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:
Sep. 08, 1987
Filed:
Mar. 05, 1987
Toshiba Ceramics Co., Ltd., , JP;
Abstract
An immersion nozzle for continuous casting includes a nozzle body and a conduit extending longitudinally through the nozzle body. At least a portion of the interior surface of the nozzle which surrounds the conduit is made of a refractory material including 40-92 wt. % ZrO.sub.2, 5-40 wt. % C and 3-20 wt. % of an oxide admixture of (1) RO and RO.sub.2, wherein RO is at least one member selected from the group consisting of CaO, MgO and MnO; and RO.sub.2 is at least one member selected from the group consisting of SiO.sub.2 and TiO.sub.2 ; or (2) RO, RO.sub.2 and R.sub.2 O.sub.3 wherein RO and RO.sub.2 are as defined above and R.sub.2 O.sub.3 is at least one member selected from the group consisting of Al.sub.2 O.sub.3 and Cr.sub.2 O.sub.3.