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1. 发明公开

EP0801304A4 MAGNETIC SENSOR, AND MAGNETIC FLAW DETECTION METHOD AND APPARATUS USING THE MAGNETIC SENSOR 失效
标题翻译：磁传感器与方法及装置磁故障检测将这种磁性传感器
公开(公告)号：EP0801304A4
公开(公告)日：1999-01-27
申请号：EP96935511
申请日：1996-10-31
申请人： NIPPON KOKAN KK
发明人： MURAKAMI YOSHIHIRO , NAGAMUNE AKIO , KATO HIROHARU , YOTSUJI JUNICHI , MAEDA KOZO , IWANAGA KENICHI
IPC分类号： G01N27/82 , G01N27/90 , G01N27/83
CPC分类号： G01N27/82 , G01N27/9026 , G01N27/9033
摘要： A magnetic sensor for magnetic leakage flaw detection with high accurracy without much reducing lift-off, and a method and an apparatus for magnetic flaw detection using the magnetic sensor. The magnetic sensor (50) detects a magnetic flux generated due to a flaw in an object which is magnetized, and includes a ferromagnetic E-shaped core (51) having poles (51a, 51b, 51c) disposed in the proximity of a steel sheet (13) under inspection, and a search coil (52) for detecting the magnetic flux, wound on a center pole (51b) of the E-shaped core. External magnetic fields around this E-shaped magnetic sensor (50) pass through the magnetic poles (51a, 51c) on both sides of the E-shaped core but do not cross the center magnetic pole (51b) of the E-shaped core. Therefore, a voltage due to the external magnetic fields is not induced in the search coil (52), and only the magnetic flux resulting from the flaw is detected. Therefore, directivity to the external magnetic fields can be improved, the occurrence of the noise due to external magnetic fields can be restricted, and an S/N ratio can be improved at the time of flaw detection.
摘要翻译：在哪个漏磁探伤的磁传感器能够以高的精度进行，而不因此减少剥离，并且其磁传感器施加磁缺陷检测方法和装置。用于检测由于磁化主体的缺陷部分所产生的磁通的磁传感器50被检查具有E形具有在钢板（13）的附近布置磁极（51A，51B和51C），以芯51 被检查，并在中心磁极的搜索线圈（52）卷绕（51B），用于检测的磁通的E形铁芯的。外部磁场漂浮在E形磁传感器的圆周的磁极穿过E形铁芯51的相对侧的磁性（51a和51c中），但不穿过中间磁极51b上的的E形核心。因此，不会因外部磁场电压在测试线圈（52）引起的，所以也仅检测由缺陷引起的部分的磁通量。因此，象由于外部磁场的噪声电压的产生被抑制，S / N在缺陷检测时提高相对于该方向性外部磁场被改善。

2. 发明公开

EP0776715A4 METHOD OF CONTROLLING CONTINUOUS CASTING AND APPARATUS THEREFOR 失效
标题翻译：方法和设备控制的连续铸造
公开(公告)号：EP0776715A4
公开(公告)日：1999-06-02
申请号：EP96904264
申请日：1996-02-28
申请人： NIPPON KOKAN KK
发明人： TEZUKA KOICHI , NAGAMUNE AKIO , MAEDA HIROSHI , MIYAHARA HIROAKI , OHTA ATSUSHI , OHSUMI AKIRA
IPC分类号： B22D11/16 , B22D11/18
CPC分类号： B22D11/161 , B22D11/18 , B22D11/181
摘要： A method of and an apparatus for controlling continuous casting comprising the steps of measuring the molten metal level inside a mold immediately after the start of teeming until the molten metal level reaches the level of the steady operation, controlling the teeming rate, and automatically starting cast-drawing. The molten metal level is continuously measured by an electrode type level meter, and the molten metal rise rate is determined on the basis of the change of the molten metal level. The flow rate of the molten steel discharged from the tundish is controlled on the basis of the difference between the molten metal rise rate and a reference rate. When the molten metal level reaches a predetermined reference level lower than the molten metal level of the steady operation, cast-drawing is started.

