STEEL-STRIP PRODUCTION APPARATUS

WIPO Patent Application WO/2016/024537

A1

The present invention provides a steel-strip production apparatus with which a hot-dip-plated steel strip and a cold-rolled steel strip can be produced in the same facility, while inhibiting discharge of the atmospheric gas in a continuous annealing furnace to the furnace exterior, and infiltration of atmospheric air into the furnace. A steel-strip production apparatus (1) according to the present invention is characterized by being provided with: a continuous annealing furnace (2); a snout (6) connected to the continuous annealing furnace (2); a contact-type seal plate device (10) and non-contact-type seal roll devices (20) which are installed at the entrance side of the snout (6) in sequence along the conveyance direction of a steel strip (S); a movable hot-dip-plating tank (5); and a roll (31) which changes the passing direction of the steel strip (S) passed through the snout (6). The steel-strip production apparatus (1) is further characterized in that switching is performed between: a hot-dip-plated steel strip production means which produces a hot-dip-plated steel strip by introducing the steel strip (S) into the hot-dip-plating tank (5) after the steel strip (S) is continuously annealed in the continuous annealing furnace (2); and a cold-rolled steel strip production means which produces a cold-rolled steel strip by passing the steel strip therethrough such that the steel strip does not pass through the hot-dip-plating tank (5).

IIDA SACHIHIRO (JP)
KAJITANI HIROSHI (JP)

PCT/JP2015/072475

February 18, 2016

August 07, 2015

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JFE STEEL CORP (JP)
PRIMETALS TECHNOLOGIES JAPAN LTD (JP)

C21D9/56; C23C2/00

JP2590152B2	1997-03-12
JPS6393829A	1988-04-25

See also references of EP 3181709A4

SAKAI, HIROAKI (JP)
Hiroaki Sakai (JP)

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