B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
B22D 11/10 (2006.01) B22D 18/04 (2006.01) B22D 27/08 (2006.01)
Patent
CA 2085032
FMC 0275 PUS -20- 88-078 Abstract A method and apparatus for making a metal- lurgically improved metal casting (10) with increased productivity, wherein molten metal is quiescently fed upwards into a molding chamber (14) which is then inverted. The disclosed system uses an assembly of refractory cores (12) that define the molding chamber (14) with riser channels (16). A metal entrance (18) to the molding chamber (14) through a mold side wall (20) requires feeding molten metal against gravity to fill the molding chamber (14), and quiescently pres- sure feeding molten metal through a metal launder (26) to fill the molding chamber (14) and the riser chan- nels (16). A mold/nozzle connection between the metal launder (26) and the source of molten metal delivered under pressure is rotationally flexible and axially compliant. The feeding of molten metal is interrupted and the assembly is rotated about an axis passing through the mold/nozzle connection (28) to invert the assembly while maintaining the mold/nozzle connection. The mold/nozzle connection (28) is then severed from the inverted assembly. Molten metal is then allowed to feed under gravity into the molding chamber (14) from the riser channels 16 and the metal launder (26) is drained. Meanwhile, the molding chamber (14) is removed from the mold/nozzle connection (28), and a subsequent mold is filled.
Seaton Gregory W.
Seaton William W.
Ford Motor Company Of Canada Limited
Sim & Mcburney
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