3. 发明专利

ITMI942640A1 未知
公开(公告)号：ITMI942640A1
公开(公告)日：1996-06-23
申请号：ITMI942640
申请日：1994-12-23
申请人： NIPPON KOKAN KK , NIRECO CORP
发明人： YAMADA TAKEO , SUGAWARA MASAO , MATSUMOTO KOUICHI , NAGAMUNE AKIO , TEZUKA KOUICHI
IPC分类号： G01S11/00 , B22D11/20 , C21C5/30 , C21C5/46 , G01F23/24 , G01F23/284
摘要： First and second electrodes are inserted into molten metal. A first pseudo random signal is transmitted to the first electrode, and at the same time the first pseudo random signal and a second pseudo random signal which has the same pattern as the first pseudo random signal but which is slightly different in frequency from the first pseudo random signal are multiplied by each other in a first multiplier to thereby calculate a first product value. A signal obtained from the second electrode and the second pseudo random signal are multiplied by each other in a second multiplier to thereby obtain a second product value. The displacement of the molten metal is calculated from the time difference between maximum correlation values respectively appearing in time series patterns of the first and second product values.

4. 发明专利

DE69019954D1 未知
公开(公告)号：DE69019954D1
公开(公告)日：1995-07-13
申请号：DE69019954
申请日：1990-03-07
申请人： NIPPON KOKAN KK
发明人： SUZUKI MIKIO , KITAGAWA TORU , MIYAHARA SHINOBU , NAGAMUNE AKIO , KANAO YOSHIYUKI , AO NORIO , YAMAMOTO YUKINORI PATENT LIC D
IPC分类号： B22D11/115 , B22D11/10
摘要： The invention relates to a method for the continuous casting of steel, comprising charging molten steel from a tundish into a mold through exit ports (33) of an immersion nozzle (22), introducing a magnetic field vertically to a flow of the molten steel from the exit ports (33) by the use of at least a pair of direct current magnets (23) which are arranged on the outer side of copper plates (21) on the wide side of the mold, the immersion nozzle (27) being placed between the direct current magnets (23) and the polarities of magnetism on the top side of the magnets (23) being the same, and casting the molten steel at a predetermined casting rate. One magnetic pole of the direct current magnet (23) is positioned at an upper end of copper plate (21) on the wide side of the mold and the other magnetic pole is positioned lower than the exit port (33) of the immersion nozzle (22) and on the outer side of copper plate (21) on the wide side of the mold. The immersion nozzle (22) has two exit ports (33), each of which has a downward angle of 15 to 45 DEG . The direct current magnetic field is controlled within the range of 1000 to 4000 gauss.

5. 发明专利

AT123579T 未知
公开(公告)号：AT123579T
公开(公告)日：1995-06-15
申请号：AT89308025
申请日：1989-08-07
申请人： NIPPON KOKAN KK
发明人： NAGAMUNE AKIO , TEZUKA KOICHI , KANAO YOSHIYUKI
IPC分类号： G01F23/284 , G01S13/28 , G01S13/32 , G01V3/12 , G01F23/28
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.

6. 发明专利

CA2011410A1 METHOD FOR CONTINUOUS CASTING OF STEEL 未知
公开(公告)号：CA2011410A1
公开(公告)日：1991-09-02
申请号：CA2011410
申请日：1990-03-02
申请人： NIPPON KOKAN KK
发明人： SUZUKI MIKIO , KITAGAWA TORU , MIYAHARA SHINOBU , NAGAMUNE AKIO , KANAO YOSHIYUKI , AO NORIO , YAMAMOTO HIRONORI
IPC分类号： B22D11/115 , B22D11/00 , B22D11/12 , B22D27/02
摘要： The invention relates to a method for the continuous casting of steel, comprising charging molten steel from a tundish into a mold through exit ports (33) of an immersion nozzle (22), introducing a magnetic field vertically to a flow of the molten steel from the exit ports (33) by the use of at least a pair of direct current magnets (23) which are arranged on the outer side of copper plates (21) on the wide side of the mold, the immersion nozzle (27) being placed between the direct current magnets (23) and the polarities of magnetism on the top side of the magnets (23) being the same, and casting the molten steel at a predetermined casting rate. One magnetic pole of the direct current magnet (23) is positioned at an upper end of copper plate (21) on the wide side of the mold and the other magnetic pole is positioned lower than the exit port (33) of the immersion nozzle (22) and on the outer side of copper plate (21) on the wide side of the mold. The immersion nozzle (22) has two exit ports (33), each of which has a downward angle of 15 to 45 DEG . The direct current magnetic field is controlled within the range of 1000 to 4000 gauss.

