摘要:
The present invention relates to the casting of molten metal, in particular of molten steel. The invention relates to a device allowing a safe opening of a blockage of a taphole of a metallurgical vessel equipped with a slide gate valve comprising a mobile plate, for example of a metallurgical ladle. The opening device of the invention comprises a head (3), a pushing rod (2) a guiding tube (1) and transmitting means (4,61,62,63). According to the invention, the opening device is actuated by the actuation of the mobile plate in the slide gate valve.
摘要:
The unplugging apparatus includes a conduit which extends through the wall of an annular member to a generally cylindrical lance housing disposed within the annular member. The upper end of the lance (41) housing is disposed above and proximate the elevation of the conduit (43). A bushing is disposed within the housing at its upper end and guides upward movement of a tube (47) which is partially disposed within the housing. The tube carries a charge of combustible material and has an upper end disposed outside the housing and a bottom flared portion disposed within the housing. The bushing defines a stop surface for the bottom flared portion of the tube. A combustible collar (75) is mounted on the tube upper end and surrounds a portion of the charge of combustible material which extends past the tube upper end.
摘要:
The invention relates to a device for opening a pouring channel of metallurgical vessels such as foundry ladles or the like, wherein the pouring channel is arranged on the lined bottom of the vessel, comprising at least two slide plates (5, 7) which have a sliding shutter, comprising a fixed slide plate (5) connected to the vessel and at least one displaceable slide plate (7) operatively connected to same, wherein all slide plates (5, 7) have at least one pouring opening (6, 8) and can be displaced with respect to each other such that for opening and for the melt to flow out, the pouring openings (6, 8) are covered. In order to achieve a quality improvement by reducing the introduction of oxide into the tundish and moulds and hence an improvement in the cost-effectiveness, according to the invention, the need for sliding filling sand is completely removed by arranging a stopper (12) above the sliding shutter, the size of which exceeds the diameter of the pouring channel and which is connected to the lining of the vessel, and the sliding shutter has a gas supply line (10) to which pressurised gas can be applied such that the stopper (12) can be pneumatically removed from the closure position thereof to release the pouring channel.
摘要:
The invention relates to an ejector (10) for opening a steel casting ladle channel provided with a bottom sliding closure (1) comprising an ejector arrow (12) which is insertable into the casting bush channel (7) of the bottom sliding closure, is exposed to the action of the preloaded ejector spring (13) held by the ejector base (11) in the charging direction thereof, is supported by the fixed plate (2) of the bottom sliding closure (1), when it is closed, and can be ejected into the casting channel above the fixed plate (2) of the opening of the bottom sliding closure (1) under the tension of the ejector spring (13). The aim of said invention is to provide said type ejector with a larger open cross-section for draining a filling mass located in the casting channel. For this purpose, the ejector arrow (12) is pivotally mounted on the ejector base (11) in such a way that the sliding plate (5) is displaceable with respect to the fixed plate (2) by the friction thereon and the point of said ejector arrow (12) is pivoted against the edge of the through opening of sliding plate (5), which is placed behind it in the displacement direction.
摘要:
Appareil pour déboucher un orifice de décharge (17) de récipient dans une poche de coulée ou avant-creuset (15) à garniture intérieure réfractaire utilisé dans le coulage d'acier fondu. L'appareil (1) de débouchage est placé directement en-dessous de l'orifice de décharge bouché à l'intérieur d'un évidement axial d'un tube de versement réfractaire (67). Ledit appareil (1) comprend un logement tubulaire (35) contenant, à l'intérieur dudit tube, un tube (39) pouvant être déplacé axialement et dont l'extrémité supérieure (49) est située au-dessus du logement (35) et l'extrémité inférieure ouverte (43) est située à l'intérieur du logement. Un conduit (33) communique avec l'intérieur du tube à une extrémité et avec une source de gaz sous pression à l'autre extrémité. Une pluralité d'éléments de centrage (59) sont disposés sur le logement tubulaire dont ils dépassent radialement, et servent à aligner axialement le logement par rapport à l'évidement du tube de versement et à l'orifice de décharge.
摘要:
The present invention relates to the casting of molten metal, in particular of molten steel. The invention relates to a device allowing a safe opening of a blockage of a taphole of a metallurgical vessel equipped with a slide gate valve comprising a mobile plate, for example of a metallurgical ladle. The opening device of the invention comprises a head (3), a pushing rod (2) a guiding tube (1) and transmitting means (4,61,62,63). According to the invention, the opening device is actuated by the actuation of the mobile plate in the slide gate valve.
摘要:
The invention provides a means of introducing gas into the outlet to remove an obstruction. Accordingly, the invention provides an apparatus to open and close an outlet in a molten metal handling vessel which includes a valve (6) communicating with the outlet (5a) and having relatively movable valve parts (7, 8), the valve parts having openings (10, 12) which are displaced from one another to close the valve and, hence, the outlet (5a) and which are in communication with each other and with the outlet (5a) to open the outlet, whereby the molten metal can flow out of the vessel, characterised in that there is provided a frangible tube (13) through which gas can be passed, the tube (13) being of sufficient length to extend through both valve parts (7, 8) and into the outlet (5a) of the vessel, whereby gas can be passed into the outlet and then opening of the valve (6) by relative movement of the valve parts (7, 8) breaks the tube (13) so that it does not obstruct opening.
摘要:
The unplugging apparatus includes a conduit which extends through the wall of an annular member to a generally cylindrical lance housing disposed within the annular member. The upper end of the lance (41) housing is disposed above and proximate the elevation of the conduit (43). A bushing is disposed within the housing at its upper end and guides upward movement of a tube (47) which is partially disposed within the housing. The tube carries a charge of combustible material and has an upper end disposed outside the housing and a bottom flared portion disposed within the housing. The bushing defines a stop surface for the bottom flared portion of the tube. A combustible collar (75) is mounted on the tube upper end and surrounds a portion of the charge of combustible material which extends past the tube upper end.
摘要:
Method for controlling and opening casting holes of containers holding liquid metals, characterized by providing a pressure fluid supply conduit (6) which opens out at the base of the spout (3), a variable speed distributor (7) and a pressure tank (8) being arranged on the supply conduit, and by providing successive pulses to propel inside the container the solidified metal plug.
摘要:
Method and device for opening the outlet of a molten metal handling vessel, comprising a valve (6) having relatively moveable valve parts (7, 9 and 8, 11) and a frangible tube (13) through which gas can be passed, the tube (13) extending through the valve parts (7, 9 and 8, 11) into the outlet (5a) of the vessel, whereby opening the valve (6) by relative movement of the valve parts (9, 11) breaks the tube so that it does not obstruct opening, the end of the tube (13) having a cup-shaped seating portion (13a) to mate with a similarly-shaped recess in or adjacent the valve (6).