Alusuisse Technology & Management Ltd.

Erich Rollin

Jean-Pierre Gabathuler

Hansjorg Huber

Holding device for inductive heating of billets of metal alloys having thixotropic properties, and for holding and transporting the billets until casting. The holding device is a dish and the dish exhibits a body in the shape of a tub and a wall at each end, at least the body being out of a high melting point metal, for example steel.

Device for holding billets

Process for manufacturing shaped parts out of thixotropic metal billets in horizontal pressure diecasting machines such that inclusions of oxide skin surrounding the thixotropic metal billet are avoided in the alloy structure of the shaped part. Before introducing the thixotropic metal alloy into the space inside the mould, the oxide skin surrounding the metal billet is removed completely and collected in a container such that removal of oxide-free, homogeneous thixotropic metal alloy is minimized by taking into account the thermal and mechanical properties of the thixotropic billet, which are asymmetric with respect to the longitudinal axis of the metal billet. The removal of the oxide skin takes place in a horizontal diecasting machine which contains an oxide remover between the casting chamber and the mold. The oxide remover is represented by a ring-shaped body with a horizontal concentric middle axis and a throughput opening. The oxide remover contains a ring-shaped recess, the oxide deposit ring which is connected to the throughput opening of the oxide remover via a concentric, ring-shaped oxide remover opening, the cross-section of the oxide remover opening being asymmetric with respect to the concentric middle axis of the oxide remover (30).

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Neuhausen am Rheinfall, Switzerland

Erich Rollin