Replaceable liner for a crucible
AssigneeStackpole Limited
InventorsWilliam A. Nystrom, Leo C. Lanzel, William A. Bauer
Life of this patent
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Abstract
A replaceable liner for a crucible for molten metal consists of an open-top receptacle having at least its side wall made of graphite foil formed earlier by compressing expanded graphite.
Claims6
A replaceable liner for a crucible for molten metal, the liner consisting of an open-top receptacle having at least its side wall made of graphite foil preformed from compressed expanded graphite.
The method of making a replaceable liner for a crucible for molten metal, comprising providing a circular graphite foil blank formed from compressed expanded graphite with a plurality of circumferentially spaced slits extending from the edge of the disc radially inwardly a predetermined distance to form inwardly tapered pie-shape segments around a solid central circular area, centering the disc over a die cavity shaped like the desired liner, and pressing the disc down into the cavity to form a liner having a side wall formed from the laterally overlapping segments extending upwardly from a circular bottom wall.
Dependencies are inferred from the claim text.