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1. 发明专利

JP2003080305A Method and apparatus for removing eccentricity of roll 审中-公开
标题翻译：用于去除滚筒偏心的方法和装置
公开(公告)号：JP2003080305A
公开(公告)日：2003-03-18
申请号：JP2001272470
申请日：2001-09-07
申请人： Nippon Steel Corp , 新日本製鐵株式会社
发明人： KONNO YUSUKE , KATORI HIDEO
IPC分类号： B21B37/18 , B21B37/66
摘要： PROBLEM TO BE SOLVED: To reliably remove high-frequency disturbance of roll eccentricity caused by the deviation between the geometrical center and the center of mass of a back-up roll. SOLUTION: The thickness deviation of a steel sheet 9 caused by the disturbance of the roll eccentricity of the back-up roll 13 is reduced by repeatedly adding the deviation signal of rolling reaction force which is obtained by taking the deviation between a rolling reaction force signal including the disturbance of the roll eccentricity caused by the eccentricity of the back-up roll and reference rolling reaction force signal in the case it is considered that there is no disturbance of the roll eccentricity for a prescribed period and also by controlling screw-down location by using a signal related to the manipulated variable of the screw-down location in accordance with the added value.
摘要翻译：要解决的问题：为了可靠地消除由支撑辊的几何中心和质心之间的偏差引起的辊偏心率的高频干扰。解决方案：通过反复添加通过取得轧制反作用力信号之间的偏差获得的轧制反作用力的偏差信号来减小由支撑辊13的辊偏心度的干扰引起的钢板9的厚度偏差包括由于备用辊的偏心度引起的辊偏心的干扰和参考滚动反作用力信号，在认为在规定时间段内不存在辊偏心的干扰的情况下，以及通过控制拧紧位置通过根据附加值使用与拧紧位置的操纵变量相关的信号。

2. 发明专利

JP2002214149A FLAW DETECTING DEVICE FOR STEEL SHEET, FLAW DETECTING METHOD FOR STEEL SHEET, AND COMPUTER READABLE STORAGE MEDIUM 失效
公开(公告)号：JP2002214149A
公开(公告)日：2002-07-31
申请号：JP2001007902
申请日：2001-01-16
申请人： NIPPON STEEL CORP
发明人： KOBAYASHI TAKAMICHI , KATORI HIDEO , HASEGAWA NOBORU , KUNINAGA MANABU , NAITO SHUJI
IPC分类号： G01N21/892 , B21C51/00 , G06T1/00
摘要： PROBLEM TO BE SOLVED: To keep the number of detectable flaws nearly constant even when the formation level in a steel sheet is largely changed. SOLUTION: The steel sheet under flaw detection is photographed to generate the surface image of the steel sheet, and the dispersion state of the luminance in one frame of the surface image of the steel sheet is detected. The flaw detection threshold of the steel sheet is set according to the dispersion state of the luminance, and the flaw detection of the steel sheet is performed with the flaw detection threshold of the steel sheet. The number of detectable flaws can be kept nearly constant even when the formation in the steel sheet is largely changed by automatically updating the flaw detection threshold of the steel sheet.

3. 发明专利

JP2002174600A APPARATUS AND METHOD FOR DETECTING SURFACE DAMAGE OF STEEL PLATE, AND STORAGE MEDIUM 失效
公开(公告)号：JP2002174600A
公开(公告)日：2002-06-21
申请号：JP2000370560
申请日：2000-12-05
申请人： NIPPON STEEL CORP
发明人： HASEGAWA NOBORU , KATORI HIDEO , KOBAYASHI TAKAMICHI , KUNINAGA MANABU , NAITO SHUJI
IPC分类号： G01B11/00 , B21C51/00 , G01B11/30 , G01N21/892
摘要： PROBLEM TO BE SOLVED: To permit detection of surface damages of a steel plate, without correcting damage position on an image with a damage position of the plate by making possible a detection of the damage of an essential part, without being influenced by contamination or the like of a steel plate edge. SOLUTION: A method for detecting the surface damage of the steel plate comprises the steps of embedding luminance information of a texture level of the plate, in the edge of a prescribed width L1 from right and left edges ER and EL of the plate and its outside SR and SL, from edge information of the plate acquired from an edge detecting means 12, thereby canceling the edges L1 of the prescribed width and its outside SR and SL. Thus, nonconformities occurring, due to the contamination or the like adhered to the edge L1 and its outside SR and SL of the prescribed width, can be prevented.