7. 发明专利

DE69019954T2 未知
公开(公告)号：DE69019954T2
公开(公告)日：1995-11-30
申请号：DE69019954
申请日：1990-03-07
申请人： NIPPON KOKAN KK
发明人： SUZUKI MIKIO , KITAGAWA TORU , MIYAHARA SHINOBU , NAGAMUNE AKIO , KANAO YOSHIYUKI , AO NORIO , YAMAMOTO YUKINORI PATENT LIC D
IPC分类号： B22D11/115 , B22D11/10
摘要： The invention relates to a method for the continuous casting of steel, comprising charging molten steel from a tundish into a mold through exit ports (33) of an immersion nozzle (22), introducing a magnetic field vertically to a flow of the molten steel from the exit ports (33) by the use of at least a pair of direct current magnets (23) which are arranged on the outer side of copper plates (21) on the wide side of the mold, the immersion nozzle (27) being placed between the direct current magnets (23) and the polarities of magnetism on the top side of the magnets (23) being the same, and casting the molten steel at a predetermined casting rate. One magnetic pole of the direct current magnet (23) is positioned at an upper end of copper plate (21) on the wide side of the mold and the other magnetic pole is positioned lower than the exit port (33) of the immersion nozzle (22) and on the outer side of copper plate (21) on the wide side of the mold. The immersion nozzle (22) has two exit ports (33), each of which has a downward angle of 15 to 45 DEG . The direct current magnetic field is controlled within the range of 1000 to 4000 gauss.

8. 发明专利

DE69019159D1 未知
公开(公告)号：DE69019159D1
公开(公告)日：1995-06-08
申请号：DE69019159
申请日：1990-11-09
申请人： NIPPON KOKAN KK
发明人： NAGAMUNE AKIO , TEZUKA KOICHI , KOMINE ISAMU
IPC分类号： G01S13/02 , G01S13/88 , G01V3/30
摘要： An underground radar tomography method or apparatus. An electromagnetic wave is emitted into the ground, and the amplitude and propagation time delay of transmitted waves, reflected waves and diffracted waves are detected at a large number of points. The detected signals are processed to obtain high precision data of the distribution of underground layers and soil quality as tomographic data. Two pseudo-random signals having the same code pattern with their periods being a little bit different to obtain a measuring time which is expanded with respect to the propagation time, so that accuracy is improved.

9. 发明专利

ZA9102368B IN-FURNACE SLAG LEVEL MEASURING METHOD AND APPARATUS THEREFOR 未知
公开(公告)号：ZA9102368B
公开(公告)日：1991-12-24
申请号：ZA9102368
申请日：1991-03-28
申请人： NIPPON KOKAN KK
发明人： NAGAMUNE AKIO , AKIO NAGAMUNE , KOMINE ISAMU , ISAMU KOMINE , KOMATANI MASAKI , MASAKI KOMATANI , TEZUKA KOUICHI , KOUICHI TEZUKA , KURIYAMA SHINJI , SHINJI KURIYAMA , INOUE AKIHIKO , AKIHIKO INOUE
IPC分类号： G01S13/28 , C21C20060101 , G01C20060101 , G01S20060101 , G01S13/10 , G01S , C21C , G01C

10. 发明专利

ZA9102367B IN-FURNACE SLAG LEVEL MEASURING APPARATUS 未知
公开(公告)号：ZA9102367B
公开(公告)日：1991-12-24
申请号：ZA9102367
申请日：1991-03-28
申请人： NIPPON KOKAN KK
发明人： NAGAMUNE AKIO , AKIO NAGAMUNE , TEZUKA KOUICHI , KOUICHI TEZUKA , KOMINE ISAMU , ISAMU KOMINE
IPC分类号： G01S13/28 , C21C20060101 , G01C20060101 , G01S20060101 , G01S13/10 , G01S , G01C

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