Patent ID: 6463777
Filing Date: 2002-10-15
Classification: B21B

Abstract:
A method of producing a metal strip from a heat formed strip, by the continuous running thereof, in a treatment line comprising, successively, in one running direction, scale eliminating means, accumulating means, cold rolling means, a shearing element and winding means, said method comprising the steps of:varying a rolling speed of said metal strip, in order to adapt to a change in operating constraints, over a very wide range from less than 1 in/mm to more than 1000 in/mm; cold rolling said metal strip in a maximum of three passes; and determining a working roll diameter so that a rolling power needed to maintain a specified thickness reduction rate at each pass remains compatible, over the whole speed variation range, with the specified thickness adjustment and a desired product flatness, taking the characteristics of said metal strip into account.