Refractory discharge device with separate external reinforcement

Details Refractory discharge device with separate external reinforcement Refractory discharge device with separate external reinforcement

1991-02-07

1992-03-03

Kastler, S.

Dispensing

Molten metal dispensing

With subjacent flow guide

222606, B22D 3500

Patent

active

050925008

ABSTRACT:
A refractory discharge device includes an immersion nozzle formed substantially of carbon-bonded magnesium oxide or carbon-bonded aluminum oxide or fused quartz. The immersion nozzle has therethrough a discharge passage and has an outer surface and an outlet end. An external reinforcement member is formed entirely separately from the immersion nozzle from a zirconium oxide material that is directly bonded without any carbon and by burning at a high temperature. The external reinforcement member is attached to the outer surface of the outer surface of the immersion nozzle at a position such that during use the external reinforcement member will extend above and below a casting powder covering of molten metal into which the refractory discharge device will be immersed.

REFERENCES:
patent: 4423833 (1984-01-01), Richter
patent: 4640447 (1987-02-01), Geller et al.
patent: 4858794 (1989-08-01), Sugiura et al.

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