Refractory shape having an external layer capable of forming a l

Details Refractory shape having an external layer capable of forming a l Refractory shape having an external layer capable of forming a l

1995-06-15

1997-11-25

Turner, Archene

Stock material or miscellaneous articles

Self-sustaining carbon mass or layer with impregnant or...

501 99, 501100, 222591, 222600, 222601, 222606, 222607, 428688, 428689, 428698, 428701, 428702, 428446, B22D 1110

Patent

active

056910614

ABSTRACT:
The invention concerns a component for the pouring of steel that has a body (2) of a refractory material containing carbon. It has a layer (10) that covers the body partially or completely and is capable of forming a surface layer (10a) that is oxidized and densified and is impermeable to gases when it is brought to a temperature above 1000.degree. C. The layer (10) is comprised of a refractory material containing sintering precursors chosen in the group consisting of calcined alumina, reactive calcined alumina, silica fumes and clays.

REFERENCES:
patent: 4108675 (1978-08-01), Tomita
patent: 4210264 (1980-07-01), Kondo
patent: 4676412 (1987-06-01), Tsuchinari
patent: 5086957 (1992-02-01), Ozeki
patent: 5198126 (1993-03-01), Lee
patent: 5335833 (1994-08-01), Rancoule
patent: 5348203 (1994-09-01), Andoh
patent: 5370370 (1994-12-01), Benson

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