公开(公告)号：US08418749B2

公开(公告)日：2013-04-16

申请号：US13126948

申请日：2009-11-04

申请人： Takehiko Toh ,  Hideaki Yamamura ,  Kenji Umetsu

发明人： Takehiko Toh ,  Hideaki Yamamura ,  Kenji Umetsu

IPC分类号： B22D11/115

CPC分类号： B22D11/115 ,  B22D11/043

摘要： A continuous casting device for steel of the present invention includes a casting mold for casting a molten steel, a submerged entry nozzle, an electromagnetic stirring device, and an electromagnetic brake device. Further, a curved portion which is curved toward the electromagnetic stirring device is formed at least at a position where the curved portion faces the submerged entry nozzle, on each of the long side walls. Moreover, the horizontal distance between a top of the curved portion and the submerged entry nozzle in plan view is equal to or more than 35 mm and less than 50 mm.

摘要翻译： 本发明的钢的连续铸造装置包括铸钢浇铸用模具，浸入式喷嘴，电磁搅拌装置以及电磁制动装置。 此外，在每个长侧壁上至少形成有弯曲部分朝向浸没式入口喷嘴的位置弯曲的电磁搅拌装置的弯曲部分。 此外，平面图中弯曲部分的顶部和浸没入口喷嘴之间的水平距离等于或大于35mm且小于50mm。

公开(公告)号：US20100059197A1

公开(公告)日：2010-03-11

申请号：US12516061

申请日：2007-12-03

申请人： Takehiko Toh ,  Masahiro Tani ,  Kazuhisa Tanaka ,  Shinichi Fukunaga

发明人： Takehiko Toh ,  Masahiro Tani ,  Kazuhisa Tanaka ,  Shinichi Fukunaga

IPC分类号： B22D27/02

CPC分类号： B22D11/115

摘要： The present invention provides a continuous casting method of molten metal using electromagnetic force to improve the cast slab surface properties and reduce the nonmetallic inclusions and bubbles trapped inside the cast slab. An alternating current is run through an electromagnetic coil 4 arranged around a casting mold 1 so as to surround a casting space 8 to control the meniscus shape to improve the cast slab surface properties, the discharge ports 6 of a submerged entry nozzle 5 are made upward oriented, and the direction of the discharge flow 14 from the discharge ports 6 is made one to above the intersection A of the casting mold short side and meniscus. Due to this, the nonmetallic inclusions and bubbles in the discharge flow are absorbed by the continuous casting mold flux of the meniscus 11 at the part of the meniscus reached. Further, the discharge flow 14 receives electromagnetic force due to the electromagnetic coil 4 whereby the spread of the discharge flow in the cast slab thickness direction is suppressed and the discharge flow 14 does not contact the long side shell 12, so it is possible to keep nonmetallic inclusions and bubbles from being trapped from the discharge flow 14 at the long side shell 12.

摘要翻译： 本发明提供一种使用电磁力的熔融金属的连续铸造方法，以改善铸坯表面性能并减少非铸造板坯内的非金属夹杂物和气泡。 交流电流穿过围绕铸模1布置的电磁线圈4，以围绕铸造空间8以控制弯月面形状以改善铸坯表面性能，使浸入式喷嘴5的排出口6向上 并且将排出口6的排出流路14的方向设置在铸模短边和弯液面的交点A之上。 由此，排出流中的非金属夹杂物和气泡被半月板部分的弯液面11的连续铸模熔剂吸收。 此外，排出流14受到电磁线圈4的电磁力的影响，能够抑制铸坯厚度方向的排出流的扩散，排出流14不与长边壳12接触，因此能够保持 非金属夹杂物和气泡被从长侧壳12的排出流14捕获。

公开(公告)号：US20140190655A1

公开(公告)日：2014-07-10

申请号：US14237757

申请日：2011-11-09

申请人： Takehiko Toh ,  Junji Nakashima ,  Yasuo Maruki ,  Norimasa Yamasaki ,  Keiji Tsunenari ,  Kenji Umetsu

发明人： Takehiko Toh ,  Junji Nakashima ,  Yasuo Maruki ,  Norimasa Yamasaki ,  Keiji Tsunenari ,  Kenji Umetsu

IPC分类号： B22D11/115

CPC分类号： B22D11/115 ,  B22D11/041 ,  B22D11/10

摘要： A continuous casting apparatus for steel includes: a casting mold for casting a molten steel with a pair of long side walls and a pair of short side walls; a submerged entry nozzle which discharges the molten steel into the casting mold; and an electromagnetic stirring device which is disposed along each external surface of each of the long side walls and stirs an upper portion of the molten steel within the casting mold. A curved portion which is convexly curved toward the electromagnetic stirring device in plan view is formed at least at a position where the curved portion faces the submerged entry nozzle on each of the long side walls, and each of the long side walls including the curved portion has a uniform thickness. The shortest horizontal distance between a top which is a most depressed position when an internal surface of the curved portion is seen in plan view and an outer peripheral surface of the submerged entry nozzle is 30 mm to 80 mm in a range from a lower end portion of the electromagnetic stirring device to a position higher than an upper end portion thereof by 50 mm when viewed along a vertical direction.

