公开(公告)号：US06693948B2

公开(公告)日：2004-02-17

申请号：US10427488

申请日：2003-05-01

申请人： Hideaki Mizukami ,  Ryuji Yamaguchi ,  Takashi Nakayama ,  Teruo Tatefuku ,  Norio Ao ,  Toshimichi Maki ,  Yasuhiro Sato ,  Hirotsugu Kubo

发明人： Hideaki Mizukami ,  Ryuji Yamaguchi ,  Takashi Nakayama ,  Teruo Tatefuku ,  Norio Ao ,  Toshimichi Maki ,  Yasuhiro Sato ,  Hirotsugu Kubo

IPC分类号： F27D1300

CPC分类号： C21C5/565 ,  F27B3/06 ,  F27B3/065 ,  F27B3/085 ,  F27B3/186 ,  F27B3/225 ,  F27D3/0027 ,  F27D3/1509 ,  F27D13/002 ,  F27D2003/161 ,  F27D2003/168 ,  Y02P10/216

摘要： The present invention provides an arc-melting apparatus which attains extremely high efficiency by preheating scraps using exhaust gas from the melting chamber. The arc-melting apparatus needs for no device to carry and supply an iron source to a melting chamber, which makes it possible to preheat the next charge. The arc-melting apparatus has a melting furnace which melts scraps, a preheating shaft connected directly to an upper part of one side of the melting furnace, an arc electrode for melting scraps in the melting furnace, a bucket for supplying scraps to the preheat shaft so as to continuously maintain scraps in the melting furnace and in the preheating shaft, a tapping portion having a tapping hole, being projected outward from the melting furnace and a tilting device for tilting the melting furnace on a side of the tapping portion. The tapping portion is arranged at an orthogonal direction to the direction of the supplied cold iron source. The preheating shaft of the melting furnace and the tapping portion have a distance between the mutual part, so that scraps do not flow out on a the tapping hole side.

摘要翻译： 本发明提供一种电弧熔融装置，其通过使用来自熔融室的排气预热废料而获得极高的效率。 电弧熔化装置不需要装置将铁源运送和供应到熔化室，这使得可以预热下一次充电。 该电弧熔融装置具有：熔融炉的熔化炉，直接与熔融炉一侧的上部连接的预热轴，熔融炉内的熔融物用的电弧电极，向预热轴供给废料的斗 以便在熔化炉和预热轴中连续地保持废料，具有从熔炉向外突出的出钢孔的攻丝部分和用于使熔化炉在出钢部分侧倾斜的倾斜装置。 攻丝部分配置在与供应的冷铁源方向正交的方向上。 熔化炉的预热轴和攻丝部分在相互的部分之间具有距离，使得废料在出钢孔侧不流出。

公开(公告)号：US06597722B2

公开(公告)日：2003-07-22

申请号：US09775153

申请日：2001-02-01

申请人： Hideaki Mizukami ,  Ryuji Yamaguchi ,  Norio Ao ,  Toshimichi Maki

发明人： Hideaki Mizukami ,  Ryuji Yamaguchi ,  Norio Ao ,  Toshimichi Maki

IPC分类号： F27D1300

CPC分类号： C21C5/565 ,  F27B3/06 ,  F27B3/065 ,  F27B3/085 ,  F27B3/186 ,  F27B3/225 ,  F27D3/0027 ,  F27D3/1509 ,  F27D13/002 ,  F27D2003/161 ,  F27D2003/168 ,  Y02P10/216

摘要： The present invention provides an arc-melting apparatus, which attains extremely high efficiency by preheating scraps using exhaust gas from the melting chamber. The arc-melting apparatus needs for no device to carry and supply an iron source to a melting chamber, which makes it possible to preheat the next charge. The arc-melting apparatus has a melting furnace which melts scraps, a preheating shaft connected directly to an upper part of one side of the melting furnace, an arc electrode for melting scraps in the melting furnace, a bucket for supplying scraps to the preheat shaft so as to continuously maintain scraps in the melting furnace and in the preheating shaft, a tapping portion having a tapping hole, being projected outward from the melting furnace and a tilting device for tilting the melting furnace on a side of the tapping portion. The tapping portion is arranged at an orthogonal direction to the direction of the supplied cold iron source. The preheating shaft of the melting furnace and the tapping portion have a distance between the mutual part, so that scraps do not flow out on a the tapping hole side.

摘要翻译： 本发明提供了一种电弧熔化装置，其通过使用来自熔化室的废气预热废料而获得极高的效率。 电弧熔化装置不需要装置将铁源运送和供应到熔化室，这使得可以预热下一次充电。 该电弧熔融装置具有：熔融炉的熔化炉，直接与熔融炉一侧的上部连接的预热轴，熔融炉内的熔融物用的电弧电极，向预热轴供给废料的斗 以便在熔化炉和预热轴中连续地保持废料，具有从熔炉向外突出的出钢孔的攻丝部分和用于使熔化炉在出钢部分侧倾斜的倾斜装置。 攻丝部分配置在与供应的冷铁源方向正交的方向上。 熔化炉的预热轴和攻丝部分在相互的部分之间具有距离，使得废料在出钢孔侧不流出。

