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1. 发明专利

JP2646900B2 失效
公开(公告)号：JP2646900B2
公开(公告)日：1997-08-27
申请号：JP19655691
申请日：1991-08-06
申请人： NIPPON KOKAN KK
发明人： TOYOFUKU TATSUO , YAMAMOTO MASAHARU , TANAKA HAJIME
IPC分类号： B21B37/00 , G05B13/02 , G06F15/18 , G06G7/60 , G06N3/00 , G06N99/00

2. 发明专利

JPH0538511A DETERMINING METHOD FOR DRAFT SCHEDULE OF TANDEM ROLLING MILL 失效
公开(公告)号：JPH0538511A
公开(公告)日：1993-02-19
申请号：JP19655691
申请日：1991-08-06
申请人： NIPPON KOKAN KK
发明人： TOYOFUKU TATSUO , YAMAMOTO MASAHARU , TANAKA HAJIME
IPC分类号： B21B37/00 , G05B13/02 , G06F15/18 , G06G7/60 , G06N3/00 , G06N99/00
摘要： PURPOSE:To easily determine a draft schedule, and to execute a stable opra-tion by learning an operator set value of the draft schedule by using a multi-layer neural network. CONSTITUTION:An operator set value of a draft schedule is bared by using a multi-layer neural network. Subsequently, by using the learned multi-layer neural network, a rolling condition of a target stock to be rolled is recognized, and from a result of its recognition, the draft schedule is determined.

3. 发明专利

JPH0292411A METHOD FOR CONTROLLING COLD TANDEM ROLLING MILL 失效
公开(公告)号：JPH0292411A
公开(公告)日：1990-04-03
申请号：JP24648288
申请日：1988-09-30
申请人： NIPPON KOKAN KK
发明人： KOSHIRO JUNJI , IZUSHI TOMOYA , IWATO SHUICHI , SEIKE TAKAYA , FUKUDA MAKOTO , YAMAMOTO MASAHARU
IPC分类号： B21B1/28 , B21B37/00 , B21B37/18 , B21B37/48
摘要： PURPOSE:To prevent shape defects of a product by controlling a rolling load in the final stand to be nearly constant by adjusting a drafting position in the final stand and controlling a back tension in the final stand to be nearly constant by roll rotating speed adjustment of the stand just before the final stand. CONSTITUTION:Rolling is performed by using work rolls having a high frictional coefficient in the final stand (4th stand) 4 of a cold tandem rolling mill. A drafting position in the final stand 4 is controlled to be nearly constant by a rolling load meter 7D, etc. A back tension in the stand 4 is controlled to be nearly constant by adjusting roll rotating speed of a (3rd) stand 3. The back tension in the stands 2, 3 is controlled to be nearly constant by adjusting the drafting positions thereof except the 1st stand 1 and the final stand 4. A sheet thickness of a product is controlled by adjusting roll rotating speeds in stands except final two stands. Hence, shape defects of the product is prevented.

4. 发明专利

JPS6268620A ROLLING CONTROL METHOD FOR COLD ROLLING MILL 失效
公开(公告)号：JPS6268620A
公开(公告)日：1987-03-28
申请号：JP21051185
申请日：1985-09-24
申请人： NIPPON KOKAN KK
发明人： KODOI AKIO , NISHIMURA HIROSHI , YAMAMOTO MASAHARU , TAKAKURA NOBUO
IPC分类号： B21B37/18 , B21B37/00 , B21B37/68 , B21B37/72
摘要： PURPOSE:To prevent meandering of a strip and to improve the plate passing ability by adjusting at least one of leveling, bender, roll shift, and draft distribution of a rolling mill based on a plate thickness distribution measured at the inlet side of a cold rolling mill. CONSTITUTION:A 5-stand-cold rolling mill detects a plate thickness distribution in the lateral direction of a steel plate 10 by using a plate thickness profile meter 21 set at the inlet side of the 1st stand 1 and predicts the sectional profile of the plate 10 in the outlet side of the 5th stand 5 based on the above detected result. Then, one of leveling, bender, roll shift amount, and draft balance of the rolling mill is set at an optimum value based on the predicted sectional profile and cold rolling of the plate 10 is performed. This method prevents meandering of strips and improves plate passing ability remarkably.

