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:
Jun. 11, 2019
Filed:
Sep. 11, 2014
Applicant:
Nippon Steel & Sumitomo Metal Corporation, Tokyo, JP;
Inventor:
Masahito Hanao, Kashima, JP;
Assignee:
NIPPON STEEL & SUMITOMO METAL CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B22D 11/00 (2006.01); C03C 10/00 (2006.01); B22D 11/108 (2006.01); B22D 11/111 (2006.01); C22C 38/00 (2006.01); C22C 38/02 (2006.01); C22C 38/04 (2006.01); C22C 38/06 (2006.01); C22C 38/12 (2006.01); C22C 38/14 (2006.01); B22D 11/049 (2006.01);
U.S. Cl.
CPC ...
B22D 11/108 (2013.01); B22D 11/001 (2013.01); B22D 11/049 (2013.01); B22D 11/111 (2013.01); C03C 10/00 (2013.01); C22C 38/002 (2013.01); C22C 38/02 (2013.01); C22C 38/04 (2013.01); C22C 38/06 (2013.01); C22C 38/12 (2013.01); C22C 38/14 (2013.01); C03C 2204/00 (2013.01);
Abstract
Provided is mold flux that can prevent longitudinal cracks from forming on a surface of a slab upon continuous-casting hypo-peritectic steel, wherein CaO, SiO, an alkali metal oxide and a fluorine compound are contained, 1.1≤(CaO)/(SiO)≤1.9, 0.10≤(CaF)/((CaO)+(SiO)+(CaF))≤0.40 and 0≤(alkali metal fluoride)/((CaO)+(SiO)+(alkali metal fluoride))≤0.10 are satisfied, a solidification temperature is no less than 1300° C., and viscosity at 1450° C. is no more than 0.1 Pa·s.