KR920702428A - Continuous cooling device of metal strip - Google Patents

Abstract

A system for continuously cooling a metal strip which comprises at least one cooling roll rotatable and in contact with the metal strip, for cooling the metal strip continuously moving in the lengthwise direction thereof, said cooling roll allowing a cooling liquid to flow therethrough for continuously cooling said cooling roll, and a contact area between the surface of said cooling roll and the surface of the metal strip being controllable; a gas cooling machine disposed at the outlet of said cooling roll, for continuously cooling the metal strip by blowing the cooling gas onto the metal strip in such a manner that the distribution of temperature in the direction of a plate width of the metal strip is kept uniform after the final cooling, said gas cooling machine including a plurality of nozzle headers being independent of one another, for blowing the cooling gas onto the metal strip, and said plurality of nozzle headers controlling at least one of the flowrate and the flow velocity of the cooling gas in the direction of the plate width of the metal strip; a first tension adjusting machine disposed at the inlet of the said cooling roll; and a second tension adjusting machine disposed at the outlet of the gas cooling machine. <IMAGE>

Description

Continuous cooling device of metal trip

Since this is an open matter, no full text was included.

1 is an explanatory diagram showing a first embodiment of the apparatus of the present invention. 2 is a process flow diagram showing an example of a cooling system using the apparatus of the first embodiment of the present invention. 3 is a schematic perspective view showing one example of a gas cooler used in the apparatus of the present invention.

Claims (12)

At least one cooling roll and freely rotating roller contacting the metal strip for continuously cooling the metal strip continuously moving in the longitudinal direction, the cooling roll has a length that is at least equal to the width of the metal strip so that the cooling liquid The inside of the cooling roll is continuously cooled to control the contact area between the surface of the cooling roll and the surface of the metal strip; And arranging at least one cooling roll for continuously cooling the metal strip as the cooling gas is sprayed onto the surface of the metal strip so that the temperature distribution in the width direction of the metal strip after the final cooling is uniform. Gas coolers, gas coolers described above, are arranged in the width direction of the metal strip at regular intervals from the angles of both surfaces of the metal strip, and the gas coolers are independent of each other to spray cooling gas onto the surface of the metal strip. It consists of a number of nozzle headers, each of which consists of two nozzle heads for the inlet of one or more cooling rolls in continuous cooling of the metal strip which controls at least one of the flow rate and flow rate of the cooling gas in the width direction of the metal strip. It was arranged with the first tension regulator which becomes the above roll, and the Continuous cooling system of the metal strip, characterized in that the second tension regulator with at least two rolls is arranged to go into. The gas cooler according to claim 1, wherein a thermometer for continuously measuring the temperature distribution in the transverse direction of the metal strip after the final cooling is provided on the exit side of the gas cooler, and according to the temperature distribution measured by the thermometer, And at least one of a flow rate and a flow rate of the cooling gas to be sprayed onto the surface of the metal strip in the nozzle header of the metal strip in the width direction of the metal strip. 2. The continuous cooling apparatus of a metal strip according to claim 1, wherein the cooling gas comprises hydrogen gas in an amount in the range of 40 to 90 vol.% And nitrogen gas in an amount in the range of 10 to 60 vol.%. The at least one cooling roll of claim 1 comprising a plurality of cooling rolls whose axes are parallel to each other, each of the plurality of cooling rolls being directed to a metal strip to control the contact area between the metal strips. Continuous chiller of metal strips, characterized in that removable. The contact area between each surface of the first cooling roll and the metal strip surface of the plurality of cooling rolls is larger than the contact area between each surface of the latter cooling roll and the metal strip surface. Continuous cooling device of a metal strip, characterized in that. A separate gas for continuously cooling the metal strip according to claim 4 or 5 by spraying a gas for cooling onto the surface of the metal strip so that the temperature distribution in the width direction of the metal strip after the final cooling is uniform. And a cooler disposed between the first tension regulator and the plurality of cooling rolls. A separate gas for continuously cooling the metal strip according to claim 4 or 5 by spraying a gas for cooling onto the surface of the metal strip so that the temperature distribution in the width direction of the metal strip after the final cooling is uniform. A chiller continuous metal strip, characterized in that the cooler is arranged in the middle of several cooling rolls. A separate gas for continuously cooling the metal strip according to claim 4 or 5 by spraying a gas for cooling onto the surface of the metal strip so that the temperature distribution in the width direction of the metal strip after the final cooling is uniform. The cooler is arranged between the first tension regulator and several cooling rolls, and the metal strip is sprayed onto the surface of the metal strip by spraying the cooling gas onto the surface of the metal strip so that the temperature distribution in the width direction of the metal strip after the final cooling is uniform. Continuous cooling apparatus for metal strips, characterized in that another gas cooler is arranged in the middle of several cooling rolls for continuously cooling the gas. 6. The gas spray nozzles according to claim 4 or 5, wherein a plurality of gas spray nozzles are provided on the cooling roll side toward the contact surface between each surface and the surface of the metal strip. And continuously cooling the metal strip by spraying a cooling gas onto the surface of the metal strip so that the temperature distribution in the width direction of the metal strip after the final cooling is uniform. 6. The gas spray nozzles according to claim 4 or 5 are provided on the cooling roll side toward the contact surface between each surface of the several cooling rolls and the surface of the metal strip. And continuously cooling the metal strip by spraying a gas for cooling onto the surface of the metal strip so that the temperature distribution in the width direction of the metal strip after the final cooling becomes uniform. 6. A continuous cooling apparatus for a metal strip according to claim 4 or 5, wherein a third tension regulator comprising two or more rolls is arranged between the plurality of cooling rolls and the gas cooler. 2. The cooling chamber of claim 1, wherein the one or more cooling rolls is a single cooling roll, the single cooling roll having a surface of a single cooling roll on each of the entry and exit sides of the single cooling roll with respect to the metal strip. Guided rolls are provided for controlling the contact area between the surfaces of the metal strips, each of the guided rolls being movable along the outer periphery of a single cooling roll and having at least two sides into the entry of a single cooling roll. And a first tension regulator made of two rolls, and a second tension regulator made of at least two rolls on the exit side of the gas cooler. ※ Note: This is to be disclosed by the original application.