公开(公告)号：JP5156141B1

公开(公告)日：2013-03-06

申请号：JP2012224458

申请日：2012-10-09

Applicant: 黒崎播磨株式会社

Inventor： 有人 溝部 ,  兼士 古川 ,  哲生 続木 ,  正樹 山本 ,  譲二 栗栖

IPC: B22D11/10 ,  B22D41/50 ,  B22D41/58

CPC classification number: B22D41/50 ,  B22D41/08 ,  B22D41/58

Abstract: In order to further limit the occurrence of accretions by adding a gas in-blowing function to an upper nozzle with a bore shape capable of creating a smooth (uniform) molten steel flow with minimal energy loss to limit the occurrence of accretions, a nozzle is used wherein, when the nozzle length is (L), the calculated head height is (H) and the radius at a distance (z) downward from the upper end is (r(z)), the shape of a cross-section of the wall surface of the bore through which the molten steel passes, the cross-section being cut along the axis of the bore, is a curve in which the derivative with respect to (z) of (r(z)) between the curves represented by log (r(z))=(1/1.5)xlog((H+L)/(H+z))+log(r(L)) and log (r(z))=(1/6)xlog((H+L)/(H+z))+log(r(L)) is continuous. The nozzle is configured so that the flow velocity (VL)(m/s) of the molten steel passing through the bore at the lowest end of the upper nozzle and the gas ratio (RG)=(QG/QL)x100(%), which is the volume ratio of the in-blown gas flow rate (QG)(NL/s) to the molten steel flow rate (QL)(L/s), satisfy the relationship (RG)

公开(公告)号：JP5269713B2

公开(公告)日：2013-08-21

申请号：JP2009167786

申请日：2009-07-16

Applicant: 黒崎播磨株式会社 ,  新日鐵住金株式会社

Inventor： 有人 溝部 ,  哲生 続木 ,  譲二 栗栖 ,  孝治 城戸 ,  知治 下笠 ,  新一 福永 ,  賢司 定野 ,  武士 大川

IPC: B22D11/10 ,  B22D41/50

Abstract: PROBLEM TO BE SOLVED: To provide a designing device of a ladle assembly for continuous casting, capable of sufficiently preventing spouting of molten steel from the joint part of the upper edge of a long nozzle when opening an immersed hole. SOLUTION: The designing device of a ladle assembly for continuous casting includes: a sand pole movement calculating means for calculating the temporal changes in the speed and the position of the sand pole and for further calculating the temporal change in the height of the level of pooled molten steel that is pooled on the sand pole, while setting as an initial state the state in which a quantity of plugging sand to be dropped in use is filled onto the level of the molten steel pool in the space in a nozzle tube of which the lower part length d is immersed in the molten steel pool, making a sand pole an integrated elastic body that performs stress transmission with a pressure coefficient of μ w k, and allowing the molten steel to flow in with a volume flow of Q m from the upper part of the nozzle; a minimum nozzle-diameter determining means for calculating the height of the level of the pooled molten steel at the time when all of the sand pole is discharged through the lower edge of the nozzle by using the sand pole movement calculating means while changing a tube inner diameter R step-wise, and for determining the minimum inner diameter of the nozzle so that the height of the level is not higher than the height of the upper edge of the nozzle; and a nozzle volume calculating means for calculating a required in-tube volume in the space in the nozzle tube based on the minimum tube inner diameter R of the nozzle. COPYRIGHT: (C)2011,JPO&INPIT

公开(公告)号：JP4578555B2

公开(公告)日：2010-11-10

申请号：JP2009040594

申请日：2009-02-24

Applicant: 黒崎播磨株式会社

Inventor： 孝治 城戸 ,  大塚　　博 ,  譲二 栗栖 ,  有人 溝部 ,  貴宏 黒田

IPC: B22D11/10 ,  B22D41/50

Abstract: An immersion nozzle for continuous casting, including (1) a tubular body with a bottom, the tubular body having an inlet for entry of molten steel disposed at an upper end and a passage extending inside the tubular body downward from the inlet, and (2) a pair of opposing outlets disposed in a sidewall at a lower section of the tubular body so as to communicate with the passage, the nozzle comprising: a pair of opposing ridges horizontally projecting into the passage from an inner wall between the pair of outlets, the inner wall defining the passage.

公开(公告)号：JP5645736B2

公开(公告)日：2014-12-24

申请号：JP2011079668

申请日：2011-03-31

Applicant: 黒崎播磨株式会社

Inventor： 貴宏 黒田 ,  貴宏 黒田 ,  譲二 栗栖 ,  譲二 栗栖 ,  大樹 古川 ,  大樹 古川 ,  有人 溝部 ,  有人 溝部

IPC: B22D11/10 ,  B22D41/50

CPC classification number: B22D41/50

公开(公告)号：JP5047854B2

公开(公告)日：2012-10-10

申请号：JP2008084166

申请日：2008-03-27

Applicant: 黒崎播磨株式会社

Inventor： 政英 吉田 ,  孝治 城戸 ,  大塚　　博 ,  尚丈 奥村 ,  譲二 栗栖 ,  有人 溝部

IPC: B22D11/10 ,  B22D41/50

CPC classification number: B22D41/50

公开(公告)号：JP4653679B2

公开(公告)日：2011-03-16

申请号：JP2006076007

申请日：2006-03-20

Applicant: 黒崎播磨株式会社

Inventor： 孝治 木戸 ,  譲二 栗栖 ,  淳一 船渡

IPC: B22D41/42 ,  B22D11/10

CPC classification number: B22D41/42