B - Operations – Transporting – 22 – C
Patent
B - Operations, Transporting
22
C
22/162, 22/172,
B22C 7/02 (2006.01) B22C 9/04 (2006.01) B22D 17/00 (2006.01) B22D 18/00 (2006.01) B22D 18/04 (2006.01) B22D 23/00 (2006.01) B22D 23/04 (2006.01) B22D 27/00 (2006.01) B22D 35/02 (2006.01)
Patent
CA 1267266
ABSTRACT "Casting of Metal Articles" A method of casting metal articles comprises feeding molten metal upwardly against the force of gravity from the source of molten metal into a mould cavity, the metal is permitted to solidify within the cavity then the feed of the metal is interrupted and the casting is removed from the cavity. The mould cavity is made by embedding an in situ detroyable pattern in particulate moulding material to form a mold cavity. The pattern may be destroyed in situ by the heat of the metal as it is fed into the mould cavity orby applying heat prior to feeding the metal into the cavity. The source of metal may be a reservoir located at a level below the level of the cavity with a pump to pump metal upwardly into the cavity through a riser tube. The metal to be cast may be supplied to the reservoir in molten state or in solid state and melted in the reservoir.
496516
Cosworth Research And Development Limited
Mccarthy Tetrault Llp
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