The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 18, 1981
Filed:
Dec. 05, 1979
Nippon Kokan Kabushiki Kaisha, Tokyo, JP;
Abstract
A method for automatic pouring of molten metal from a ladle into a tundish through the use of a rotary nozzle, wherein the pouring operation between a ladle and a tundish in continuous casting of metal is effected by a rotary nozzle, and a plurality of pouring nozzles having different diameters are mounted on the rotary nozzle, whereby the pouring nozzles are used alternately by 100% fully opening and closing the same. The plurality of pouring nozzles with different diameters include at least a pouring nozzle whose pouring rate for wide open pouring is greater than that required to maintain the level of the molten metal in the tundish at a predetermined reference level and another pouring nozzle whose pouring rate for wide open pouring is less than that required to maintain the predetermined reference level.