Nozzle for making steel and method for manufacturing the same

Details Nozzle for making steel and method for manufacturing the same Nozzle for making steel and method for manufacturing the same

1997-09-05

2000-02-08

Kastler, Scott

Dispensing

Molten metal dispensing

With subjacent flow guide

501103, B22D 3500

Patent

active

060219297

ABSTRACT:
A funnel shaped nozzle and a method for manufacturing the same, in which the nozzle is easily manufactured at a low cost, reduced in destabilization of a base material and has a high corrosion resistance. In carrying out the invention, a baked nozzle mainly composed of completely, or partially-stabilized zirconia, is impregnated with a solution that allows unstabilized zirconia to be precipitated or separated by heat. By heating the nozzle and coating an open surface of a component particle of base material with unstabilized zirconia, a nozzle reduced in destabilization of a base material and having a high corrosion resistance is obtained. As it is not required to produce a two-layered molding, production is facilitated, and a manufacturing cost is reduced, because a small amount of unstabilized zirconia is used.

REFERENCES:
patent: 4360598 (1982-11-01), Otagiri et al.
patent: 5073689 (1991-12-01), Tabata et al.
Abstract of Japanese Patent JP403198841A Masaaki et al, Aug. 1991.
Abstract of Japanese Patent JP402263762A Itaru et al, Oct. 1990.

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