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1. 发明专利

JPH032428B2 失效
公开(公告)号：JPH032428B2
公开(公告)日：1991-01-16
申请号：JP6446984
申请日：1984-03-31
申请人： NIPPON KOKAN KK
发明人： TAKAHASHI IKUO , SHIBATA YOICHI , SATO JUJI , KIMURA RYOSUKE , IZUMI MASARO
IPC分类号： G01P5/22 , G01P5/18

2. 发明专利

JPS63290943A METHOD FOR MEASURING GRAIN SIZE OF BLAST FURNACE CHARGE 失效
公开(公告)号：JPS63290943A
公开(公告)日：1988-11-28
申请号：JP12585187
申请日：1987-05-25
申请人： NIPPON KOKAN KK
发明人： YAMAMOTO SHUICHI , KIMURA RYOSUKE , SHIBATA YOICHI , KISHIMOTO SUMIYUKI
IPC分类号： G01N15/02 , C21B7/24
摘要： PURPOSE:To calculate the average grain size of blast furnace charge by obtaining the image signal on the surface of the charge by a television camera installed in the throat of a blast furnace and processing the image signal after Fourier transform. CONSTITUTION:The video signal from the television camera 3 is monitored as an image by a television monitor 5 and the image processing is executed in real time by digital processing in an image processor 6, the output of which is outputted to a CRT display 7 and a printer 8. There is much dust in the blast furnace and the sharp image on the surface of the charge is not obtainable in some cases. The image processing is thereupon executed by taking out the signal for an optional one scanning component of the television camera, determining power spectra by the Fourier transform in real time and calculating the grain size only when the component of the frequency range higher than the predetermined frequency among said spectra is larger than the predetermined threshold value.

3. 发明专利

JP2636557B2 失效
公开(公告)号：JP2636557B2
公开(公告)日：1997-07-30
申请号：JP15539791
申请日：1991-05-31
申请人： NIPPON KOKAN KK
发明人： HIROKAWA TAKASHI , SUZUKI HIROYUKI , SHIBATA YOICHI , ABE MASAHIRO , KUROIWA SHINICHI
IPC分类号： C21D9/56 , C21D1/00 , C21D11/00

4. 发明专利

JP2521512B2 失效
公开(公告)号：JP2521512B2
公开(公告)日：1996-08-07
申请号：JP7475088
申请日：1988-03-30
申请人： NIPPON KOKAN KK
发明人： KIMURA RYOSUKE , YAMAMOTO SHUICHI , SHIBATA YOICHI , KISHIMOTO SUMYUKI
IPC分类号： C21B5/00 , G06T1/00 , G06T7/00

5. 发明专利

JPH04354828A METHOD FOR DETECTING TENSION OF MATERIAL TO BE ANNEALED IN HORIZONTAL CONTINUOUS ANNEALING FURNACE 失效
公开(公告)号：JPH04354828A
公开(公告)日：1992-12-09
申请号：JP15539791
申请日：1991-05-31
申请人： NIPPON KOKAN KK
发明人： HIROKAWA TAKASHI , SUZUKI HIROYUKI , SHIBATA YOICHI , ABE MASAHIRO , KUROIWA SHINICHI
IPC分类号： C21D9/56 , C21D1/00 , C21D11/00
摘要： PURPOSE:To provide a tension detecting method by which the tension of a material to be annealed can be detected excellently to an extremely low range in a horizontal continuous annealing furnace. CONSTITUTION:In the horizontal continuous annealing furnace 1 on which plural supporting rolls 3a, 3b are provided and through which strip-like or linear material 5 to be annealed passes while supporting with the above-mentional supporting rolls 3a, 3b, by passing through pentration holes 2a, 2b formed to furnace side walls at a center position between the supporting rolls 3a, 3b in the furnace, catenary rate of the material is detected with an optical catenary detector and based on this detected quantity, the tension of the material in the furnace is detected.

6. 发明专利

JPH04341590A METHOD FOR PICKLING HOT-ROLLED STEEL SHEET AND DEVICE THEREFOR 失效
公开(公告)号：JPH04341590A
公开(公告)日：1992-11-27
申请号：JP11283291
申请日：1991-05-17
申请人： NIPPON KOKAN KK
发明人： ISHIHARA KOJI , HAGIWARA AKIRA , MIYAZAKI TAKAO , TADA TAKESHI , KASHIWAZAKI KICHIYA , SUZUKI HIROYUKI , HIROKAWA TAKASHI , SHIBATA YOICHI
IPC分类号： C23G1/08 , C23G3/02
摘要： PURPOSE:To highly efficiently pickle a hot-rolled steel sheet utilizing cavitation by injecting a laminar high-pressure pickling soln. on the entire region of the steel sheet in its cross direction and impressing a continuous ultrasonic wave with the pickling soln. as a medium. CONSTITUTION:A laminar high-pressure pickling soln. is injected on the surface of a hot-rolled steel sheet 1 introduced into a pickling device 13 at a specified angle. The content of the laminar high-pressure pickling soln. column 12a is transmitted, and a focused ultrasonic wave 8 of 20-100kHz frequency is impressed on the sheet 1 surface. The sheet is efficiently pickled by the impact force and chemical action of the high-pressure pickling soln. and the chemical reaction accelerating action and impact force of cavitation. A plate wave is generated by the injected strong ultrasonic wave in the forward and backward rolling directions of the sheet 1. A boundary layer between the sheet 1 surface and the pickling soln. supplied by the soln. column 12a is broken by the plate wave, and pickling is accelerated.

