Oxyfluoride-type mold for casting molten reactive and refractory

Details Oxyfluoride-type mold for casting molten reactive and refractory Oxyfluoride-type mold for casting molten reactive and refractory

1975-08-01

1977-11-08

Hayes, Lorenzo B.

Compositions: coating or plastic

Coating or plastic compositions

Molds and mold coating compositions

106 3835, 106 389, 164 24, 164 26, B28B 734

Patent

active

040574334

ABSTRACT:
A mold for casting molten reactive and refractory metals has a facing portion comprising finely divided particles of the oxyfluorides of the metals of Group 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 oxyfluroide 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.

REFERENCES:
patent: 3537949 (1970-11-01), Brown et al.

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