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US 5,205,982 AGranted
Tundish flow control
AssigneesIshikawajima-Harima Heavy Industries Co., Ltd., John Lysaght (Australia) Limited
InventorsHisahiko Fukase, Walter Blejde
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AssigneesIshikawajima-Harima Heavy Industries Co., Ltd., John Lysaght (Australia) Limited
InventorsHisahiko Fukase, Walter Blejde
Estimating the term…
An apparatus for forming a strip of metal which includes: a tundish for receiving molten metal; a metal delivery nozzle located below the tundish in a position to receive molten metal flowing downward from the tundish; and a pair of chilled rollers, which are capable of being contra-rotated, positioned below the metal delivery nozzle which are adapted to receive molten metal from the metal delivery nozzle into a pool of molten metal formed above the nip of the roller. The tundish is equipped with a series of openings in the base thereof directed toward the metal delivery nozzle through which the molten metal flows, and with an outlet flow control means. The outlet flow control means is a movable plate with apertures therein which substantially coincide with the apertures in the base of the tundish. Means are provided to move the outlet control plate to cause its apertures to go into and/or out of alignment with the apertures in the base of the tundish and thereby regulate the flow of molten metal therethrough. One or more outlet flow control plates can be provided so that flow through all or only a portion of the tundish apertures can be regulated at any given time.
In an apparatus for casting metal strip comprising a pair of parallel casting rollers forming a nip between them, a metal delivery nozzle disposed above and extending along the nip for delivery of molten metal downwards into the nip along its length, metal confining means at the ends of the nip to confine metal delivered into the nip by the metal delivery nozzle into a casting pool within the nip, and a tundish disposed above the metal delivery nozzle for downwardly supply of molten metal to the metal delivery nozzle, the improvement which comprises:
Apparatus for casting metal strip, comprising a pair of parallel casting rollers forming a nip between them, a metal delivery nozzle for delivery molten metal into the nip between the casting rollers, and a tundish for supply of molten metal to the metal delivery nozzle, wherein said tundish has a plurality of outlet openings to permit the flow of metal from said tundish into said delivery nozzle and is fitted with outlet flow control means, comprising moving plate means having a plurality of spaced apertures alignable with said tundish openings via said apertures in said moving plate means, and actuator means operable to move said moving plate means to move said apertures therein into and out of alignment with said tundish outlet openings for regulation of metal flow from said tundish into said metal delivery nozzle, and wherein said plate means comprises a first plate provided with a majority of said apertures and two separate plates disposed one to each side of said first plate which separate plates are each provided with one of said apertures and are independently movable by said actuator means.
A tundish having a plurality of outlet openings for flow of metal therethrough from said tundish;
Dependencies are inferred from the claim text.