7. 发明专利

JPH04341589A METHOD FOR PICKLING HOT-ROLLED STEEL SHEET 失效
公开(公告)号：JPH04341589A
公开(公告)日：1992-11-27
申请号：JP11274891
申请日：1991-05-17
申请人： NIPPON KOKAN KK
发明人： ISHIHARA KOJI , MIYAZAKI TAKAO , HAGIWARA AKIRA , TADA TAKESHI , KASHIWAZAKI KICHIYA , SUZUKI HIROYUKI , HIROKAWA TAKASHI , SHIBATA YOICHI
IPC分类号： C23G1/08 , C23G3/02
摘要： PURPOSE:To efficiently and effectively descale and pickle a steel sheet by focusing an ultrasonic energy at a specified angle to the steel sheet surface to increase its density and causing cavitation. CONSTITUTION:A hot-rolled steel sheet 1 is predistorted in the lower yield region by a scale breaker 10 and then conveyed into a pickling layer 13 by a roll 11 through an inlet 9. The sheet 1 is kept at a fixed level between rolls 12 and 12. A strong focused ultrasonic wave 21 of 20-100kHz frequency is injected from an oscillator 20 set in a pickling soln. 13 onto the upper and lower surfaces of the sheet 1. The ultrasonic wave 21 is line-focused on the sheet 1 surface by a cylindrical acoustic lens 3 to cover the entire region of the sheet 1 in its cross direction. Cavitation is caused by the ultrasonic wave 21, and the sheet is efficiently pickled. Meanwhile, the boundary layer between the sheet 1 surface and the pickling soln. 13 is broken by the produced plate wave, and pickling is accelerated.

8. 发明专利

JPH0380842B2 失效
公开(公告)号：JPH0380842B2
公开(公告)日：1991-12-26
申请号：JP6446884
申请日：1984-03-31
申请人： NIPPON KOKAN KK
发明人： SHIBATA YOICHI , HORIUCHI YOSHIHIRO , KIMURA RYOSUKE , KITAGAWA MITSUHIRO , SUMIKAMA TAKASHI
IPC分类号： C21B7/24 , F27B1/28

9. 发明专利

JPH04341588A METHOD FOR PICKLING HOT-ROLLED STEEL SHEET 失效
公开(公告)号：JPH04341588A
公开(公告)日：1992-11-27
申请号：JP11272991
申请日：1991-05-17
申请人： NIPPON KOKAN KK
发明人： ISHIHARA KOJI , MIYAZAKI TAKAO , HAGIWARA AKIRA , TADA TAKESHI , KASHIWAZAKI KICHIYA , SUZUKI HIROYUKI , HIROKAWA TAKASHI , SHIBATA YOICHI
IPC分类号： C23G1/08 , C23G3/02
摘要： PURPOSE:To efficiently and effectively descale and pickle a steel sheet by focusing an ultrasonic energy at a specified angle to the sheet surface to cause cavitation. CONSTITUTION:A hot-rolled steel sheet 1 is predistorted in the lower yield region by a scale breaker 10 and conveyed into a pickling layer 13 by a roll 11 through an inlet 9. The sheet 1 is kept at a fixed level between rolls 12 and 12. A strong focused ultrasonic wave 21 of 20-100kHz frequency is injected from an oscillator 20 set in a pickling soln. 13 onto the upper and lower surfaces of the sheet 1. The ultrasonic wave 21 is line-focused on the sheet 1 surface by a cylindrical acoustic lens 3 to cover the entire region of the sheet 1 in its cross direction. Cavitation is caused by the ultrasonic wave 21, and the sheet is efficiently pickled. Besides, the boundary layer on the sheet 1 surface and the pickling soln. 13 is broken, and pickling is accelerated.

10. 发明专利

JPH01248283A METHOD FOR DETECTING FLUIDIZED PART OF RAW MATERIAL IN BLAST FURNACE 失效
公开(公告)号：JPH01248283A
公开(公告)日：1989-10-03
申请号：JP7475088
申请日：1988-03-30
申请人： NIPPON KOKAN KK
发明人： KIMURA RYOSUKE , YAMAMOTO SHUICHI , SHIBATA YOICHI , KISHIMOTO SUMIYUKI
IPC分类号： C21B5/00 , G06T1/00 , G06T7/00
摘要： PURPOSE:To measure the fluidized state of the raw material in a blast furnace in real time by deciding the part as a fluidized part when the variation value caused by the movement of red-hot coke is lower than a specific reference value. CONSTITUTION:A maximum luminance selector 12 is provided with memories respectively corresponding to each picture element and the memories are present to values corresponding to minimum luminance at the initial time of a period. Whenever new data are inputted, thereafter, the new data are compared with the contents of the memories and, when the new data are larger, the contents of the memories are updated to the new data by replacement. When the contents of the memories are read out after the elapse of a fixed period, the values correspond to the maximum luminance signals of the period. Signals from the maximum luminance selector are inputted to a uniform luminance signal section identification device 13 where spatial variable amount is calculated. The spatial variable amount thus calculated are compared with specified values at every picture element and the part where the variable amount is lower than the specific value is discriminated as a uniform luminance signal section. Therefore, the area of a fluidized part of the surface of the raw material in a blast furnace can be detected accurately in real time.

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