5. 发明专利

JPS6235210A PLATE THICKNESS MEASURING INSTRUMENT FOR HOT ROLLED STEEL PLATE 失效
公开(公告)号：JPS6235210A
公开(公告)日：1987-02-16
申请号：JP17505485
申请日：1985-08-09
申请人： NIPPON KOKAN KK
发明人： IKEGAMI KAZUNARI , KURIHARA TAKESHI , YAMAMOTO MASAHARU , KODOI AKIO , MASUDA KENICHI
IPC分类号： G01B11/06 , B21B37/18
摘要： PURPOSE:To enable the measurement in small size with high accuracy by using the first and second distance meters utilizing a laser beam source and by subtracting the distance between the steel plate face and distance meter of the case of interposing the steel plate from the distance between the distance meters of the case of interposing no steel plate between the distance meters. CONSTITUTION:In the hot rolling stage a steel plate 10 is transferred on a roller table 12 and the plate thickness measuring instrument 14 to measure the thickness of the steel plate 10 is provided freely movably in the direction intersecting at right angles with the transfer direction of the steel plate 10. A frame 40 is stored in the housing 47 of the instrument 14 and distance meter 26, 28 is fitted to the frame 40. A laser beam source 30 and image sensor 32 are provided on the distance meter 26 to measure the distance L1 upto the back face of the steel plate. The distance meter 28 is made similarly as well and the distance L2 upto the back face of the steel plate is measured. An arithmetic unit 52 subtracts the distance L1, L2 from the distance Th between the distance meters 26, 28 prior to the steel plate being transferred and the plate thickness measurement in small size with high accuracy can be performed.

6. 发明专利

JPS61219822A ROLLING ROLL DISPLACEMENT CORRECTING APPARATUS IN MEASUREMENT OF ROLLING ROLL PROFILE 失效
公开(公告)号：JPS61219822A
公开(公告)日：1986-09-30
申请号：JP6234785
申请日：1985-03-27
申请人： NIPPON KOKAN KK
发明人： KUBOYAMA KIYOSHI , TAKAKURA NOBUO , YAMAMOTO MASAHARU , KODOI AKIO , NAKAMURA TAKETO , MASUDA KENICHI
IPC分类号： G01B21/00 , B21B28/00 , B21B28/04 , B21B38/12 , G01B7/287 , G01B7/34 , G01B21/20
摘要： PURPOSE:To accurately correct the detected displacement quantity of a profile displacement sensor by minimizing the number of displacement sensors, by correcting the detecting moving quantity of the profile displacement sensor on the basis of the moving quantity of the displacement sensor provided in the vicinity of both end parts supporting a rolling roll. CONSTITUTION:First and second displacement sensors 20, 21 for respectively detecting the displacement quantities between a rolling roll 10 and said sensors 20, 21 are arranged in the vicinity of both end parts supporting the rolling roll 10. Not only the detected moving quantities from said displacement sensors 20, 21 but also the detected displacement quantity from a profile displacement sensor 13 are introduced into a correction operation part 22 and said detected moving quantities are corrected on the basis of the arrangement position of the profile displacement sensor 13. This correction results are added to a profile display part 23 and the profile of the rolling roll 10 is operated on the basis of the corrected detected displacement quantities and displayed.

7. 发明专利

JPH05169102A MANUFACTURE OF METAL HOOP 失效
公开(公告)号：JPH05169102A
公开(公告)日：1993-07-09
申请号：JP33380591
申请日：1991-12-18
申请人： NIPPON KOKAN KK
发明人： KOSHIRO JUNJI , TANAKA HAJIME , YAMAMOTO MASAHARU , ONO NARIYUKI
IPC分类号： B21B1/22 , B21B37/24
摘要： PURPOSE:To make the sleeve for using at the inner diameter of coil needless and to reduce the cost of manufacture by rolling the sheet thickness of the prescribed length from the cutting point thicker than the thickness of products at the time of rolling metal hoop. CONSTITUTION:At the succeeding stock 21 of coil after rolling, the prescribed distance LA from the joining point A of the preceding stock with the succeeding stock until the succeeding B point is set thicker than the original thickness of products. For example, at the case of 0.3mm thickness of products, the thickness of sheet is set by 0.45mm. In such a way, the sheet thickness of succeeding stock 21 is rolled thicker than the original thickness of products between the prescribed distance LA from the cutting point A. At the point B that the succeeding stock is rolled by the prescribed distance LA, the set of sheet thickness is made to the original sheet thickness of the succeeding stock.