4. 发明专利

JPH06279851A METHOD FOR CONTROLLING QUALITY OF HOT-ROLLED MATERIAL 失效
公开(公告)号：JPH06279851A
公开(公告)日：1994-10-04
申请号：JP6441693
申请日：1993-03-23
申请人： NIPPON STEEL CORP
发明人： KATORI HIDEO , SENUMA TAKEHIDE , YOSHITANI NAOHARU , UEYAMA KOJI , ITO MASAHIRO
IPC分类号： B21B45/02 , C21D8/02
摘要： PURPOSE:To embody sufficient gamma to alpha transformation of a hot-rolled steel sheet between stands in hot tandem rolling. CONSTITUTION:Based on the difference DELTAT(i) of the tension measured value and the aimed tension between the stand (i-1) and the stand (i), the changing quantity to the position of rolling reduction at the stand (i) is calculated. Based on the sheet thickness difference Hi-Hsi at the outlet side of the stand (i-1) and the rolling material velocity V(i-1) at the outlet side of the stand (i-1), the changing quantity to the position of rolling reduction at the stand (i) is calculated and the sum DELTAS(i) of both changing quantities to the positions of rolling reduction is calculated. Based on the correcting quantity DELTAS(i) to the position of rolling reduction, the position of rolling reduction is corrected by a driving means of the stand (i), and roll peripheral velocity is corrected according to the mass-flow constant rule. In the loop-less hot-rolling, the rolling material between the stands is cooled by a cooling device arranged near these stands and having >=1500 [kcal/m . deg.CC.hr] cooling capacity and transformed from the gamma grain to the alpha grain to >=80% in the metallurgical structure between these stands.

5. 发明专利

JP2002214345A PURGING DEVICE FOR OPTICAL MEASURING INSTRUMENT 失效
公开(公告)号：JP2002214345A
公开(公告)日：2002-07-31
申请号：JP2001007193
申请日：2001-01-16
申请人： NIPPON STEEL CORP
发明人： KATORI HIDEO , FUKUI NOBUO , AKEDA SHIGENORI
IPC分类号： G01P5/20 , B21C51/00 , G01S17/58
摘要： PROBLEM TO BE SOLVED: To prevent intrusion of water droplets and dust into a purge hood, while also preventing troubles with the passage of a steel plate and ensuring purging of an optical path. SOLUTION: The purging device for an optical measuring instrument which applies a laser beam to the underside of a metal strip to measure the moving speed of the metal strip from the reflected beam includes a first air exhausting means for exhausting purging air along the optical path of the laser beam from the head of the purge hood covering the entire measuring instrument, a shutting means located above the first air exhausting means to cause the air exhausted from the first air exhausting means to deviate from the optical path of the laser beam and having the function of allowing the laser beam to pass therethrough, and a second air exhausting means having the functions of exhausting the purging air above and along the optical path of the laser beam over the shutting means and allowing the laser beam to pass therethrough.

6. 发明专利

JP2002214146A LIGHTING SYSTEM FOR FLAW INSPECTION 失效
公开(公告)号：JP2002214146A
公开(公告)日：2002-07-31
申请号：JP2001009077
申请日：2001-01-17
申请人： NIPPON STEEL CORP
发明人： HASEGAWA NOBORU , KATORI HIDEO , KOBAYASHI TAKAMICHI , NAITO SHUJI
IPC分类号： G01N21/84 , G01N21/01
摘要： PROBLEM TO BE SOLVED: To provide an inexpensive lighting system for flaw inspection capable of uniformly illuminating an inspected material with high illuminance. SOLUTION: This lighting system for flaw inspection forming a linear illumination area 3 on the surface of the band-like or plate-like inspected material 1 is provided with a light source 10, an optical fiber unit 22 aligned with many optical fibers 23 to align and emit the incident light from the light source 10 into a linear shape, and a Fresnel lens 32 arranged on the outgoing side of the optical fiber unit 22.

