width of the strip,
        Y is the average TRUE stress of the strip in the roll gap
(calculated from the TRUE STRAIN).

Then, you can calculate the POWER as,

        P = (2*pi*F*L*N)/60,000   (Power is calculated in kW)

where,
        F is in Newtons, L is in meters, and N is the RPM of the roll.

I hope this helps.


Frederick J. Carranti, P.E.
Institute for Manufacturing Engineering
Syracuse University