EP 0145485 A2 19850619 - Method of controlling the temperature of steel strip in the cooling zone of a continuous annealing furnace.
Title (en)
Method of controlling the temperature of steel strip in the cooling zone of a continuous annealing furnace.
Title (de)
Verfahren zur Temperatursteuerung von Stahlbändern in der Kühlzone von Durchlaufglühöfen.
Title (fr)
Procédé pour commander la température de rubans d'acier dans la zone de refroidissement de fours de traitement thermique continu.
Publication
Application
Priority
JP 23498683 A 19831215
Abstract (en)
The invention relates to a method of controlling the temperature of a steel strip (1) in the cooling zone of a continuous annealing furnace which is provided with a plurality of cooling rolls (2 to 5) in which a coolant is circulated via a circuit (14 to 18) for cooling the strip as it is brought into contact with the outer peripheral surfaces of the rolls, the coolant temperature being controlled via temperature control means (19 to 21), and a plurality of gas jet coolers (6 to 9) for blowing cooling gas against the strip. In accordance with the invention, the flow rate of the cooling gas, the angle at which the strip is brought into contact with the surfaces of the rolls and the coolant temperature are controlled selectively in the order of, first, at least one of either the flow rate of coolant, or the angle, and then the coolant temperature, so that the strip may be cooled quickly and efficiently to a predetermined temperature irrespective of any change in strip gauge during the continuous annealing of a plurality of strips which are different gauge.
IPC 1-7
IPC 8 full level
C21D 9/573 (2006.01); C21D 11/00 (2006.01)
CPC (source: EP KR)
C21D 9/573 (2013.01 - EP KR)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0145485 A2 19850619; EP 0145485 A3 19861210; EP 0145485 B1 19900307; CA 1239570 A 19880726; DE 3481528 D1 19900412; ES 539293 A0 19851116; ES 8602459 A1 19851116; JP S60128220 A 19850709; JP S639569 B2 19880229; KR 850004995 A 19850819; KR 890002799 B1 19890731; ZA 849681 B 19860430
DOCDB simple family (application)
EP 84308613 A 19841211; CA 470186 A 19841214; DE 3481528 T 19841211; ES 539293 A 19841214; JP 23498683 A 19831215; KR 840007948 A 19841214; ZA 849681 A 19841212