7. 发明专利

JP2002195953A COLLECTION AND REFINING METHOD OF DATA FOR CREATING FLAW DISCRIMINATING LOGIC 失效
公开(公告)号：JP2002195953A
公开(公告)日：2002-07-10
申请号：JP2000395945
申请日：2000-12-26
申请人： NIPPON STEEL CORP
发明人： KATORI HIDEO
IPC分类号： G01N21/892 , B21C51/00 , G06T1/00
摘要： PROBLEM TO BE SOLVED: To shorten a period for creating a flaw judging logic. SOLUTION: The data candidates for harmful flaws are filtered for a geometric feature amount and brightness feature amount, in this order, from a flaw data file of a proper material, for automatic collection. The collected flaw image is observed by a person in charge of adjustment as required to delete an inappropriate flaw data, thus many harmful flaw data is collected in a short period.

8. 发明专利

JP2002181719A APPARATUS AND METHOD FOR DETECTING EDGE OF STEEL PANEL AND STORAGE MEDIUM 失效
公开(公告)号：JP2002181719A
公开(公告)日：2002-06-26
申请号：JP2000382724
申请日：2000-12-15
申请人： NIPPON STEEL CORP
发明人： HASEGAWA NOBORU , KATORI HIDEO , KOBAYASHI TAKAMICHI , KUNINAGA MANABU , NAITO SHUJI
IPC分类号： G01N21/892 , B21C51/00 , G06T1/00 , G06T7/00
摘要： PROBLEM TO BE SOLVED: To properly and accurately recognize the edge of a steel panel even if brightness is largely varied in one coil. SOLUTION: When the edge of the steel panel is detected on the basis of the brightness of the surface image of the steel panel in one scanning or several scannings, a threshold value at a time when the edge of the steel panel is detected on the basis of the brightness state of the surface image of the steel panel in one scanning or several scannings is calculated to make it possible to properly recognize the edge of the steel panel, even if brightness is largely varied in one coil to prevent the lowering of the function of a flaw detector caused by the fluctuations of brightness.

9. 发明专利

JP2002174849A PATTERN SHEET FOR ADJUSTING CAMERA AND METHOD FOR ADJUSTING CAMERA 失效
公开(公告)号：JP2002174849A
公开(公告)日：2002-06-21
申请号：JP2000370561
申请日：2000-12-05
申请人： NIPPON STEEL CORP
发明人： KOBAYASHI TAKAMICHI , KATORI HIDEO , HASEGAWA NOBORU , KUNINAGA MANABU , NAITO SHUJI
IPC分类号： G01N21/892 , B21C51/00 , G03B3/00 , G03B15/00 , G03B17/56
摘要： PROBLEM TO BE SOLVED: To accurately perform the adjustment of a camera in a short time even by an adjuster who is not a skilled adjuster. SOLUTION: By providing a lateral line written in a lateral direction in the center of a sheet and a plurality of longitudinal lines written in a longitudinal direction at both ends in the field of the camera in order to adjust the viewing point of the camera for detecting a flaw occurring on the surface of material to be inspected, photographing a pattern sheet for adjusting the camera by the camera and adjusting it while viewing the signal of the camera with an eye, the number of times of trial and error is reduced and even an unskilled adjuster can easily adjust the camera.

10. 发明专利

JP2002148202A IMAGING METHOD OF FLAW-INSPECTING APPARATUS AND FLAW- INSPECTING APPARATUS 失效
公开(公告)号：JP2002148202A
公开(公告)日：2002-05-22
申请号：JP2000347597
申请日：2000-11-15
申请人： NIPPON STEEL CORP
发明人： KOBAYASHI TAKAMICHI , KATORI HIDEO , KUNINAGA MANABU , HASEGAWA NOBORU
IPC分类号： G01N21/892
摘要： PROBLEM TO BE SOLVED: To provide an imaging method of a flaw-inspecting apparatus and a flaw-inspecting apparatus whereby a flaw inspection can be carried out in a throughput range of a computer smoothly and advantageously in terms of costs. SOLUTION: According to the imaging method of the flaw-inspecting apparatus, a reflecting light of an illumination light irradiated to a surface of a running steel plate is received by a line sensor camera, based on which images of the steel plate surface are constituted, so that flaws are detected by processing the images. An imaging resolution of the line sensor camera is varied in accordance with a velocity by which the steel plate is passed. For example, when the velocity becomes high, the imaging resolution is lowered by dividing pulses of a pulse generator, thereby producing a time in which the computer can process.

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