ELECTROMAGNETIC CASTING SYSTEM AND METHOD INCLUDING FURNACES AND MOLDS FOR PRODUCING SILICON TUBES

A furnace for electromagnetic casting a tubular-shaped silicon ingot is provided. The furnace includes a mold, outer and inner induction coils and a support member. The mold includes an outer crucible and an inner crucible. The outer crucible is annular-shaped. The inner crucible is disposed in the...

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Bibliographische Detailangaben
Hauptverfasser:	NITHIANANTHAN, Vijay, PEIDOUS, Igor
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUSPOLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE APPARATUS THEREFOR CASTING CASTING OF METALS CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES CHEMISTRY CRYSTAL GROWTH METALLURGY PERFORMING OPERATIONS POWDER METALLURGY PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE REFINING BY ZONE-MELTING OF MATERIAL SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITHDEFINED STRUCTURE SINGLE-CRYSTAL-GROWTH TRANSPORTING UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL ORUNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL
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Beschreibung
Zusammenfassung:	A furnace for electromagnetic casting a tubular-shaped silicon ingot is provided. The furnace includes a mold, outer and inner induction coils and a support member. The mold includes an outer crucible and an inner crucible. The outer crucible is annular-shaped. The inner crucible is disposed in the outer crucible and spaced away from the outer crucible to provide a gap between the inner crucible and the outer crucible. The mold is configured to receive granular silicon in the gap. The outer induction coil disposed around the outer crucible. The inner induction coil disposed in the inner crucible. The outer induction coil and the inner induction coil are configured to heat and melt the granular silicon in the mold to form a tubular-shaped silicon ingot. The support member is configured to hold and move a seed relative to the mold during formation of the tubular-shaped silicon ingot on the seed.