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:
Jan. 14, 2020
Filed:
Jan. 13, 2016
Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;
Toshiaki Mizoguchi, Kashima, JP;
Hiroaki Uchiyama, Tokai, JP;
Hideaki Sakurai, Kimitsu, JP;
Ryousuke Takata, Tokai, JP;
Shinji Nagai, Tomisato, JP;
Shuntaro Imai, Kisarazu, JP;
Daisuke Sakai, Tokai, JP;
NIPPON STEEL CORPORATION, Tokyo, JP;
Abstract
A continuous-cast slab is provided where central porosity is reduced by surly crushing the slab. A method and apparatus of manufacturing the slab is also provided. The continuous-cast slab having horizontally symmetrical granular equiaxed crystals at least in the center in the thickness direction includes a first reduction dent and a second reduction dent that further dents from the bottom surface of the first reduction dent and is narrower than the first reduction dent at least on one long side surface. Such a configuration can makes it possible to achieve the continuous-cast slab of no more than 2.5×10cm/g in a maximum porosity volume while segregation is reduced.