摘要翻译： 一种用于钢的连续铸造设备包括：用于铸造具有一对长侧壁和一对短侧壁的钢水的铸造模具; 一个将钢水排放到铸模中的浸入式喷嘴; 以及电磁搅拌装置，其沿着每个长侧壁的每个外表面设置并搅拌铸模内的钢水的上部。 至少在弯曲部分面对每个长侧壁上的浸没入口喷嘴的位置处形成有朝平面图向电磁搅拌装置弯曲的弯曲部分，并且每个长侧壁包括弯曲部分 具有均匀的厚度。 当在平面图中看到弯曲部分的内表面的最凹陷位置的顶部与浸入式喷嘴的外周表面之间的最短水平距离在从下端部分的范围内为30mm至80mm 的电磁搅拌装置沿着垂直方向观察到比其上端部高出50mm的位置。

公开(公告)号：US5985674A

公开(公告)日：1999-11-16

申请号：US737839

申请日：1996-12-13

申请人： Kazushige Umezawa ,  Tokio Suzuki ,  Koichi Chiba ,  Ryuji Uemori ,  Takehiko Toh ,  Hiroyuki Kondo ,  Katsuhiro Fuchigami ,  Eiichi Takeuchi ,  Masamitsu Wakoh ,  Akihiro Ono

发明人： Kazushige Umezawa ,  Tokio Suzuki ,  Koichi Chiba ,  Ryuji Uemori ,  Takehiko Toh ,  Hiroyuki Kondo ,  Katsuhiro Fuchigami ,  Eiichi Takeuchi ,  Masamitsu Wakoh ,  Akihiro Ono

IPC分类号： G01N33/20 ,  G01N21/64

CPC分类号： G01N33/206 ,  G01N33/20 ,  Y10T436/20 ,  Y10T436/25375

摘要： In order to quickly and economically evaluate cleanliness of a metal with high representativity when quantities, compositions, etc., of non-metallic inclusion particles existing in a metal and resulting in product defects are evaluated by a sample collected during the production process of the metal, the present invention provides an evaluation method involving the steps of levitation-melting a metal piece for a predetermined time by cold crucible levitation-melting means, discharging non-metallic inclusion particles contained in the metal piece to the surface of a molten metal, and directly analyzing a curved and non-smooth sample surface after solidification by a fluorescent X-ray analysis method using an energy dispersion type spectroscope, or by other chemical or physical measurements, to measure or analyze the quantities of elements constituting the non-metallic inclusion particles and to determine quantity of the non-metallic inclusions.

摘要翻译： PCT No.PCT / JP96 / 00650 Sec。 371日期1996年12月13日第 102（e）日期1996年12月13日PCT提交1996年3月14日PCT公布。 公开号WO96 / 28729 日期1996年9月19日为了快速，经济地评价金属含量高的金属的含量，组成等对金属中存在的金属夹杂物的数量，组成等造成产品缺陷的清洁度， 本发明提供了一种评价方法，其包括以下步骤：通过冷坩埚悬浮熔化装置将金属片悬浮熔融预定时间，将包含在金属片中的非金属夹杂物颗粒排出到 熔融金属，并且通过使用能量分散型分光器的荧光X射线分析方法或通过其他化学或物理测量直接分析固化后的弯曲和非光滑样品表面，以测量或分析构成 非金属夹杂物颗粒并确定非金属夹杂物的量。

公开(公告)号：US5746268A

公开(公告)日：1998-05-05

申请号：US646230

申请日：1996-05-09

申请人： Keisuke Fujisaki ,  Kiyoshi Wajima ,  Kenji Umetsu ,  Kenzo Sawada ,  Takatsugu Ueyama ,  Takehiko Toh ,  Kensuke Okazawa ,  Yasushi Okumura

发明人： Keisuke Fujisaki ,  Kiyoshi Wajima ,  Kenji Umetsu ,  Kenzo Sawada ,  Takatsugu Ueyama ,  Takehiko Toh ,  Kensuke Okazawa ,  Yasushi Okumura

IPC分类号： B22D11/115 ,  B22D27/02

CPC分类号： B22D11/115

摘要： A method and an apparatus for continuously casting a metal slab made of steel are provided for uniformly circulating molten metal on a meniscus in a mold. The cast metal slab has no surface defect such as a slitting. On the meniscus, the method and apparatus operates to generate electromagnetic stirring thrusts along two long mold sides, these thrusts being opposed to each other. The thrust oriented from a dipping nozzle to the short mold side is made larger than the thrust oriented from the short mold side to the dipping nozzle. A circuit for connecting each coil of a shifting field electromagnetic stirring coil part with a three-phase power supply is symmetric to another circuit with respect to the dipping nozzle. The circuit is divided into two parts along each long mold side. The divided circuit parts are located in parallel but have respective impedances.

