C - Chemistry – Metallurgy – 21 – D
Patent
C - Chemistry, Metallurgy
21
D
38/6
C21D 9/573 (2006.01)
Patent
CA 1233984
ABSTRACT OF THE DISCLOSURE A strip cooling apparatus for a continuous annealing fornace for continuously treating longitudinally fed steel strip has a pair of cooling gas chambers attached to the furnace walls on both sides of the strip so that the front of each chamber faces the strip. Each cooling gas chamber has nozzles having round outlets opening toward the strip surface on its front side to shoot forth a cooling gas jet against the strip furnace. The nozzle is separated from the strip by a distance z not larger than 70 mm and projected from the front of the cooling gas chamber by a length of not less than (100 - z) mm. The cooling apparatus also has a pair of rotatably holding rolls reciprocatably attached to the furnace walls to press the strip at a right angle thereto. The holding rolls holds the strip and prevents the occurrence of fluttering.
494945
Fukuzawa Tetsuo
Ichida Kozaburo
Mitsuzuka Masashi
Nagira Norichika
Nanba Tadashige
Fetherstonhaugh & Co.
Nippon Steel Corporation
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