Method and apparatus for casting metal alloys in the thixotropic state
AssigneeAssociation pour la Recherche et le Developpemente des Methods et Processus Industrieles (Armines)
InventorJean Collot
Life of this patent
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Abstract
Equipment (3) for centrifugal casting from a crucible (5) into a mold (8) is modified by the addition of agitation means (19) movable relative to the crucible (5) and a heating furnace (30) which is movable relative to the mold (8) in order to heat the latter, before casting, to a temperature close to that of the alloy in the thixotropic state.
Claims13
A method of casting a metal alloy in a thixotropic state, said method comprising the steps of agitating said alloy in a crucible to render said alloy thixotropic, and then transferring said thixotropic alloy from said crucible directly into a mold by virtue of centrifugal force produced by rotating said crucible and said mold.
Apparatus for implementing a method of casting a metal alloy in a thixotropic state wherein said alloy is rendered thixotropic in a crucible and then transferred from said crucible into a mold by virtue of centrifugal force produced by rotating said crucible and said mold, said apparatus comprising a centrifugal casting machine incorporating a crucible, a crucible rotating means, a mold coupleable to said crucible during said rotation in order to transfer said alloy directly from said crucible into said mold, and means for agitating the contents of said crucible when molten.
A method of casting a metal alloy in a thixotropic state, said method comprising:
- subjecting said alloy in a crucible to agitation to produce a thixotropic alloy;
- ceasing said agitation;
- and
- rotating said crucible and a mold to transfer said thixotropic allow directly from said crucible into said mold by centrifugal force.
Apparatus for casting a metal alloy in a thixotropic state, said apparatus comprising a centrifugal casting machine including:
- a crucible;
- a crucible rotating means;
- a mold coupleable to said crucible during rotation of said crucible and said mold to transfer said alloy directly from said crucible to said mold;
- means for agitating the contents of said crucible when molten;
- and
- means for ceasing agitation of the contents of said crucible prior to transferring said alloy directly from said crucible to said mold.
Dependencies are inferred from the claim text.