Exothermic compositions

Details Exothermic compositions Exothermic compositions

1988-04-25

1993-01-19

Schofer, Joseph L.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

523143, 524430, 524433, C21D 700, C21D 318

Patent

active

051807599

ABSTRACT:
An exothermic composition comprises a particulate readily oxidizable metal such as aluminum, magnesium or silicon and an organic fluorine-containing compound, and usually an oxidizing agent for the readily oxidizable metal. The preferred organic fluorine-containing compound is polytetrafluoroethylene. The composition may also contain a binder, a particulate refractory material, refractory fibres and/or organic fibres. The composition may be used in the casting of molten metal, either in particulate form or as a preformed shape such as a sleeve or board, to cover or surround molten metal in the feeder of a casting mould or in the head or head box of an ingot mould.

REFERENCES:
patent: 3635877 (1972-01-01), Van Wyk
patent: 4031046 (1977-06-01), Tisza

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