Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1997-03-03
1998-10-13
Lin, Kuang Y.
Metal founding
Process
Shaping liquid metal against a forming surface
164136, 164258, 164493, B22D 2715, B22D 3504
Patent
active
058198377
ABSTRACT:
Metal is melted in an induction-heated crucible (13) on which a mold (10) with a downward-facing filling opening (26) is located in the melting position. After melting the metal, the crucible (13) and the mold (10) are jointly rotated about a horizontal axis (A--A) into a tilting position in which the molten material flows from the crucible (13) into the mold (10). In order to melt reactive metals, melting is done in a crucible (13) that is surrounded by a vacuum, this crucible being surrounded by an induction coil (15) outside of the vacuum. The mold (10) is located in a vacuum-sealed casting chamber (6) which is evacuated together with the crucible (13) prior to melting and casting is carried out by a joint tilting of the crucible (13), casting chamber (6) and mold (10) by at least 180 degrees while the vacuum is maintained.
REFERENCES:
patent: 2787536 (1957-04-01), Spedding et al.
patent: 3977462 (1976-08-01), Ohara
patent: 4580617 (1986-04-01), Blechner et al.
Kreutzer, "Induktiv beheizter Vakuum-Bruckguss Eine zukunftsichere Gusstechnik", Dental-labor, XXXIV, Heft Dec. 1986 1927-1929.
Abramson Robert Y.
Huber Jakob
Hugo Franz
Sheehan John
Ald Vacuum Technologies GmbH
Lin Kuang Y.
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