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1. (WO1992009387) PROCESS FOR CONTINUOUS CASTING OF ULTRALOW-CARBON ALUMINUM-KILLED STEEL
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1992/009387 International Application No.: PCT/JP1991/001625
Publication Date: 11.06.1992 International Filing Date: 27.11.1991
IPC:
B22D 11/10 (2006.01)
B PERFORMING OPERATIONS; TRANSPORTING
22
CASTING; POWDER METALLURGY
D
CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
11
Continuous casting of metals, i.e. casting in indefinite lengths
10
Supplying or treating molten metal
Applicants:
KAWASAKI STEEL CORPORATION [JP/JP]; 1-28, Kitahonmachi-dori 1-chome, Chuo-ku Kobe-shi Hyogo-ken 651, JP (AllExceptUS)
BESSHO, Nagayasu [JP/JP]; JP (UsOnly)
YAMAZAKI, Hisao [JP/JP]; JP (UsOnly)
FUJII, Tetsuya [JP/JP]; JP (UsOnly)
Inventors:
BESSHO, Nagayasu; JP
YAMAZAKI, Hisao; JP
FUJII, Tetsuya; JP
Agent:
KOSUGI, Yoshio ; Broderie Nishi-shinbashi Bldg. 7F 9-1, Nishi-shinbashi 1-chome Minato-ku Tokyo 105, JP
Priority Data:
2/32269328.11.1990JP
Title (EN) PROCESS FOR CONTINUOUS CASTING OF ULTRALOW-CARBON ALUMINUM-KILLED STEEL
(FR) PROCEDE DE COULAGE CONTINU D'ACIER CALME A L'ALUMINIUM, A TENEUR ULTRA FAIBLE EN CARBONE
Abstract:
(EN) A process for the continuous casting of ultralow-carbon aluminum-killed steel, wherein rusting can be prevented by conducting the casting under such a condition that the concentration of calcium is 6 to 20 ppm by weight, that of sulfur is 0.010 wt% or less, that of oxygen is 30 ppm by weight or less, the degree of superheating of molten steel in a tundish is 16 °C or above, and the average flow rate of molten steel in the straight barrel portion of a nozzle is 1.2 m/sec or above. Also the swelling of cold rolled steel sheet can be prevented, because it is unnecessary to blow gaas into an immersion nozzle.
(FR) Procédé de coulage en continu d'acier calmé à l'aluminium à teneur ultra faible en carbone dans lequel on peut empêcher la rouille en procédant au coulage dans des conditions telles que la concentration en calcium est comprise entre 20 et 26 ppm en poids, celle du soufre représente 0,010 % en poids au moins, celle de l'oxygène représente 30 ppm en poids ou moins, le degré de surchauffe de l'acier en fusion dans un panier de coulée est de 16 °C ou plus, et le débit moyen d'acier en fusion dans la partie cylindrique droite d'une busette est de 1,2 m/ss ou plus. De plus, on peut empêcher le gonflement d'une tôle d'acier laminée à froid puisqu'il n'est pas nécessaire d'injecter du gaz dans une busette d'immersion.
Designated States: CA, JP, KR, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)
Also published as:
EP0512118US5297614JP2928382CA2074371KR1019920703244