B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
22/124, 22/186
B22D 15/04 (2006.01) B22C 9/24 (2006.01) B22D 27/04 (2006.01)
Patent
CA 1224325
METHOD AND APPARATUS FOR THE MANUFACTURE OF A THICK-WALLED HOLLOW CASTING OF CAST IRON ABSTRACT OF THE DISCLOSURE A method of manufacturing a thick-walled container casting of a cast iron with a spheroidal graphite comprises forming an inflexible mold spaced between an inner cylindrical dead mold core and an outer mold arranged over the dead mold core, filling the mold space through a gate from an end thereof while cooling particularly the inner mold surface of the mold adjacent the dead mold over the amount of a cooling of a usual sand casting, and dimensioning the gate so that the cast iron solidifies in the gate before the eutectic solidification of the casting sets in. The device comprises an inner cylindrical dead bolt core which has a bottom end and a closed top end and an outer cylindrical mold positioned over the inner core with its top spaced from the top end of the inner dead mold core. The bottom open ends of the inner and outer cylindrical molds are closed by means which define a mold filling closure having a gate dimensioned so that the filling of the mold will effect first the solidification in the gates.
402873
Derp Helmut
Keese Horst
Schlich Elmar
Macrae & Co.
Thyssen Industrie Ag
Transnuklear Gmbh
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