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. 11, 2011
Filed:
Oct. 27, 2010
Nobuhiro Okada, Amagasaki, JP;
Sei Hiraki, Kashima, JP;
Kouji Takatani, Kamisu, JP;
Akihiro Yamanaka, Kashima, JP;
Hidetoshi Suwa, Itako, JP;
Nobuhiro Okada, Amagasaki, JP;
Sei Hiraki, Kashima, JP;
Kouji Takatani, Kamisu, JP;
Akihiro Yamanaka, Kashima, JP;
Hidetoshi Suwa, Itako, JP;
Sumitomo Metal Industries, Ltd., Osaka, JP;
Abstract
Disclosed is a continuous casting in which an electromagnetic stirrer is installed upstream, in the casting direction, of the reduction rolling position of a slab, and in which a slab with a liquid core is reduced in thickness, wherein by imparting a collision flow forming-type stirring and a uni-directional alternating flow forming-type stirring, molten steel with concentrated segregation elements is stirred and diffused in a width-wise direction of slab, whereby a slab stabilized in center segregation qualities can be produced over long-time casting operation. Since the stirring flowing pattern is selectively imparted by means of the same electromagnetic stirrer, it is effective to decrease facility and equipment costs, improve maintainability, and extensively cope with various casting conditions. The continuous casting method stably ensures excellent center segregation qualities over a long time in casting of high-strength steel with high crack susceptibility or steel grade for extremely thick plate product.