Integral nozzle with gas delivery manifold

Details Integral nozzle with gas delivery manifold Integral nozzle with gas delivery manifold

1976-12-13

1978-08-22

Reeves, Robert B.

Dispensing

Molten metal dispensing

164437, 222603, B22D 4108

Patent

active

041083393

ABSTRACT:
The specification discloses a ceramic nozzle of the submersible type which includes a permeable bore section surrounded by an annular manifold positioned between the bore section and the less permeable integral body of the nozzle. The manifold is employed for supplying inert gas into the nozzle bore. The nozzle is made by positioning an unfired ceramic bore section on a mandrel inserted into a mold cavity defining the body of the nozzle with the outer surface of the bore section covered with a burnout material which, during the molding of the nozzle, fills the manifold area and after kiln firing burns away to leave a void defining the manifold. The ceramic mix for the bore section includes burnout material, such that after firing the bore section is significantly more permeable than the body of the nozzle.

REFERENCES:
patent: 3253307 (1966-03-01), Giriffiths et al.
patent: 3351688 (1967-11-01), Kingery et al.
patent: 3797712 (1974-03-01), Kutzer et al.
patent: 3838798 (1974-10-01), Voss
patent: 4011291 (1977-03-01), Curry
"A New Process for Continuously Casting Aluminum Killed Steel" Meadowcroft et al., Journal of Metals: Jun. 1971: pp. 11-17.

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