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. 10, 2019
Filed:
Jan. 22, 2016
Jfe Steel Corporation, Tokyo, JP;
Keigo Toishi, Chiba, JP;
Hiroyuki Ohno, Chiba, JP;
Norichika Aramaki, Fukuyama, JP;
Yuji Miki, Chiba, JP;
JFE STEEL CORPORATION, Tokyo, JP;
Abstract
Provided is a continuous casting method of steel that prevents a solidification completion position from being changed even when a drawing speed V of a cast slab is changed. The method includes drawing a cast slab by setting a drawing speed Vwhile spraying cooling water to the cast slab at a cooling water spray amount W[kg/ton-cast slab]. Then, changing the drawing speed to the speed Vwhile spraying cooling water to the cast slab at a cooling water spray amount W[kg/ton-cast slab]. The method further includes spraying cooling water to the cast slab at a cooling water spray amount Wt [kg/ton-cast slab] during a period of time t that is obtained by dividing a target length Lt by the drawing speed V. The water spray amount Wt satisfying either formula (1): Wt<Wunder a condition of V<V, or formula (2): Wt>Wunder a condition of V>V