Method and device for leveling metal strips to be inserted into the continuous annealing furnace.

摘要

A method for leveling a metal strip performs leveling operation by opening leveling rolls at a predetermined position relative to the welded joint and close at a predetermined position relative to the welded joint. A tension to be exerted on the metal strip while the leveling rolls are held open is set at a given value in relation to the metal strip length where the leveling rolls are held open. The tension to be exerted on the metal strip while the leveling rolls is selected so that the tension may cause a given rate of elongation on the metal strip and whereby levels the metal strip. A leveling device is applicable for implementing the leveling process including quck open and quick close at the welded joint of the strips. The leveling device may features in that the leveling rolls as held open and thus released from the metal strip is self-propelled to rotate.