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1. 发明专利

JPS61196160A SPALLING POSITION DETECTOR FOR ROLLING ROLL 失效
公开(公告)号：JPS61196160A
公开(公告)日：1986-08-30
申请号：JP3849185
申请日：1985-02-27
申请人： KAWASAKI STEEL CO , HITACHI LTD , HITACHI ENG CO LTD
发明人： INOUE NORIAKI , KATAYAMA JIRO , HIRUOKA SHIYUUICHI , SAITO HIDETOSHI , MATSUURA MASAYUKI , YONEYAMA TAKAO , SATO KAZUYA
IPC分类号： G01N29/44 , G01M99/00 , G01N29/07
摘要： PURPOSE:To locate the position of spalling generation on a rolling roll accurately, by comparing the arrival order of two elastic wave signals to an elastic wave transducer mounted at both axial ends of the roll. CONSTITUTION:An elastic wave transducer 5 is mounted at both ends of a bearing 4 of a backup roll 1 and elastic wave signals S1 and S2 generated are detected to obtain effective signal components S1a and S2a through an amplifier 6 and a filter 7. On the other hand, a revolutions detector 9 is mounted to a driving part of a work roll 2 to obtain a rotation signal C with a tachometer 10. Then, the X-axis position of the signals S1a and S2a and the Y-axis position distribution of the rotating direction are measured with a position locating circuit 8 and the results are transferred to a microcomputer 12 for data analysis. Then, when the results are larger than the location value predetermined in the location of the position of the circuit 8 in comparison, an alarm 11 is given to detect the generation of spalling on the rolls 1 and 2. Besides, the distribution of the generation position thereof is displayed in hystogram on a monitor TV 13 to locate the generation position accurately.

2. 发明专利

JPS61228343A APPARATUS FOR DIAGNOSING DAMAGE OF SLIDING BEARING OF ROLLING MACHINE 失效
公开(公告)号：JPS61228343A
公开(公告)日：1986-10-11
申请号：JP6962485
申请日：1985-04-02
申请人： KAWASAKI STEEL CO , HITACHI LTD , HITACHI ENG CO LTD
发明人： INOUE NORIAKI , KATAYAMA JIRO , YONEYAMA TAKAO , SATO KAZUYA , HIRUOKA SHIYUUICHI , SAITO HIDETOSHI , MATSUURA MASAYUKI
IPC分类号： G01M13/00 , G01M13/04 , G01N29/14
摘要： PURPOSE:To simplify and miniaturize the titled apparatus and to make it possible to diagnose the damage of a bearing with high reliability, by detecting an acoustic signal by successively changing over a bearing to be diagnosed by a scanning device every time when a rolling material is bitten in rolls. CONSTITUTION:Acoustic transducers 5 are attached to the sliding bearings 1 provided to both ends of the backup roll 2 of a rolling machine and the ultrasonic acoustic signal, generated when each bearing 1 received damage, is outputted while converted to an electric signal. At the time of the detection of said acoustic signal, the big sound generated by the biting of a rolling material is detected by a biting detector 15 and the acoustic signal is inputted to the multiplexer 8 of a scanning apparatus 7 by the metal-in signal of said detector 15. Subsequently, the multiplexer 8 is changed over and the acoustic signal is compared with a set value in a bearing damage detection circuit 12 to perform the judgement of damage. Therefore, one measuring system is employed on and after the scanning apparatus 7 and the apparatus is simplified and miniaturized and the damage of the bearing can be diagnosed with high reliability.

3. 发明专利

JPS61200467A APPARATUS FOR DIAGNOSING DAMAGE OF SLIDE BEARING 失效
公开(公告)号：JPS61200467A
公开(公告)日：1986-09-05
申请号：JP4091385
申请日：1985-03-01
申请人： KAWASAKI STEEL CO , HITACHI LTD , HITACHI ENG CO LTD
发明人： INOUE NORIAKI , KATAYAMA JIRO , SATO KAZUYA , YONEYAMA TAKAO , HIRUOKA SHIYUUICHI , SAITO HIDETOSHI , MATSUURA MASAYUKI
IPC分类号： G01H17/00 , G01M13/04 , G01N29/04 , G01N29/14
摘要： PURPOSE:To accurately discriminate the signal due to the damage of a slide bearing and noise, by discriminating the frequency characteristics of a detected acoustic signal on the basis of the rotary frequency of a slide shaft. CONSTITUTION:Both ends of back-up rolls 4, 5 provided above and below work rolls 2, 3 are pivotally supported by slide bearings 4a, 4b, 5a, 5b. Acoustic sensors 6a, 6b detect an acoustic signal and the detection signals are detected by envelope detection circuits 8a, 8b through amplifiers 7a, 8b and only signals having frequency components higher than the rotary frequency components of the rolls 4, 5 are outputted from high-pass filters 10a, 10b. The reference values predetermined by energy comparing circuits 11b, 11d are compared with the energy values of filter output signals and, when the levels of the reference values are higher than that of the energy values, a display device 15b or 15c is lighted to inform the generation of radial surface damage.

