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公开(公告)号：US10220438B2
公开(公告)日：2019-03-05
申请号：US15121180
申请日：2015-02-05
Applicant: KROSAKIHARIMA CORPORATION
Inventor： Takuya Okada , Takahiro Kuroda
IPC: B22D11/103 , B22D41/56 , B22D41/50 , B22D11/10
Abstract: An immersion nozzle for use with an immersion nozzle replacement apparatus, capable of preventing crack formation due to the presence of a neck region. The immersion nozzle includes a nozzle body, a flange, and a metal casing. The nozzle body is formed such that a region of an outer peripheral surface thereof located above a point of power of an upward supporting force from a supporting device extends vertically up to an upper edge of the nozzle body without any dimensional change with respect to an central axis of an inner bore of the nozzle body. The outer peripheral surface region is not joined to the metal casing.
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公开(公告)号：US09815741B2
公开(公告)日：2017-11-14
申请号：US15128265
申请日：2015-02-12
Applicant: Krosakiharima Corporation
Inventor： Keiichiro Akamine , Kazuo Ito , Taro Makino
IPC: C04B35/103 , C04B35/56 , B22D41/54 , B22D41/32 , F27D3/14 , C04B35/632 , C04B35/645
CPC classification number: C04B35/103 , B22D41/32 , B22D41/54 , C04B35/013 , C04B35/101 , C04B35/106 , C04B35/56 , C04B35/5603 , C04B35/62665 , C04B35/632 , C04B35/645 , C04B2235/3217 , C04B2235/3418 , C04B2235/3817 , C04B2235/3821 , C04B2235/3826 , C04B2235/386 , C04B2235/3873 , C04B2235/3895 , C04B2235/402 , C04B2235/422 , C04B2235/428 , C04B2235/5427 , C04B2235/5436 , C04B2235/5472 , C04B2235/602 , C04B2235/721 , F27D1/0006 , F27D3/14
Abstract: A refractory to be used repeatedly or for a long period of time, such as a refractory for casting, especially a nozzle for casting and an SN plate, has improved tolerance. The refractory for casting contains Al4O4C in the range of 15 to 60% by mass, both inclusive, an Al component as a metal in the range of 1.2 to 10.0% by mass, both inclusive, and a balance including Al2O3, a free C, and other refractory component; a sum of Al4O4C, Al2O3, and the Al component as a metal is 85% or more by mass; and a content of Al4O4C (Al4O4C), a content of the Al component as a metal (Al), and a content of the free carbon (C). The contact of the free carbon satisfies the following Equation 1 and Equation 2: 1.0≦C/(Al4O4C×0.038+Al×0.33) (Equation 1) and 1.0≧C/(Al4O4C×0.13+Al×0.67) (Equation 2).
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公开(公告)号：US20170211885A1
公开(公告)日：2017-07-27
申请号：US15500417
申请日：2015-06-30
Applicant: KROSAKIHARIMA CORPORATION
Inventor： Kazuhiro HONDA
CPC classification number: F27D1/16 , C04B35/66 , C22C1/05 , C23C4/10 , F27D1/1636
Abstract: Provided is a thermal spray material capable of, when used in a thermal spray operation for repairing a furnace wall of an industrial furnace or for other purposes, maintaining good post-repetition bondability with respect to a target surface to thereby prevent peel-off of a resulting thermally sprayed deposit, and improving initial ignitability while suppressing dust-generating property. The thermal spray material comprised a basic compound comprising at least one of a Ca component and an Mg component, a metal Si powder, and a silica-based or alumina-silica based powder. A content rate of a fraction constituting the basic compound and having a particle size of 0.15 mm or less is 30 mass % or more with respect to 100 mass % of the basic compound, and a content rate of a fraction constituting the metal Si powder and having a particle size of 20 μm or less is from 10 mass % to 25 mass % with respect to 100 mass % of the thermal spray material. Further, (the content rate (mass %) of the fraction constituting the metal Si powder and having a particle size of 20 μm or less, with respect to 100 mass % of the thermal spray material)/(a content rate (mass %) of the fraction constituting the basic compound and having a particle size of 0.15 mm or less, with respect to 100 mass % of the thermal spray material) is from 0.8 to 10, and a content rate of a fraction constituting the metal Si powder and. having a particle size of 10 μm or less is 60 mass % or more with respect to 100 mass % of the metal Si powder.
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公开(公告)号：US20170014897A1
公开(公告)日：2017-01-19
申请号：US15121180
申请日：2015-02-05
Applicant: KROSAKIHARIMA CORPORATION
Inventor： Takuya OKADA , Takahiro KURODA
IPC: B22D11/103 , B22D41/56 , B22D41/50
CPC classification number: B22D11/103 , B22D11/10 , B22D41/50 , B22D41/502 , B22D41/56
Abstract: An immersion nozzle for use with an immersion nozzle replacement apparatus, capable of preventing crack formation due to the presence of a neck region. The immersion nozzle includes a nozzle body, a flange, and a metal casing. The nozzle body is formed such that a region of an outer peripheral surface thereof located above a point of power of an upward supporting force from a supporting device extends vertically up to an upper edge of the nozzle body without any dimensional change with respect to an central axis of an inner bore of the nozzle body. The outer peripheral surface region is not joined to the metal casing.
