公开(公告)号：JP4713956B2

公开(公告)日：2011-06-29

申请号：JP2005172819

申请日：2005-06-13

Applicant: 黒崎播磨株式会社

Inventor： 雄浄 丸川 ,  峯夫 内田 ,  貴文 原田

IPC: B22D41/50 ,  B22D11/10

公开(公告)号：JP5291814B2

公开(公告)日：2013-09-18

申请号：JP2012030763

申请日：2012-02-15

Applicant: 黒崎播磨株式会社

Inventor： 英俊 神尾 ,  貴文 原田

IPC: B22D11/10 ,  B22D41/50

Abstract: PROBLEM TO BE SOLVED: To prevent breakage especially in the initial period of passing through molten steel, in a nozzle for continuous casting, such as a long nozzle. SOLUTION: In the nozzle for continuous casting, which is composed of a tubular refractory structure 1 that has an inner hole 2 through which a molten metal passes in an axial center and is formed in axial symmetry; in the lengthwise cross section passing through the axial center of the tubular refractory structure 1, the outer periphery at the lower end part of the nozzle has a shape of a quadratic curve on the basis of arbitrary points of dy in the lower direction and dx in the outer peripheral direction from the lower end-edge of the inner hole 2, and a stress-reduction ratio of the generated stress in the shape of the quadratic curve is not less than 17% on the basis of the generated stress, in a case when the lengthwise cross section of the outer periphery at the lower end part of the tubular refractory structure 1 has a right angle shape. COPYRIGHT: (C)2012,JPO&INPIT

公开(公告)号：JP5626895B2

公开(公告)日：2014-11-19

申请号：JP2011075685

申请日：2011-03-30

Applicant: 黒崎播磨株式会社

Inventor： 貴文 原田 ,  貴文 原田 ,  立川　孝一 ,  孝一 立川

IPC: B22D11/10 ,  B22D41/50

公开(公告)号：JP5459851B2

公开(公告)日：2014-04-02

申请号：JP2010083904

申请日：2010-03-31

Applicant: 黒崎播磨株式会社 ,  新日鐵住金株式会社

Inventor： 貴文 原田 ,  孝一 立川 ,  友一郎 吉光 ,  史郎 祐成

IPC: B22D11/10 ,  B22D41/58