Title:
CALCIUM ADDING METHOD TO MOLTEN STEEL
Document Type and Number:
Japanese Patent JPS5358918
Kind Code:
A
Abstract:
PURPOSE: To improve the yield of Ca addition by increasing the press. inside a vacuum degassing vessel to a level within a range where the reflux of molten steel or the suction and exhaust of gas under reduced press. are not stopped and then adding Ca.
Inventors:
ISHIKURA KATSUHIKO
NOBUMOTO AKIRA
NOBUMOTO AKIRA
Application Number:
JP13488476A
Publication Date:
May 27, 1978
Filing Date:
November 10, 1976
Export Citation:
Assignee:
NIPPON STEEL CORP
International Classes:
C21C7/10; (IPC1-7): C21C7/02