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：USRE35607E

公开(公告)日：1997-09-16

申请号：US185696

申请日：1994-01-24

申请人： Akio Nagamune ,  Koichi Tezuka ,  Yoshiyuki Kanao

发明人： Akio Nagamune ,  Koichi Tezuka ,  Yoshiyuki Kanao

IPC分类号： B22D2/00 ,  G01F23/284 ,  G01S13/28 ,  G01S13/32 ,  G01V3/08 ,  G01S13/08

CPC分类号： G01F23/284 ,  B22D2/003 ,  G01S13/288 ,  G01S13/325

摘要： A distance measuring method and apparatus in which first and second pseudo random signals which are the same in pattern but slightly different in period are generated to obtain a correlation output of the first and second pseudo random signals before transmission thereof as a reference correlation output, and the first pseudo random signal is directly transmitted toward a target or alternatively a carrier wave is modulated by the first pseudo random signal and transmitted toward the target. A correlation output of the signal reflected and received from the target and the second pseudo random signal is detected and the distance to the target is measured from the time interval between the reference correlation output and the received correlation output. Alternatively, the modulated carrier wave reflected and received from the target and the second pseudo random signal are subjected to correlation processing to detect a correlative modulated carrier wave and the correlative modulated carrier is subjected to orthogonal detection by a reference carrier wave thereby obtaining a target detection output. Then, the distance to the target is measured from the time interval between the reference correlation output and the target detection output.

摘要翻译： 产生距离测量方法和装置，其中以模式相同但周期稍有不同的第一和第二伪随机信号被产生，以获得其发送之前的第一和第二伪随机信号作为参考相关输出的相关输出，以及 第一伪随机信号被直接发送到目标，或者替代地，载波被第一伪随机信号调制并被发送到目标。 检测从目标反射和接收的信号与第二伪随机信号的相关输出，并且从参考相关输出和接收到的相关输出之间的时间间隔测量到目标的距离。 或者，对从目标反射和接收的调制载波和第二伪随机信号进行相关处理以检测相关调制载波，并且通过参考载波对相关调制载波进行正交检测，从而获得目标检测 输出。 然后，从参考相关输出和目标检测输出之间的时间间隔测量到目标的距离。

公开(公告)号：US5148177A

公开(公告)日：1992-09-15

申请号：US660299

申请日：1991-02-22

申请人： Akio Nagamune ,  Kouichi Tezuka ,  Yoshiyuki Kanao ,  Isamu Komine

发明人： Akio Nagamune ,  Kouichi Tezuka ,  Yoshiyuki Kanao ,  Isamu Komine

IPC分类号： B22D2/00 ,  C21C5/46 ,  G01F23/284 ,  G01S13/32 ,  G01S13/88 ,  H01Q1/02 ,  H01Q19/13

CPC分类号： G01F23/284 ,  B22D2/003 ,  C21C5/4673 ,  G01S13/325 ,  G01S13/88 ,  H01Q1/02 ,  H01Q19/13

摘要： An in-furnace level meter for measuring a slag level, or the like, in a convertor, and an antenna used therefore. An antenna position is controlled so that the distance between the antenna inserted in the convertor and the slag level can be established to be constant or within a predetermined range. A water-cooled structure antenna is used as the antenna.

公开(公告)号：US5075863A

公开(公告)日：1991-12-24

申请号：US307891

申请日：1989-02-07

申请人： Akio Nagamune ,  Koichi Tezuka ,  Yoshiyuki Kanao

发明人： Akio Nagamune ,  Koichi Tezuka ,  Yoshiyuki Kanao

IPC分类号： B22D2/00 ,  G01F23/284 ,  G01S13/28 ,  G01S13/32

CPC分类号： G01F23/284 ,  B22D2/003 ,  G01S13/288 ,  G01S13/325

摘要： A distance measuring method and apparatus in which first and second pseudo random signals which are the same in pattern but slightly different in period are generated to obtain a correlation output of the first and second pseudo random signals before transmission thereof as a reference correlation output, and the first pseudo random signal is directly transmitted toward a target or alternatively a carrier wave is modulated by the first pseudo random signal and transmitted toward the target. A correlation output of the signal reflected and received from the target and the second pseudo random signal is detected and the distance to the target is measured from the time interval between the reference correlation output and the received correlation output. Alternatively, the modulated carrier wave reflected and received from the target and the second pseudo random signal are subjected to correlation processing to detect a correlative modulated carrier wave and the correlative modulated carrier wave is subjected to orthogonal detection by a reference carrier wave thereby obtaining a target detection output. Then, the distance to the target is measured from the time interval between the reference correlation output and the target detection output.

摘要翻译： 产生距离测量方法和装置，其中以模式相同但周期稍有不同的第一和第二伪随机信号被产生，以获得其发送之前的第一和第二伪随机信号作为参考相关输出的相关输出，以及 第一伪随机信号被直接发送到目标，或者替代地，载波被第一伪随机信号调制并被发送到目标。 检测从目标反射和接收的信号与第二伪随机信号的相关输出，并且从参考相关输出和接收到的相关输出之间的时间间隔测量到目标的距离。 或者，对从目标反射和接收的调制载波和第二伪随机信号进行相关处理以检测相关调制载波，并且通过参考载波对相关调制载波进行正交检波，从而获得目标 检测输出。 然后，从参考相关输出和目标检测输出之间的时间间隔测量到目标的距离。