Metal founding – Process – Shaping liquid metal against a forming surface
Patent
1986-03-19
1991-10-22
Lin, Kuang Y.
Metal founding
Process
Shaping liquid metal against a forming surface
164126, 164348, 164354, 249135, 249175, B22D 2704
Patent
active
050586556
ABSTRACT:
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 ajacent 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.
REFERENCES:
patent: 4269258 (1981-05-01), Sonntag et al.
patent: 4278124 (1981-07-01), Aso et al.
Derp Helmut
Keese Horst
Schlich Elmar
Lin Kuang Y.
Thyssen Industrie AG
Transnuklear GmbH
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