Question

A continuous hot rolling mill has two stands. Thickness of the
starting plate = 25 mm and width = 300 mm. Final thickness is
to be 13 mm. Roll radius at each stand = 250 mm. Rotational
speed at the first stand 20 rev/min. Equal drafts of 6 mm
are to be taken at each stand. The plate is wide enough
relative to its thickness that no increase in width occurs.
Under the assumption that the forward slip is equal at each
stand, determine
(a)speed Vr at each stand,
(b)Forward-slip s
(c)Also, determine the exiting speeds at each rolling stand, if
the entering speed at the first stand 26 m/min.
​

Answer 1

Answer:

A continuous hot rolling mill has two stands. Thickness of the starting plate = 25 mm and width = 300 mm. Final thickness = 13 mm.

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