Fluoride-type with heat sink for casting molten reactive and ref

Details Fluoride-type with heat sink for casting molten reactive and ref Fluoride-type with heat sink for casting molten reactive and ref

1975-08-01

1977-12-20

Hayes, Lorenzo B.

Compositions: coating or plastic

Coating or plastic compositions

Molds and mold coating compositions

106 3827, 106 389, 164 23, B28B 734

Patent

active

040639541

ABSTRACT:
A mold for casting molten reactive and refractory metals has a facing portion comprising finely divided particles of the fluorides and oxyfluorides of the metals of Groups, Ia, IIa, and IIIa, including the lanthanide and actinide series, of the Periodic Chart (after Mendeleeff) and a back-up portion comprising finely divided particles of shell mold back-up material. The fluoride and oxyfluoride content of the facing portion is essentially inert to titanium and other reactive and refractory molten metals and hence minimizes contamination by mold degradation products of metal objects cast in the mold. SP

REFERENCES:
patent: 2912729 (1959-11-01), Webb
patent: 3164872 (1965-01-01), Greenwald
patent: 3537949 (1970-11-01), Brown et al.
patent: 3854961 (1974-12-01), Flasch

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