B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
22/183, 22/188,
B22D 18/04 (2006.01) B22D 1/00 (2006.01) B22D 2/00 (2006.01) B22D 18/06 (2006.01) B22D 27/00 (2006.01) B22D 27/20 (2006.01)
Patent
CA 2030496
DIFFERENTIAL PRESSURE, COUNTERGRAVITY CASTING WITH SELECTIVE ALLOYANT INTRODUCTION Abstract Of The Disclosure A source of alloyant is disposed at (i.e., within or in close proximity to) one or more ingates of a casting mold so as to selectively introduce the alloyant into the melt stream drawn upwardly from a casting vessel through the ingate(s) during the differential pressure, countergravity casting process. Castings having different compositions, microstructures and mechanical properties can thereby be produced from a common base melt in the casting vessel.
General Motors Corporation
Macrae & Co.
Sabraw Richard J.
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