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:
Oct. 08, 2002
Filed:
Aug. 07, 2000
Applicant:
Inventors:
Assignee:
Shinagawa Refractories Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C21C 7/076 ;
U.S. Cl.
CPC ...
C21C 7/076 ;
Abstract
An object of the present invention is to provide a mold powder for continuous casting of steel whose fluorine content is small, and which enables stable casting, for reducing the corrosion of continuous casting equipment and decreasing the concentration of fluorine in the waste water, well as a method for continuous casting of steel using mold powder. The mold powder for continuous casting of steel of the present invention is characterized by having a chemical composition including 25 to 70 wt % of SiO , 10 to 50 wt % of CaO, not more than 20 wt % of MgO, and 0 to 2 wt % of F as an unavoidable impurity, where the viscosity of the molten mold powder is not less than 4 poise at 1,300° C.