Liner for submerged entry nozzle

Details Liner for submerged entry nozzle Liner for submerged entry nozzle

1993-02-19

1994-12-06

Kastler, Scott

Metallurgical apparatus

Means for melting or vaporizing metal or treating liquefied...

With means to discharge molten material

266280, 222590, 222606, 222607, 501100, B22D 4154

Patent

active

053703707

ABSTRACT:
A fired carbon-bonded, oxide refractory body for use in casting aluminum-killed steel has a metal contacting surface which is resistant to both steel erosion and buildup of alumina. The layer is formed by first firing the pressed body in an oxidizing atmosphere to form a porous oxidized zone on selected steel contacting surfaces. The remaining surface portions of the body are protected against oxidation during firing by a glaze applied prior to firing. A carbon free refractory slip or slurry is infiltrated into the porous oxidized zone to create the erosion and buildup resistant surface layer. A preferred infiltrant material is alumina.

REFERENCES:
patent: 4870037 (1989-09-01), Hoggard et al.
patent: 4913408 (1990-04-01), Hoggard et al.
patent: 4953762 (1990-09-01), Villani
patent: 4989762 (1991-02-01), Ando et al.
patent: 5083687 (1992-01-01), Saito et al.
patent: 5188989 (1993-02-01), Winkelbauer et al.
patent: 5198126 (1993-03-01), Lee

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