Abstract translation: 一种用于浸入式喷嘴更换装置的浸入式喷嘴，能够防止由于存在颈部区域而形成的裂缝。 浸入式喷嘴包括喷嘴体，凸缘和金属壳体。 喷嘴体形成为使得其外周面的位于来自支撑装置的向上支撑力的上方的区域的区域垂直向上延伸到喷嘴体的上边缘，而相对于中心部没有任何尺寸变化 喷嘴体的内孔的轴线。 外周面区域不与金属壳体接合。
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公开(公告)号：US20240269737A1
公开(公告)日：2024-08-15
申请号：US18567590
申请日：2022-05-31
Applicant: KROSAKIHARIMA CORPORATION
Inventor： Shinichi FUKUNAGA , Toshio KAKU , Hiroki FURUKAWA
Abstract: A stopper for continuous casting that is intended to prevent adhesion of inclusions to the vicinity of a fitting part of a stopper, and to prevent a nose region of the stopper from cracking or peeling off due to insufficient strength. The stopper for continuous casting includes a gas flow cavity in a vertically-extending central part thereof. In at least part of a vertical section of a nose periphery region of the stopper, a porous refractory material having a gas permeability is arranged on the side of an outer peripheral surface of the nose periphery region. A refractory material having higher strength than that of the porous refractory material is arranged on the side of an inner peripheral surface of the nose periphery region.
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Patent Agency Ranking
公开(公告)号：US20230035070A1
公开(公告)日：2023-02-02
申请号：US17791425
申请日：2021-01-05
Applicant: KROSAKIHARIMA CORPORATION
Inventor： Kenichi OKI , Kouichi TACHIKAWA
IPC: B22D41/58
Abstract: A bubbling plate for a sliding nozzle includes a plate body defining an inner hole therein and a gas-permeable ring installed inside the plate body to define part of the inner hole. The ring has a lower end surface formed with a stepped part, a convex part or a concave part; and the plate body has an upper surface in contact with the lower end surface with the upper surface formed with a stepped part, a concave part or a convex part capable of being opposed to and fittingly engaged with a corresponding part of the ring. The area in which the part of the ring is fittingly engaged with the corresponding part of the plate body has a length of 2 mm or more along a direction of a central axis of the inner hole, and mortar is interveningly provided in at least a longitudinally-extending joint part in the fitting engagement area.
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公开(公告)号：US11192825B2
公开(公告)日：2021-12-07
申请号：US16487591
申请日：2018-01-19
Applicant: KROSAKIHARIMA CORPORATION
Inventor： Tarou Makino , Shuuji Noai , Keiichirou Akamine
IPC: B22D11/10 , C04B35/101 , B22D41/32
Abstract: Disclosed is a refractory product for casting of steel, which is capable of forming a dense surface layer which is high in terms of a slag infiltration suppressing ability and strong, in a surface region thereof efficiently or sufficiently or in an optimum state. The refractory product contains 1 mass % or more of free carbon, and 2 mass % to 15 mass % of an aluminum component as metal, with the remainder comprising a refractory material as a main composition, wherein the refractory product has a permeability of 1×10−16 m2 to 15×10−16m2.
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公开(公告)号：US10682696B2
公开(公告)日：2020-06-16
申请号：US16077587
申请日：2017-02-07
Applicant: KROSAKIHARIMA CORPORATION
Inventor： Shinichi Fukunaga , Takahiro Kuroda , Tatsuya Oouchi , Takuya Okada , Akira Ootsuka
Abstract: In the method for replacing an immersion nozzle while pushing out a used immersion nozzle by a new immersion nozzle, in order to minimize leakage of molten steel during the replacement, to enable the use of a shaped joint sealer in a joint interface, and to ensure high sealability, a concave portion is formed on the new immersion nozzle's upper plane so as to include a nozzle hole, and the shaped joint sealer is mounted in this concave portion. The immersion nozzle's upper plane is caused to slide while being pressed to the upper nozzle's lower plane.
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公开(公告)号：US20200038944A1
公开(公告)日：2020-02-06
申请号：US16342701
申请日：2017-10-16
Applicant: KROSAKIHARIMA CORPORATION
Inventor： Toshihiro IMAHASE
Abstract: A plate, a plate-holding apparatus, and a holding method for the plate for facilitating work to attach the plate to a plate-receiving metal frame of a sliding nozzle device. A gap is ensured between a to-be-held portion of the plate and an inner wall surface of an engagement groove such that, when the plate is held by engaging the to-be-held portion of the plate with the engagement groove of a holding portion of the plate-holding apparatus, the plate is movable in the longitudinal direction, the width direction, and the thickness direction of the plate.
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公开(公告)号：US20190382313A1
公开(公告)日：2019-12-19
申请号：US16487591
申请日：2018-01-19
Applicant: KROSAKIHARIMA CORPORATION
Inventor： Tarou MAKINO , Shuuji NOAI , Keiichirou AKAMINE
IPC: C04B35/101 , B22D11/10 , B22D41/32
Abstract: Disclosed is a refractory product for casting of steel, which is capable of forming a dense surface layer which is high in terms of a slag infiltration suppressing ability and strong, in a surface region thereof efficiently or sufficiently or in an optimum state. The refractory product contains 1 mass % or more of free carbon, and 2 mass % to 15 mass % of an aluminum component as metal, with the remainder comprising a refractory material as a main composition, wherein the refractory product has a permeability of 1×10−16m2 to 15×10−16m2.
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