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. 03, 1997
Filed:
Sep. 08, 1995
Susumu Ishiguro, Kakogawa, JP;
Masaki Nitta, Kakogawa, JP;
Kenzo Ayata, Kakogawa, JP;
Hideo Mori, Kakogawa, JP;
Kabushiki Kaisha Kobe Seiko Sho, Kobe, JP;
Abstract
To provide a continuous casting method to diminish as much as possible center segregation and center porosity in the center of the cast piece, structure, a continuous casting method includes the application of reduction to a cast piece in the final solidification stage of the cast piece draw out process of continuous casting. The reduction is commenced at a point after the center solid fraction of the cast piece has reached 0.2, and the reduction gradient is decreased as the center solid fraction grows larger. The enlargement of the center solid fraction is divided into at least three zones with an optimal reduction gradient (%/m) established for each of the zones.