Melting crucible and method

A method of melting and pouring a metallic charge, comprising positioning a metallic charge in a disposable refractory liner body residing in a refractory host crucible, melting the metallic charge in said liner body, pouring the melted metallic charge from said liner body, removing said liner body from said host crucible, and placing a clean, new refractory liner body to melt the next metallic charge.

The method of claim 6 wherein the metallic charge comprising a nickel base superalloy or cobalt base superalloy is melted in a melting chamber section in said liner body.

The assembly of claim 6 including an induction coil about the host crucible.

The assembly of claim 6 wherein said host crucible resides in a bed of refractory grog particulates.

The method of claim 6 wherein said metallic charge is melted by energizing an induction coil disposed about the host crucible.

The assembly of claim 6 wherein said liner body is received in said host crucible with clearance that allows said liner body to be removed from said host crucible after said metallic charge has been melted and poured.

The method of claim 6 wherein the melted metallic charge is poured into a mold.

The assembly of claim 6 wherein said liner body has a cylindrical tubular shape.

A melting crucible assembly comprising a refractory host crucible, and a disposable, self-supporting refractory liner body disposed in the host crucible and in which a metallic charge is melted, said liner body including a partition wall that forms a melting chamber section and a pouring chamber section communicated to one another at a location disposed below a melt level of a melted metallic charge in said liner body such that melted metallic charge below said level flows from the melting chamber section to the pouring chamber section when said crucible assembly is tilted.

The assembly of claim 6 wherein said partition wall extends downwardly in said liner body when it is oriented in an upstanding position.

The assembly of claim 6 wherein said partition wall is configured to form a recess along a side thereof facing said melting chamber section.

The assembly of claim 6 wherein said liner body includes a cover that is connected to the uppermost end of said partition wall, said cover including an opening through which melted metallic charge in said pouring chamber section is poured when said crucible assembly is tilted.

The combination of a melting vessel in a chamber having a vacuum or a protective atmosphere therein, comprising a disposable, self-supporting refractory vessel in which a metallic charge comprising a nickel base superalloy or cobalt base superalloy is melted, said vessel including a partition wall that forms a melting chamber section and a pouring chamber section communicated to one another at a location disposed below a melt level of melted metallic charge in said vessel such that melted metallic charge below said level flows from the melting chamber section to the pouring chamber section when said vessel is tilted.