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1. 发明专利

JPS56114514A CONTROLLER FOR CONTINUOUS ROLLING MILL 失效
公开(公告)号：JPS56114514A
公开(公告)日：1981-09-09
申请号：JP1802880
申请日：1980-02-16
申请人： NIPPON STEEL CORP , MITSUBISHI ELECTRIC CORP
发明人： NAKASHIMA OKINORI , KODERA YOSHIKAZU , TOGANOU HIDEHARU
IPC分类号： B21B37/00 , B21B37/26
摘要： PURPOSE:To accurately carry out the rolling work of a single blank maerial for changing thickness, by computing the mass flow of the rolled material in the first rolling stand before changing the thickness, by comparing this mass flow with the specified value, and by determining the timing of starting the alteration of the screw position depending on above comparison, at carrying out the rolling work changing the thickness of traveling strip. CONSTITUTION:At carrying out the rolling work changing the thickness of the traveling strip, the thickness computer 14 computes the run-out side thickness from the screw position signal sent from the screw position controller 13 and the load signal sent from the load detector 15. The controller 8 for the thickness changing rolling work computes the rolled material's mass flow from above computed run-out side thickness and the rolling speed detected by the rolling speed detector 17, compares this mass flow with the specified value, and determines the timing of starting the alteration of the screw position. This alteration of the screw position is given as the command to the screw position controller 13. According to the present mechanism, the starting point of altering the screw position of all rolling stands can be made coincide with the starting point of changing the thickness, so that the operation of the rolling mill stabilizes.

2. 发明专利

JPS56114520A CONTROLLER FOR COILING TEMPERATURE OF STRIP ROLLED BY THICKNESS CHANGEABLE STRIP MILL 失效
公开(公告)号：JPS56114520A
公开(公告)日：1981-09-09
申请号：JP1741480
申请日：1980-02-15
申请人： MITSUBISHI ELECTRIC CORP , NIPPON STEEL CORP
发明人： KODERA YOSHIKAZU , WATANABE FUMIO , TOGANOU HIDEHARU , NAKASHIMA OKINORI , KONISHI SEIJI
IPC分类号： B21B37/74 , B21B37/00 , B21B37/76
摘要： PURPOSE:To stabilize the quality of a product, by ensuring a aim mechanical property overall the length of the thickness changed product, and by positively controlling the coiling temperature, at carrying out a finish rolling work accompanying a thickness changing process. CONSTITUTION:The adjustment for the screw position and the adjustment for the rolling speed, for changing the thickness, are computed by the thickness changing process computer 1, and are inputted to the screw position controller 5 and the speed controller 4. At the same time, the rolling speed detector 6 detects the rolling speed V of the final finishing stand; this rolling speed V is corrected by multiplying the forward slip phi, and is integrated; the result of this integration is compared with the distance Ln between each of the water spray sections and the roll center of the final finishing stand, as shown by the formula. Hereby, the arrival of strip at each section of the hot run table is successively tracked in order to determine the timing of starting the adjustment of the sprayed water rate. Besides, the adjustment of the sprayed water rate is started just before the thickness change starting point enters the n-th section, and is completed just before the thickness change ending point passes over the n-th section, as shown in the figure.

3. 发明专利

JPS56114523A SPEED CONTROL METHOD FOR CONTINUOUS ROLLING MILL 失效
公开(公告)号：JPS56114523A
公开(公告)日：1981-09-09
申请号：JP1741080
申请日：1980-02-15
申请人： MITSUBISHI ELECTRIC CORP , NIPPON STEEL CORP
发明人： WATANABE FUMIO , TOGANOU HIDEHARU , KODERA YOSHIKAZU , NAKASHIMA OKINORI
IPC分类号： B21B37/48 , B21B37/00 , B21B37/46 , B21B37/50
摘要： PURPOSE:To constantly control the flow of the material to be rolled between stands in a feed forward manner by positively detecting the interstand tension fluctuations owing to rolling condition fluctuations and the mass flow fluctuations that become the case for loop amount fluctuations with an AGC and the like and stably and rapidly absorbing the fluctuations of mass flow. CONSTITUTION:The screw-down position Si detected 31 with the i-th stand 21 and the detected 41 rolling force Fi are inputted to an outlet side thickness operating device 51, which operates the thickness hi by the equation I. Similarly, the oulet side thickness hi-1 of the i-1st stand is operated 101, and the equivalent inlet side thickness HiF is calculated according to the equation II. The abovementioned rolling force Fi and the position Si are inputted to an equivalent outlet side thickness operating device 201, which in turn operates the equivalent oulet side thickness hiF. The abovementioned thickness HiF and thickness hiF are inputted to a speed correction amount operating device 71. The device 71 operates and stores physical quantity at an arbitrary time after the material 1 to be rolled is bitten into a stand 22, and operates the roll speed correction amount of the stand 21 against the fluctuations in the subsequent rolling conditions thereby absorbing the fluctuations in the mass flow of the material 1 between the stands 21 and 22.

