US 5,182,074 AGranted

Apparatus for continuously cooling metal strip

AssigneeNKK Corporation

InventorsOsami Yoshioka, Naoki Matsui, Hiroaki Sato, Kouji Omori, Masayuki Yamazaki, Masafumi Suzuki, Hitoshi Oishi, Naoto Kitagawa, Takaya Seike, Yasuhiro Araki

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Abstract

An apparatus for continuously cooling a metal strip, which comprises: at least one cooling roll, which is freely rotatable and in contact with a metal strip continuously travelling in the longitudinal direction thereof, for continuously cooling the metal strip, a cooling liquid flowing through the interior of the cooling roll to continuously cool same, a contact area between the surface of the cooling roll and the surface of the metal strip being controllable; and a gas cooler, arranged on the exist side of the at least one cooling roll, for continuously cooling the metal strip by blowing a cooling gas onto the surface of the metal strip so as to achieve a uniform temperature distribution in the width direction of the metal strip after the final cooling thereof, the gas cooler comprising a plurality of mutually independent nozzle headers for blowing the cooling gas onto the surface of the metal strip, and the plurality of nozzle headers controlling at least one of a flow rate and a flow velocity of the cooling gas in the width direction of the metal strip.

Claims20

Dependent claims

An apparatus for continuously cooling a metal strip, which comprises:

at least one cooling roll, which is freely rotatable and in contact with a metal strip continuously travelling in the longitudinal direction thereof, for continuously cooling said metal strip, said cooling roll have a length at least equal to the width of said metal strip, a cooling liquid flowing through the interior of said cooling roll to continuously cool same, and a contact area between the surface of said cooling roll and the surface of said metal strip being controllable;
a gas cooler, arranged on an exit side of said at least one cooling roll, for continuously cooling said metal strip by blowing a cooling gas onto the surface of said metal strip so as to achieve a uniform temperature distribution in the width direction of said metal strip after a final cooling thereof, said gas cooler being arranged in the width direction of said metal strip at a prescribed distance from each of both surfaces of said metal strip, said gas cooler comprising a plurality of mutually independent nozzle headers for blowing said cooling gas onto the surface of said metal strip, and said plurality of nozzle headers controlling at least one of a flow rate and a flow velocity of said cooling gas in the width direction of said metal strip;
and
a first tension regulator comprising at least two rolls, arranged on an entry side of said at least one cooling roll, and a second tension regulator comprising at least two rolls, arranged on the exit side of said gas cooler.

1 more element

An apparatus for continuously cooling a metal strip, which comprises:

a plurality of cooling rolls, which are freely rotatable and in contact with a metal strip continuously travelling in the longitudinal direction thereof, for continuously cooling said metal strip, said plurality of cooling rolls having respective axes which are in parallel with each other and each of said plurality of cooling rolls having a length at least equal to the width of said metal strip, a cooling liquid flowing through the interior of said cooling roll to continuously cool same, and a contact area between the surface of said cooling roll and the surface of said metal strip being controllable;
a gas cooler, arranged on the exit side of said plurality of cooling rolls, for continuously cooling said metal strip by blowing a cooling gas onto the surface of said metal strip so as to achieve a uniform temperature distribution in the width direction of said metal strip after a final cooling thereof, said gas cooler being arranged in the width direction of said metal strip at a prescribed distance from each of both surfaces of said metal strip, said gas cooler comprising a plurality of mutually independent nozzle headers for blowing said cooling gas onto the surface of said metal strip, and said plurality of nozzle headers controlling at least one of a flow rate and a flow velocity of said cooling gas in the width direction of said metal strip;
and
a first tension regulator comprising at least two rolls, arranged on an entry side of said plurality of cooling rolls, and a second tension regulator comprising at least two rolls, arranged between said plurality of cooling rolls and said gas cooler.

1 more element

Dependencies are inferred from the claim text.