公开(公告)号：US5155740A

公开(公告)日：1992-10-13

申请号：US789527

申请日：1991-11-07

申请人： Norio Ao ,  Kazuhiko Mori

发明人： Norio Ao ,  Kazuhiko Mori

IPC分类号： C21C5/52 ,  F27B3/28 ,  H02J3/18 ,  H05B7/144

CPC分类号： C21C5/5229 ,  F27B3/28 ,  H02J3/1864 ,  H05B7/144 ,  Y02E40/12 ,  Y02P10/216 ,  Y02P10/256 ,  Y02P10/259 ,  Y02P10/34

摘要： A flicker compensating apparatus for compensating for flickering due to a variation in the reactive power generated from a DC arc furnace connected by an AC/DC converter to an AC power system, comprises: a current detector for detecting a DC current flowing in the DC arc furnace; a controller for determining the phase control angle of a thyristor included in the AC/DC converter in accordance with the difference between the detected DC current and a predetermined reference current; a calculator for calculating reactive power to be generated by the DC arc furnace, from the detected DC current, the determined phase control angle, and a no-load DC voltage; a compensator including a reactive load connected via thyristor to the power system; and a controller for controlling the phase control angle of the thyristor of the compensator in accordance with the calculated reactive power, for controlling a current flowing across the reactive load, and for permitting the compensator to generate such reactive power as to compensate for a variation in the calculated reactive power.

摘要翻译： 一种用于补偿由由AC / DC转换器连接到AC电力系统的DC电弧炉产生的无功功率变化引起的闪烁的闪烁补偿装置，包括：电流检测器，用于检测在直流电弧中流动的直流电流 炉; 控制器，用于根据所检测的直流电流与预定参考电流之间的差异确定包括在AC / DC转换器中的晶闸管的相位控制角; 用于计算由直流电弧炉产生的无功功率的计算器，根据检测到的直流电流，所确定的相位控制角和空载直流电压; 包括通过晶闸管连接到电力系统的无功负载的补偿器; 以及控制器，用于根据所计算的无功功率来控制补偿器的晶闸管的相位控制角，用于控制流过无功负载的电流，并且允许补偿器产生这样的无功功率以补偿变化 计算无功功率。

公开(公告)号：US5033534A

公开(公告)日：1991-07-23

申请号：US487758

申请日：1990-03-02

申请人： Mikio Suzuki ,  Toru Kitagawa ,  Shinobu Miyahara ,  Akio Nagamune ,  Yoshiyuki Kanao ,  Norio Ao ,  Hironori Yamamoto

发明人： Mikio Suzuki ,  Toru Kitagawa ,  Shinobu Miyahara ,  Akio Nagamune ,  Yoshiyuki Kanao ,  Norio Ao ,  Hironori Yamamoto

IPC分类号： B22D11/115

CPC分类号： B22D11/115

摘要： A method for continuous casting of steel comprises charging molten steel from a tundish into a mold through exit ports of an immersion nozzle, introducing a magnetic field vertically to a flow of the molten steel from the exit ports by the use of at least a pair of direct current magnets which are arranged on the outer side of copper plates on the wide side of the mold, the immersion nozzle being placed between the direct current magnets and polarities of magnetisms on the top side of the magnets being the same, and casting the molten steel at a predetermined casting rate. One magnetic pole of the direct current magnet is positioned at an upper end of copper plate on the wide side of the mold and the other magnetic pole being positioned at lower than the exit port of the immersion nozzle and on the outer side of copper plate on the wide side of the mold. The immersion nozzle has two exit ports, each of which has an angle of 15.degree. to 45.degree. downward. The direct current magnetic field is controlled within the range of 1000 to 4000 gauss.

公开(公告)号：US5535235A

公开(公告)日：1996-07-09

申请号：US405182

申请日：1995-03-16

申请人： Norio Ao ,  Hirotsugu Kubo

发明人： Norio Ao ,  Hirotsugu Kubo

IPC分类号： C22B7/00 ,  C21C5/52 ,  C21C5/56 ,  C21C7/00 ,  F27B3/06 ,  F27B3/08 ,  F27B3/18 ,  F27D13/00 ,  F27D23/00

CPC分类号： C21C5/5252 ,  C21C5/565 ,  F27D13/002 ,  C21C2007/0093 ,  F27B3/085

摘要： A melting furnace including preheating vessels for preheating raw material, and a melting furnace body having a tilting device and a heating device for heating the preheated raw material. A furnace roof covers an upper part of the melting furnace body and a combustion chamber for burning a gas generated in the melting furnace body is arranged on the furnace roof. Feed openings are arranged at side faces of the combustion chamber to feed the preheated raw material into the melting furnace body, and the side faces of the combustion chamber are positioned at a right angle to a tilting direction of the melting furnace body. Supply openings are arranged at lower ends of the preheating vessels to supply the preheated raw material through the feed openings to the melting furnace body. A connecting mechanism is provided for movably connecting the supply openings with the feed openings when the melting furnace body is tilted.

摘要翻译： 一种熔炉，包括用于预热原料的预热容器，以及具有用于加热预热的原料的倾斜装置和加热装置的熔炉体。 炉顶覆盖熔炉体的上部，并且在炉顶设置有用于燃烧在熔炉体中产生的气体的燃烧室。 进料口布置在燃烧室的侧面，以将预热的原料进料到熔炉体内，并且燃烧室的侧面与熔化炉体的倾斜方向成直角。 供应开口布置在预热容器的下端，以将预热的原料通过进料口供给熔化炉体。 提供连接机构，用于当熔炉体倾斜时可动地将供应开口与进料口连接起来。