Sealed evacuatable crucible for inductive melting or superheating
AssigneeALD Vacuum Technologies GmbH
InventorsFranz Hugo, Thomas Ruppel, Hans-Gunther Fellmann
Life of this patent
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AssigneeALD Vacuum Technologies GmbH
InventorsFranz Hugo, Thomas Ruppel, Hans-Gunther Fellmann
Estimating the term…
A sealed evacuatable crucible (1) for inductive melting of metals or other electrically conductive materials, including a plurality of palisades (2,2', . . . ) which are arranged parallel to one another, and for enclosing the melt and forming the crucible wall, and having a crucible base part (3) which carries the palisades (2,2', . . . ), and having an induction coil (18) which is wound around the palisades (2,2', . . . ) from outside in direct manner distanced therefrom, and through which there flows an alternating current and which is movable in a vertical direction relative to the crucible (1), and having in the crucible base part (3) a discharge opening (25) which is closable by means of a stopper rod (13), there is provided below the crucible base part (3) an evacuatable chamber (10) which is formed of two parts (11, 12,) for receiving a vessel (14) for collecting the molten charge, which is placed below the discharge opening (25), wherein the lower chamber part (12) rests on the transporting surface of a lift-truck (16) and is movable therefrom towards the upper chamber part (11).
A sealed evacuatable crucible for inductive melting or superheating of electrically conductive materials, comprising a plurality of palisades which are arranged vertically and parallel to one another and distributed on an arc of a circle and distanced from one another, and for enclosing a melt to form the crucible wall, having a disk-shaped crucible base part which carries the said palisades wherein the palisades are provided at least in part with voids through which a cooling medium flows, and having an induction coil which is wound around the palisades from outside in direct manner distanced therefrom, and through which there flows an alternating current and which is movable in a vertical direction relative to the crucible and having in the crucible base part a discharge opening which is closable by means of a stopper rod, and having, provided below the crucible base part and connected in pressure-proof manner therewith, an evacuatable chamber which is formed of an upper chamber part and a lower chamber part for receiving a vessel for collecting the molten charge, which is placed below the discharge opening, and having an arm for holding and guiding the stopper rod, which is positioned movably on the upper chamber part.
Dependencies are inferred from the claim text.