4. 发明专利

JPS56114521A CONTROLLER FOR TEMPERATURE OF STRIP ROLLED BY THICKNESS CHANGEABLE STRIP MILL 失效
公开(公告)号：JPS56114521A
公开(公告)日：1981-09-09
申请号：JP1741580
申请日：1980-02-15
申请人： MITSUBISHI ELECTRIC CORP , NIPPON STEEL CORP
发明人： KODERA YOSHIKAZU , WATANABE FUMIO , TOGANOU HIDEHARU , NAKASHIMA OKINORI , KONISHI SEIJI
IPC分类号： B21B37/74 , B21B37/00 , B21B37/76
摘要： PURPOSE:To ensure an aimed finishing temperature of a strip, and to stabilize the product quality, by previously computing the thickness variation in each stand, and by adjusting the water rate sprayed between the stands depending on the variation of mass flow caused by above computed thickness variation, at changing thickness while continuing a hot rolling work. CONSTITUTION:The thickness change computer 1 computes information for changing thickness in the finish rolling work (the adjustment of screw position, the adjustment of rolling speed, and the timing of thickness change), and inputs these data to the screw position controller 3 and the speed controller 4. At the same time, the thickness changing point is tracked between each stand and the timing of spraying water between the stands are determined. Hereupon, the interstand cooling computer 2 receives the thickness variation, the speed variation and the timing of water spray from the computer 1. Then the computer 2 determines the spraying water rate from the variation of mass flow caused by the thickness change and the feed-in side temperature at the finishing stand; this water rateis sprayed on above determined timing. The thermometer 6 installed on the run-out side of the finishing stand effects the feed-back control against the aim temperature on the run-out side of the finishing stand.

5. 发明专利

JPS55142224A DETECTION METHOD OF TENSION 失效
公开(公告)号：JPS55142224A
公开(公告)日：1980-11-06
申请号：JP5048879
申请日：1979-04-24
申请人： NIPPON STEEL CORP , MITSUBISHI ELECTRIC CORP
发明人： NAKASHIMA OKINORI , WATANABE FUMIO , HAMAZAKI YOSHIHARU , TOGANOU HIDEHARU
IPC分类号： B21B37/48 , B21B37/00 , B21B38/06
摘要： PURPOSE:To enable highly-accurate detection, by estimating coefficients for calculating the fluctuation in a torque arm, from the incoming plate thickness, outgoing plate thickness, rolling force and measured torque arm in real rolling. CONSTITUTION:The fluctuations DELTAHiM, DELTAhiM, DELTAPiM, aiM-aiLin the in coming plate thickness, outgoing plate thickness, rolling force and torque arm at an i-th stand 2 from the time of locking-on before the biting-in of a rolled material 1 into an (i+1)- th stand 3 are used to compute torque arm fluctuation coefficients K1, K2, K3 by a calculator 15. After the rolled material 1 is bitten into the stand 3, the coefficients K1-K3, the fluctuations DELTAHi, DELTAhi, DELTAPi in the incoming plate thickness, outgoing plate thickness and rolling force at the stand 2 from the time of locking-on and the locking-on arm torque arm aiL are used to perform computation by another calculator 50. The torque arm ai and the rolling torque Gi, rolling force Pi and rear tension Ti-1 at the stand 2 are used to determine tension Ti by another calculator 60. Data on real rolling are thus used to perform estimation to attain high accuracy.

6. 发明专利

JPS56117809A CONTROLLING METHOD FOR ROLLING WORK OF CONTINUOUS ROLLING MILL 失效
公开(公告)号：JPS56117809A
公开(公告)日：1981-09-16
申请号：JP1938880
申请日：1980-02-19
申请人： NIPPON STEEL CORP , MITSUBISHI ELECTRIC CORP
发明人： NAKASHIMA OKINORI , KONISHI SEIJI , KODERA YOSHIKAZU , YOSHIDA FUMIO , TOGANOU HIDEHARU
IPC分类号： B21B35/02 , B21B37/00 , B21B37/22 , B21B37/26
摘要： PURPOSE:To maintain the product accuracy and the operational stability, by permitting calculated set, data for the screw position and the rolling speed to have some tolerance, when the kind of product is to be changed, at rolling a single blank material into two-kind products A and B. CONSTITUTION:In the case of manufacturing the products A and B by the rolling work possible to change the thickness and breadth of the traveling material, the set data for the screw position and rolling speed of the rolling work for the product A are resetted to values of the screw position and rolling speed of the rolling work for the product B. Hereupon, the set data for the screw position and rolling speed of the rolling work for each of products A and B are previously calculated for the same grade of steel and the same size of the blank material utilizing the same sheet temperature data and the same mill constant; by utilizing these result of computation for the product A, a learning correction and a manual set data correction are carried out before feeding the material to the mill; the result of these corrections are added to the result of computation for the product B when the product thickness is to be changed from that of product A to that of the product B, hereby, the set data for the rolling work for the product B are corrected. Or, the correction given to the set data during the rolling work for the product A is added to the calculated set data for the product B, and hereby, the set data for the product B are corrected. On the basis of these corrected data, the product thickness is changed.

