METHOD FOR BONDING HOT ROLLED STRIPS

摘要

PURPOSE: A method for bonding hot rolled strips is provided which not only performs bonding operation promptly, but also reduces length of bonding line. CONSTITUTION: In a method for bonding rough rolled steel sheets having thickness of t, the method for bonding hot rolled strips comprises the steps of overlapping tail end part of preceding strip and top end part of succeeding strip with each other; positioning an overlapped part of the strips between a pair of bonding rolls installed in such a way that the pair of bonding rolls are movable into a fixed type bonding machine housing, and a gap between the pair of bonding rolls is narrowed when the pair of bonding rolls are moved along a moving direction of the strips; and moving the pair of bonding rolls along a moving direction of the strips in the state that the overlapped part of the strips is pressed by the pair of bonding rolls, thereby bonding the overlapped part of the strips by pressing as gradually reducing thickness of the overlapped part of the strips, and controlling the pair of bonding rolls so that final thickness of a bonding part of the strips bonded is maintained to 0.90 t to 0.95 t.