4. 发明专利

JPS61198057A METHOD AND DEVICE FOR DIAGNOSING DAMAGE OF SLIDING BEARING FOR ROLLING MILL 失效
公开(公告)号：JPS61198057A
公开(公告)日：1986-09-02
申请号：JP3744485
申请日：1985-02-28
申请人： KAWASAKI STEEL CO , HITACHI LTD , HITACHI ENG CO LTD
发明人： INOUE NORIAKI , KATAYAMA JIRO , YONEYAMA TAKAO , HIRUOKA SHIYUUICHI , SATO KAZUYA , SAITO HIDETOSHI
IPC分类号： G01H17/00 , B21B31/07 , B21B33/00 , B21B38/00 , G01M13/04 , G01N29/00 , G01N29/14 , G01N29/42 , G01N29/44
摘要： PURPOSE:To detect a damage in its early stage and exactly by detecting a sound of a sliding bearing and comparing it with a set level, detecting a duration which has exceeded the set level, and also deciding it to be a damage, when it has exceeded a set time. CONSTITUTION:A sound of a sliding bearing 4 for supporting a backup roll which has been placed at the outside of a work roll 2 contacting directly to a rolling material 1 is detected by a transducer 9. Subsequently, its signal is processed by a filter 11, a detecting circuit 12 and an average value circuit 13 and applied to a comparing circuit 14, compared with a set level Eth, and inputted to a sliding bearing damage diagnosing circuit 15. Next, a duration of a sound which has exceeded Eth is detected, compared with a set time Te by a duration deciding circuit 16, and when it has exceeded Te, it is decided to be a damage of the bearing, and an alarm, etc. are operated. Accordingly, a malfunction caused by a noise, etc. is eliminated, and a damage of a thrust surface of the bearing can be detected in its early stage and exactly.

5. 发明专利

JPS61189315A DAMAGE DETECTOR FOR BEARING OF ROLLING MILL 失效
公开(公告)号：JPS61189315A
公开(公告)日：1986-08-23
申请号：JP2721785
申请日：1985-02-14
申请人： KAWASAKI STEEL CO , HITACHI LTD , HITACHI ENG CO LTD
发明人： INOUE NORIAKI , KATAYAMA JIRO , YONEYAMA TAKAO , SATO KAZUYA , HIRUOKA SHIYUUICHI , MATSUURA MASAYUKI , SAITO HIDETOSHI
IPC分类号： F16C19/52 , B21B31/07 , B21B33/00 , B21B38/00 , F16C17/24 , G01H17/00 , G01M13/04
摘要： PURPOSE:To early detect damage of every bearing by detecting a supersonic signal generated by damage of a bearing and discriminating same from noise according to a characteristic of the signal. CONSTITUTION:Back-up rolls 3a, 3b disposed outside work rolls 2a, 2b are supported by bearings 4a, 4b, 5a, 5b, and an acoustic sensor 10 is provided on the bearing 4b. An acoustic signal received by the acoustic sensor 10 is input to a filter 12 through an amplifier 11. Subsequently, the signal processed by an envelope detection circuit 13 is input to a continuous signal discrimination circuit 14 and a sudden signal discrimination circuit 15. The signal processed by the respective discrimination circuits is input to a bearing abnormality discrimination circuit 16. The bearing abnormality is discriminated by the bearing abnormality discrimination circuit 16 and the result is displayed.

6. 发明专利

JP2001317920A METHOD AND APPARATUS FOR MEASURING LENGTH OF CONVEYING MATERIAL 失效
公开(公告)号：JP2001317920A
公开(公告)日：2001-11-16
申请号：JP2000136899
申请日：2000-05-10
申请人： KAWASAKI STEEL CO
发明人： TAKEHISA OSAMU , KATAYAMA JIRO
IPC分类号： G01B11/04 , B21C51/00 , C21D1/00
摘要： PROBLEM TO BE SOLVED: To enable measurement of length with higher accuracy, regardless of difference in response speed between a photoelectric sensor and a CCD camera, even when the scanning cycle of the CCD camera is delayed. SOLUTION: A CCD camera 22 is made to scan a plurality number of times, before and after the detection timing of a photoelectric sensor 20, and the conveying speed of a conveying material 12 is computed from the image obtained and the period of the scanning. The time delay, until the detection of the position of the other end thereof with a CCD camera after the generation of a photoelectric sensor detection signal, is corrected using the resultant conveying speed.

