Patent ID: 7584638

Claim:
A device for calibrating a multi-roll leveler for leveling a metal strip, said device comprising at least one assembly consisting of two series of rolls, namely lower rolls and upper rolls, placed facing each other so as to imbricate the rolls of one series into those of the other, said series of rolls being placed substantially parallel to each other and perpendicular to the run direction of the strip to be leveled, wherein said device furthermore includes at least one rigid measurement bar of sufficient length to be positioned in said leveling direction between said assembly of said upper and lower rolls, extending over all the rolls, rigid protrusions integral with the bar reproducing, when they are placed plumb with the lower rolls, the action of said lower rolls and their mechanical properties, and an instrumented plate that rests on these protrusions and is fastened to one of them at around the middle of the bar, said instrumented plate having extensometers for measuring its elastic deformations.