摘要翻译： PCT No.PCT / JP95 / 00027 Sec。 371日期：1996年5月9日 102（e）日期1996年5月9日PCT提交1995年1月12日PCT公布。 WO95 / 24285 PCT公开号 日期1995年9月14日提供了一种用于连续铸造由钢制成的金属板的方法和装置，用于将熔融金属均匀地循环在模具中的弯液面上。 铸钢板没有表面缺陷，如切割。 在弯液面上，该方法和装置操作以沿着两个长的模具侧产生电磁搅拌推力，这些推力彼此相对。 使从浸渍喷嘴到短模侧的推力大于从短模侧到浸渍喷嘴的推力。 用于将换档场电磁搅拌线圈部分的每个线圈与三相电源连接的电路相对于浸渍喷嘴与另一个电路对称。 电路沿着每个长模侧分为两部分。 划分的电路部件并联设置，但是具有各自的阻抗。

公开(公告)号：US5657816A

公开(公告)日：1997-08-19

申请号：US549735

申请日：1996-02-23

申请人： Hiroshi Harada ,  Eiichi Takeuchi ,  Takehiko Toh ,  Takanobu Ishii

发明人： Hiroshi Harada ,  Eiichi Takeuchi ,  Takehiko Toh ,  Takanobu Ishii

IPC分类号： B22D11/11 ,  B22D11/115 ,  B22D27/02

CPC分类号： B22D11/115

摘要： The present invention provides a method, for regulating the flow of a molten steel within a mold by taking advantage of a direct current magnetic field, comprising the step of carrying out continuous casting while regulating the flow of a molten steel, delivered through a nozzle, by applying a direct current magnetic field having a substantially uniform magnetic flux distribution over the whole width direction of the mold, characterized in that the flow velocity of a meniscus on the surface of the molten steel within the mold is regulated in a range of from 0.20 to 0.40 m/sec by regulating the molten steel delivery angle of the nozzle, the position of the magnetic field, and the magnetic flux density. When the flow velocity of the meniscus is greatly increased, a stream of the molten steel delivered through the nozzle is allowed to collide directly with a short-side wall of the mold and, thereafter, the flow velocity is regulated according to the following equation (1), while, when the flow velocity of the meniscus is increased or decreased, a stream of the molten steel delivered through the nozzle is allowed to traverse a magnetic field zone and then to collide with a short-side wall of the mold and, thereafter, the flow velocity is regulated according to the following equation (2):V.sub.P /V.sub.O =1+.alpha..sub.1 {1-exp(-.beta..sub.1 .multidot.H.sup.2)}(1)V.sub.P /V.sub.O =1+.alpha..sub.2 {sin (.beta..sub.2 .multidot.H)exp(-r.multidot.H)} (2)wherein H=185.8.multidot.B.sup.2 .multidot.D.multidot.T/(D+T)V.

摘要翻译： PCT No.PCT / JP94 / 00513 Sec。 371日期1996年2月23日 102（e）日期1996年2月23日PCT 1994年3月29日PCT公布。 公开号WO95 / 26243 日期：1995年10月5日本发明提供了一种通过利用直流磁场来调节模具内的钢水流动的方法，包括在调节钢水流动的同时进行连续铸造的步骤， 通过在模具的整个宽度方向施加具有基本上均匀的磁通分布的直流磁场，通过喷嘴输送，其特征在于，模具内的钢水表面上的弯液面的流速被调节在 通过调节喷嘴的钢水输送角度，磁场的位置和磁通密度，从0.20到0.40m / sec的范围。 当弯月面的流速大大增加时，通过喷嘴输送的钢水流被直接与模具的短边壁碰撞，然后根据下式来调节流速（ 1），而当弯月面的流速增加或减小时，允许通过喷嘴输送的钢水流过磁场区，然后与模具的短边壁碰撞， 此后，流速根据以下等式（2）进行调节：VP / VO = 1 +α1{1-exp（-β1XH2）}（1）VP / VO = 1 +α2{sin（β2×H ）exp（-rxH）}（2）其中H = 185.8×B 2×D×T /（D + T）V。