Metal founding – Means to shape metallic material – Continuous or semicontinuous casting
Patent
1988-05-26
1989-08-01
Seidel, Richard K.
Metal founding
Means to shape metallic material
Continuous or semicontinuous casting
164337, 222591, B22D 1110
Patent
active
048526339
ABSTRACT:
An immersion nozzle for continuous casting of steel comprises an immersion nozzle body for introducing molten steel supplied form a tundish into a continuous casting mold, the immersion nozzle body having two exit ports located symmetrically about a vertical center axis of the immersion nozzle body at a lower portion thereof and being immersed in the molten steel in the mold. The immersion nozzle body has a bore which includes first and second sectional areas, the first sectional area being at and below the two exit ports and being smaller than the second sectional area, the second sectional area being above the two exit ports, and the molten steel passing through the bore and out through the two exit ports. The bore has an inner diameter at the level of the two exit ports which is substantially equal to a horizontal inner length or diameter of the two exit ports. A ratio represented by (A)/(B) is from 0.5 to 0.8, where (A) is the area of the first sectional area and (B) is the area of the second sectional area.
REFERENCES:
patent: 4210264 (1980-07-01), Kondo
Kitagawa Tooru
Masaoka Toshio
Mori Takashi
Okimoto Kazutaka
Suzuki Mikio
NKK Corporation
Seidel Richard K.
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