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:
May. 08, 1990
Filed:
Oct. 24, 1988
Yasutsugu Ogura, Tokyo, JP;
Ryuichi Maeda, Tokyo, JP;
NKK Corporation, Tokyo, JP;
Abstract
An apparatus for pouring molten steel into a mold in continuous casting of steel according to the present invention comprises a tundish holding molten steel; a nozzle which is set at the bottom of said tundish, the nozzle having a spherical shape and through which molten steel flows out of said tundish; a sliding plate which is set at the lower portion of said nozzle and which opens and closes said nozzle; an immersion nozzle which is set under said sliding plate and through which molten steel is poured into the mold; and a block body which has a core body therein, whose outer layer is made from refractory material and has a spherical surface large enough to cover the opening of said nozzle and whose bulk specific gravity ranges between the bulk specific gravity of slag and that of molten steel. A disc-shaped flange is coupled to the spherical surface portion.