7. 发明专利

JP2001255136A ON-LINE MEASURING ACCURACY INSPECTING METHOD FOR WIDTH AND LENGTH MEASURING INSTRUMENTS 失效
公开(公告)号：JP2001255136A
公开(公告)日：2001-09-21
申请号：JP2000068898
申请日：2000-03-13
申请人： KAWASAKI STEEL CO
发明人： KATAYAMA JIRO
IPC分类号： G01B11/02 , B21B39/20 , B21C51/00 , G01B11/04 , G01B21/02 , G01B21/06
摘要： PROBLEM TO BE SOLVED: To enable measurement accuracy reliability and on-line self-diagnostics of a width and length measuring instrument that measure the width and the length dimensional shape of a hot steel sheet with a thick plate, for there is no measurement method with high performance available. SOLUTION: This method compares the width dimensions, immediately before a 90 deg. turn with the length dimension, to that immediately after the 90 deg. turn, and the length dimension, immediately before the 90 deg. turn with a width the dimension immediately after the 90 deg. turn.

8. 发明专利

JP2536970B2 失效
公开(公告)号：JP2536970B2
公开(公告)日：1996-09-25
申请号：JP5779391
申请日：1991-02-28
申请人： KAWASAKI STEEL CO
发明人： KATAYAMA JIRO
IPC分类号： B21C51/00 , G01B11/06 , G01B15/02 , G01B21/08

9. 发明专利

JPH06317564A METHOD AND APPARATUS FOR DETECTION OF UNDETECTED STATE OF FLAW BY FLUX LEAKAGE DETECTION MACHINE 失效
公开(公告)号：JPH06317564A
公开(公告)日：1994-11-15
申请号：JP6170093
申请日：1993-03-22
申请人： KAWASAKI STEEL CO , KRAUTKRAEMER JAPAN
发明人： KATAYAMA JIRO , OGAWA TAKAYA , OGIWARA TAKAAKI
IPC分类号： G01N27/83
摘要： PURPOSE:To prevent a material from being judged as acceptable even when its flaw has not been sensed yet and to guarantee a quality with high reliability by a method wherein the noise level of a flaw detection signal generated during a flaw-detection inspection is compared with a reference monitoring-signal level which has been set arbitrarily. CONSTITUTION:When a magnetic flux generated by an exciting yoke installed on a rotor is passed through a round steel bar, a leakage flux is generated when a flaw exists on the surface. The leakage flux is detected by a probe unit 12 having a structure in which the round steel bar is pressed by an arm, a spring and the like, and the flaw on the surface is detected. When the probe unit 12 is separated and levitated from the round steel bar due to any problem in the arm, the spring and the like for the probe unit 12, a flaw-detection analog voltage signal 28 becomes nearly zero. Then, a flaw-undetected-state detection apparatus 32 which detects the levitation of the probe unit 12 so as to sense an undetected state of a flaw is installed, the levitation of the probe unit 12 and the cutoff state of a signal line 22 can be always monitored during a flaw detection, and a problem that even a material whose flaw has not been sensed is judged to be a good material is solved.

10. 发明专利

JPH04274805A SELECTING USE METHOD FOR SHEARING EQUIPMENT FOR THICK STEEL PLATE 失效
公开(公告)号：JPH04274805A
公开(公告)日：1992-09-30
申请号：JP3269991
申请日：1991-02-27
申请人： KAWASAKI STEEL CO
发明人： KATAYAMA JIRO
IPC分类号： B21B15/00 , B23C3/12 , B23D19/06
摘要： PURPOSE:To compare and select the side shear and the edge miller with higher processing capacity with respect to plate thickness and the shear amount by the shear amount calculated from shape information and finish dimensions after rolling. CONSTITUTION:In a thick steel plate manufacturing line provided with two kinds of shearing equipments of a side shear and an edge miller in the same line, a shape of a steel plate at the time point of rolling end is measured between a rolling mill and the shearing equipment in the line, and by comparing it with target finish dimensions, the shear amount is calculated. Subsequently, the processing efficiency of the side shear and the edge miller to thickness of the steel plate and the shear amount is compared, and the shearing equipment of higher efficiency is selected by a shearing equipment selecting device 8. In such a way, the yield of a product and the production efficiency can be improved.

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