Abstract:
A casting method includes coupling a mold to a crucible, the mold having one or more part-defining cavities and one or more feed passageways. A first rotating of the crucible and mold pours molten metal from the crucible through the one or more feed passageways into the one or more part-defining cavities. A second rotating of the crucible and mold returns molten metal from the one or more feed passageways, while leaving the part defining cavities filled.
Abstract:
1. The present invention concerns a gas purging plug (1) for blowing gas into a metallurgical vessel comprising: 2. (a) An elongated body (2) made of a first refractory material and extending from a first, inlet end (2a) to a second, outlet end (2b) over a distance, H, measured along a central longitudinal axis (X1) comprising, 3. (b) At least one gas flow path (3) fluidly connecting a gas inlet (3a) located at said first inlet end of said elongated body to a gas outlet (3b), located at the opposite second, outlet end; 4. (c) A final visual wear indicator (5) in the form of an elongated core extending from the first inlet end (2a) to a first distance, h1, measured along the central longitudinal axis (X1), which is less than the length, H, of the elongated body, h1
Abstract:
Die Erfindung betrifft einen Elektronenstahl-Schmelzofen sowie ein Verfahren zum Betrieb eines Elektronenstrahl-Schmelzofens mit einer Mehrzahl von Tiegeleinrichtungen (24), die jeweils zumindest einen Tiegel (22, 23) mit einem mittels einer Abzugseinrichtung verfahrbaren Tiegelboden zum Abzug von erstarrenden Formteilen aufweisen, wobei ein Verteilerherd (19, 20) mit Schmelze aus einem Ofenherd (17) gespeist wird und nachfolgend eine Speisung der Tiegel mit Schmelze aus dem Verteilerherd erfolgt, wobei die Regelung der Zufuhr der Schmelze vom Ofenherd in den Verteilerherd und/oder vom Verteilerherd in einen Tiegel einer Tiegeleinrichtung mittels einer Verflüssigung oder Verfestigung des aufgeschmolzenen Materials erfolgt.
Abstract:
A thermally efficient cover for the molten metal held in a furnace, tundish, ladle, crucible or other containment vessel. Through substantially horizontal movement, this cover allows for periodic removal, particularly by retraction, for accessing contents of that furnace from a top aperture in the containment vessel. This invention further relates to a covered furnace system and methods of use.
Abstract:
The invention relates to a foundry ladle or an intermediate vessel (1) for receiving a liquid metal for further processing of said liquid metal, wherein at least a part of the wall (2) of the foundry ladle or of the intermediate vessel (1) comprises at least one measuring element (3) for detecting the temperature and/or the mechanical load. In order to be able to detect the temperatures and/or the mechanical load in the wall of the foundry ladle or in the intermediate vessel precisely, quickly and along the extension of the wall, according to the invention the measuring element (3) comprises at least one optical waveguide which is integrated in the wall (2) of the foundry ladle or of the intermediate vessel (1).
Abstract:
An exemplary embodiment of the invention provides a molten metal containment structure, including a vessel having an internal volume for containing molten metal and an open upper end. The structure further includes a cover for the vessel having an underside facing the internal volume, the cover being movable between a closed position, covering the open upper end of the vessel with the underside of the cover, and an open position in which the cover is remote from the open upper end of the vessel to allow access to the internal volume from one side of the structure. The cover is attached to at least one lifting arm (preferably two or more) and at least on rotation control arm (preferably two or more). The lifting arm(s) operates to guide the cover from the open position to the closed position, and vice versa. The rotation control arm(s) operates to control pivoting of the cover during movement from the closed position to the open position, and vice versa, to prevent exposure of the underside of the cover, which in operation is very hot, to a person positioned adjacent to the structure at the aforesaid one side thereof. The lifting arm(s) and/or rotation control arm(s) provide a force that at least partially counterbalances a weight of the cover.
Abstract:
An apparatus for the removal and replacement of a lid on a metallurgical transport vessel such as a ladle or a torpedo car. The apparatus comprises a fame, means for supporting the frame such that the vessel may be moved into position thereunder, a linkage including at least one lifting member pivotally connected to the frame, and at least one actuator connected to the linkage. The actuator is operable to move the lifting member such that when the vessel is moved to a designated position below the apparatus, the lifting member can be moved by the actuator and linkage from a first position providing clearance above the vessel, through a curved path to an intermediate position where it engages the lid, providing a vertical lifting force and a horizontal hinge releasing force to the lid, and to a second position where the lid is raised to a sufficient heights to clear the vessel. The lifting member may subsequently be moved back by means of the actuator and linkage through a reverse curved path to the first position, and thereby lower the lid back on to the vessel.
Abstract:
The invention relates to a robotized plant comprising an iron and steel work area having a hot and/or a danger zone, and further comprising at least one iron and steel operating unit and an industrial robot (R2a - R13) associated with the at least one iron and steel operating unit. The aim of the invention is to devise a plant which allows the work areas in an iron and steel factory to be designed in such a manner that they are safer and more ergonomical while preferably automating the work processes as far as possible. For this purpose the industrial robot (R2a, R3a, R3b, R3c, R3d, R3e, R4a, R4b, R4c, R5a, R5b, R5c, R6, R7, R7a, R8, R9, R10, R11, R12, R13) carries out the processes associated in the iron and steel factory with the at least one iron and steel operating unit in the hot and/or danger zone of the iron and steel plant.