8. 发明专利

JPH04232300A ELECTROLYTIC SURFACE TREATING DEVICE 失效
公开(公告)号：JPH04232300A
公开(公告)日：1992-08-20
申请号：JP41542990
申请日：1990-12-28
申请人： NIPPON KOKAN KK
发明人： MURAYAMA GENZO , KOBAYASHI ISAO , YAMAMOTO MASAHARU , YOSHIOKA OSAMU , SHIMADA TAKASHI
IPC分类号： C25F7/00
摘要： PURPOSE:To prevent the generation of damage on the surface of a steel strip and a flaw on a roll with arc caused by passing current conducting the steel strip by disposing grounding rolls for leakage current from an electrolytic vessel at an inlet side and an outlet side in an electrolytic vessel for steel strip. CONSTITUTION:The steel strip X passes through an alkali dip washing vessel 4 and is introduced into the electrolytic vessel 6 through a first brushing scrubber 5, and by conducting the electric current with electrodes 60a-60d, 61a, 61b and 62a-62d, the surface of steel strip X is electrolitically washed and again introduced into a rising vessel 8 through a second brushing scrubber 7, and after water-washing, this is dried with a dryer 9 and taken out. In this case, as the leakage current is developed at front and rear parts of the electrolytic vessel 6, the rolls 23a-23g for turning over the direction of steel strip X in the electrolytic vessel 6 are made of an electrical insulting rubber and also by grounding the rolls 10, 11 in the alkali dip washing vessel 4 and outlet side roll 12 in the dryer 9, it is prevented to generate the arc between the surface of steel strip X and the rolls 10-12, and the damage of steel strip and rolls with the arc is prevented.

9. 发明专利

JPH02268914A METHOD FOR CONTROLLING THICKNESS IN COLD CONTINUOUS ROLLING MILL 失效
公开(公告)号：JPH02268914A
公开(公告)日：1990-11-02
申请号：JP8929989
申请日：1989-04-07
申请人： NIPPON KOKAN KK
发明人： NABE SHIGEKI , YAMAMOTO MASAHARU , ONO NARIYUKI , KOBAYASHI ISAO , SHIRAISHI KAORU , NAKAYAMA YASUTOSHI
IPC分类号： B21B37/18 , B21B37/26 , B21B37/72
摘要： PURPOSE:To improve the coiling property in a coiler and to improve the passing property in the following stage by rolling the neighborhood of the cutting point of a strip to the thickness larger than an indicated value. CONSTITUTION:In the preceding material 20 of a rolled coil, the target plate thickness is set at a value larger than an indicated value at point A ahead by a prescribed length (1a) of point B. Consequently, the preceding material 20 and the succeeding material 21 are rolled to a thickness larger than a value indicated near the cutting point B. At point C obtained by rolling the succeeding material 21 by a prescribed length (1b), the sheet thickness is set to the thickness of a product of the succeeding material 21. Accordingly, when the strip is rolled slightly thickly before and behind the cutting position, the preceding material 20 of the coil increases in thickness and rigidity, and the coiling property in a coiler is improved and the passing property in the following stage is improved.

10. 发明专利

JPS6268619A ROLLING CONTROL METHOD FOR HOT ROLLING MILL 失效
公开(公告)号：JPS6268619A
公开(公告)日：1987-03-28
申请号：JP21051085
申请日：1985-09-24
申请人： NIPPON KOKAN KK
发明人： KODOI AKIO , NISHIMURA HIROSHI , YAMAMOTO MASAHARU , TAKAKURA NOBUO
IPC分类号： B21B37/18
摘要： PURPOSE:To correct a camber of a hot rolling stock and to improve plate passing ability by adjusting at least one of leveling, bender, roll shift, and draft distribution of a rolling mill based on a plate thickness distribution measured at the inlet side of a finishing rolling mill. CONSTITUTION:A 7-stand-hot-finishing rolling mill detects a plate thickness distribution in the lateral direction of a rolling stock 10 using a plate thickness profile meter 21 set at the inlet side of the 1st stand 1 and predicts a sectional profile of the stock 10 in the outlet side of the 7th stand 7 based on the above detected result. Then, at least one of leveling, bender, roll shift amount, and draft balance of the rolling mill is set at an optimum value based on the predicted sectional profile and finishing rolling of the stock 10 is performed. This method corrects a camber of rolling stocks and improves plate passing ability remarkably.

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