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1.发明授权
公开(公告)号：US5074354A
公开(公告)日：1991-12-24
申请号：US547307
申请日：1990-07-03
IPC分类号： B22D11/113 , B22D11/10 , B22D41/50
摘要： A continuous casting method of a reduced height with a horizontal or almost horizontal oscillating crystallizer, whereby an immersed teeming nozzle teems molten metal into the crystallizer below the meniscus, regulation of the flow being obtained with regulation means corresponding to the formula: V.gtoreq.K.multidot..sqroot.2gh-2p/.rho., a pressure being kept within a tube portion of the teeming nozzle at least transiently which is correlated with the pressure surrounding the teeming nozzle itself and with the pressure acting on the meniscus of the molten metal in the crystallizer, the pressure within the tube portion of the teeming nozzle being such as will at least hinder the migration of gas from the exterior of the nozzle to the inside of the bore of the tube portion.
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2.发明授权
公开(公告)号：US5072779A
公开(公告)日：1991-12-17
申请号：US238301
申请日：1988-08-31
IPC分类号： B22D11/113 , B22D11/10 , B22D41/50
摘要： Casting method for a continuous casting machine of a reduced height with a horizontal or almost horizontal oscillatory crystallizer, whereby an immersed teeming nozzle teems molten metal into the crystallizer below the meniscus, regulation of the flow being obtained with regulation means. Pressure is kept within a tube portion of the teeming nozzle at least transiently which is related to the pressure surrounding the teeming nozzle itself and with the pressure acting on the meniscus of the molten metal in the crystallizer, the pressure within the tube portion of the teeming nozzle being such as will at least hinder the migration of gas from the exterior of the nozzle to the inside of the bore of the tube portion. An immersed teeming nozzle for a continuous casting machine of a reduce height is also disclosed. The teeming nozzle teems the metal below the meniscus of molten metal in an oscillatory crystallizer. A device to regulate the flow of the molten metal is included, the nozzle being suitable to perform the above method and comprising means at least to hinder a migration of gas from the exterior to the inside of the nozzle.
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