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US 5,735,334 AGranted
Casting of light metal alloys
AssigneeAlloy Technologies Limited
InventorsThomas Leonard Sutton, John Campbell, Michael Joseph Flynn, Gary McBain
Life of this patent
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Abstract
Light alloy metal products are cast by introducing the molten metal into a sand mold having a vertical parting line, characterized in that the mold is bottom filled.
Claims20
A method of casting light alloy metal products, comprising the steps of:
- introducing molten light alloy metal into a series of continuously produced contiguous sand moulds, each sand mould having a vertical parting line, an inlet and a cavity, by bottom filling the mould inlets and cavities sequentially in a manner permitting control of flow velocity and pressure, and
- advancing the moulds in unison after each introducing step and before complete solidification of the metal introduced into a mould inlet in that introducing step.
A casting apparatus comprising
- means for producing a series of contiguous sand moulds, each sand mould having a vertical parting line, a cavity and an inlet;
- means for bottom filling the mould inlets and cavities sequentially with molten metal in a manner permitting control of flow velocity and pressure;
- and
- means for advancing the moulds in unison after each filling operation and before complete solidification of the metal introduced into a mould inlet in that operation.
1 more element
Dependencies are inferred from the claim text.