Centrifugal casting apparatus for casting a flanged roll and method of casting

Claim 1

APPARATUS FOR CENTRIFUGALLY CASTING A TUBULAR MEMBER HAVING AN INTERNAL FLANGE THEREIN, COMPRISING A TUBULAR MOLD MOUNTED FOR ROTATION, PARTITION MEANS SEPARATING THE INTERIOR OF THE MOLD INTO PRESSURE AND FLANGE CHAMBERS, SAID PARTITION MEANS HAVING AN OUTER DIAMETER SMALLER THAN THE INNER DIAMETER OF SAID MOLD TO PROVIDE A PASSAGE INTERCONNECTING SAID CHAMBERS, MEANS DEFINING AN OPENING IN SAID MOLD THROUGH WHICH A PREDETERMINED VOLUME OF A MOLTEN MATERIAL CAN BE SUPPLIED TO SAID CHAMBERS, DRIVE MEANS FOR ROTATING SAID MOLD AT A SPEED SUFFICIENT TO CAUSE THE MOLTEN MATERIAL TO BE DISTRIBUTED EVENLY OVER SAID INNER SURFACE OF SAID MOLD, AND MEANS FOR CREATING AND MAINTAINING A PRESSURE DIFFERENTIAL BETWEEN SAID CHAMBERS TO CAUSE A PREDETERMINED PORTION OF THE MOLTEN MATERIAL TO FLOW FROM SAID PRESSURE CHAMBER THROUGH SAID PASSAGE INTO SAID FLANGE CHAMBER SO THAT THE MATERIAL IN SAID FLANGE CHAMBER FORMS AN INTEGRAL INTERNAL FLANGE ON THE TUBULAR MEMBER WHEN THE MATERIAL SOLIDIFIES.