Riser sleeves

Details Riser sleeves Riser sleeves

B - Operations, Transporting

22

D

22/135

B22D 45/00 (2006.01)

Patent

CA 1168830

A B S T R A C T A riser sleeve is closed at one end into a dome form and the dome's outer surface includes a flattened portion. An elongate member, forming a Williams core, extends from the outside of the sleeve below the flattened portion to a point within the sleeve which is surrounded by molten metal when the sleeve is in use. The sleeve and the Williams core are integrally formed of an air-permeable material so that in use atmospheric pressure acts on molten metal contained in the riser.

352155

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