Levitation melting method using an annular element
AssigneeALD Vacuum Technologies GmbH
InventorsSergejs Spitans, Henrik Franz, Bjoern Sehring
Life of this patent
Estimating the term…
Abstract
The invention relates to a levitation melting process and an apparatus for producing castings comprising a ring-shaped element of a conductive material for introducing the casting of a molten batch into a casting mould. In the process, the ring-shaped element is introduced into the region of the alternating electromagnetic field between the induction coils in order to cast the molten batch, thereby initiating a targeted run-off of the melt into the casting mould by influencing the induced magnetic field.
Claims15
A method for producing cast bodies from an electrically conductive material by a levitation melting method, wherein alternating electromagnetic fields levitate a batch, the alternating electromagnetic fields being generated with at least one pair of opposing induction coils with a core of a ferromagnetic material, comprising:
- introducing a batch of a starting material into a sphere of influence of at least one alternating electromagnetic field so that the batch is kept in a levitating state;
- melting the batch;
- positioning a casting mold in a filling area below the levitating batch;
- casting the entire batch into the casting mold by introducing a ring-shaped element of an electrically conductive material into the region of the electromagnetic alternating field between the induction coils;
- removing a solidified cast body from the casting mold.
An apparatus for levitation melting an electrically conductive material, comprising at least one pair of opposing induction coils with a core of a ferromagnetic material for levitating a batch by means of alternating electromagnetic fields and a ring-shaped member of electrically conductive material insertable in the region of the alternating electromagnetic field between the induction coils.
A ring-shaped element consisting of an electrically conductive material and forming part of a casting mold in a levitation melting process for casting a batch into the casting mold by introducing into the region between induction coils that generate an alternating electromagnetic field levitating the batch.
Dependencies are inferred from the claim text.