Continual heat treatment manner null of roll attaching kimono removal manner and the metal band which are while continual heat treatment

摘要

PROBLEM TO BE SOLVED: To provide a roll deposit removing method for continuous heat treatment equipment which is generally applicable irrespective of the kind of metals, capable of surely removing the roll deposit, without impairing the productivity, and to provide a continuous heat treatment method for metallic strip capable of effectively preventing the occurrence of surface defect caused by the roll deposit. ;SOLUTION: In this method for removing the roll deposit stuck to a carrying roll in the continuous heat treatment equipment, a metallic strip containing ≥1.2% and more preferably, 3.8% one or two kinds of Cr and Ni, is passed through the continuous heat treatment equipment at the reaction temperature (e.g. ≥800°C) with the roll deposit. It is effective to remove the roll deposit with the specified operational intervals, or arbitrarily, or after the treatment of at least one kind of the deposit containing Si, the deposit containing Mn, and the deposit containing Si-Mn, and/or before the treatment of at least one kind of a material high in the required level for the surface quality and a material soft and easy to damage.;COPYRIGHT: (C)1999,JPO