7. 发明专利

JPS56111515A DISTRIBUTING METHOD FOR DRAFT PERCENTAGE IN CONTINUOUS ROLLING WORK 失效
公开(公告)号：JPS56111515A
公开(公告)日：1981-09-03
申请号：JP1442180
申请日：1980-02-08
申请人： MITSUBISHI ELECTRIC CORP , NIPPON STEEL CORP
发明人： KODERA YOSHIKAZU , WATANABE FUMIO , TOGANOU HIDEHARU , NAKASHIMA OKINORI , KONISHI SEIJI
IPC分类号： B21B37/00 , B21B37/24 , B21B37/26
摘要： PURPOSE:To stably, accurately carry out the uninterruptedly thickness changeable rolling work for a strip, by making the changing rate of draft percentage of the upstream side rolling stand larger than the changing rate of draft percentage of the downstream side rolling stand, at changing the thickness of the same strip undergoing a continuous rolling work. CONSTITUTION:At changing the thickness of a strip undergoing a continuous rolling work, the variation of draft percentage of each rolling stand is uniformly distributed according to the equation so as to generate the same amount of turbulence in the mass flow before and after the thickness change between every couple of rolling stands. Hereby, the distribution of draft percentage to each rolling stand after changing the sheet thickness is made largely part from that before changing the thickness, on the upstream side of the strip; whereas, it is made an associated value on the downstream side. As a result, an effect to further shorten the off-gauge length of the strip, other than a great improvement of the breadth accuracy, the shape, the operatability and the passableness of the strip, is developed during the uninterruptedly thickness changing rolling work.

8. 发明专利

JPS5633112A CONTROLLING METHOD FOR TENSION IN CONTINUOUS ROLLING DEVICE 失效
公开(公告)号：JPS5633112A
公开(公告)日：1981-04-03
申请号：JP10795179
申请日：1979-08-24
申请人： NIPPON STEEL CORP , MITSUBISHI ELECTRIC CORP
发明人： NAKASHIMA OKINORI , WATANABE FUMIO , HAMAZAKI YOSHIHARU , TOGANOU HIDEHARU
IPC分类号： B21B37/48 , B21B37/00 , B21B37/52
摘要： PURPOSE:To perform the effective tension control, by deciding the control gain correspondingly to the rolling schedule, the rolling mill characteristic, and the rolling condition at an arbitrary point of time during the rolling work, and by controlling the roll speed of each rolling mill. CONSTITUTION:At each rolling mill of the continuous rolling facilities possessing the wide rolling condition and the rolling mill characteristic, the influence factors alphai, betai, are obtained from the mean deformation-resistance K of the rolled material, the sheet breadth W, the mill constant M of the rolling mill, etc. From this result, the roll speed of each rolling mill is controlled by the control gain ki,i+1 depending on the characteristic of the control object to be obtained from the formula I at an arbitrary point of time during the rolling work.

9. 发明专利

JPS5626618A DETECTING METHOD FOR INTERSTAND TENSION IN CONTINUOUS ROLLING WORK 失效
公开(公告)号：JPS5626618A
公开(公告)日：1981-03-14
申请号：JP10299879
申请日：1979-08-11
申请人： MITSUBISHI ELECTRIC CORP , NIPPON STEEL CORP
发明人： HAMAZAKI YOSHIHARU , TOGANOU HIDEHARU , NAKASHIMA OKINORI
IPC分类号： B21B37/00 , B21B38/06
摘要： PURPOSE:To improve the titled detecting accuracy, when the front tension of the i-th stand is to be obtained from the rolling torque, the rolling load and the back tension, by changing the front and back torque arms after the lock-on correspondingly to the fluctuation of one or more physical quantities affecting the rolling torque and the rolling load. CONSTITUTION:The front tension Ti of the i-th stand 2 is obtained from the formula I. In which Pi is for the rolling load and Ti-1 is for the back tension. The rolling torque Gi is obtained from the formula II. That is, the back and front tension torque arms bi, ci, are the functions of the feed-in side and the run-out side sheet thickness Hi, hi, and the diameter Ri of the flat roll. Hereupon, since the value of the formula III is known, the above stated torque arms bi, ci, are obtained from the formulas IV, V. These variations DELTAbi, DELTAci, after the lock-on are obtained from the formulas VI, VII, similarly to the conventional case of the torque arm ai. Accordingly, above stated torque arms bi, ci, are operated depending on each formula by the arithmetic units 6, 7, other than the arithmetic unit 5, and the front tension Ti is obtained depending on the formula I by the front tension arithmetic unit 4.

10. 发明专利

JPS5592219A PLATE WIDTH CONTROL UNIT OF ROLLED MATERIAL 失效
公开(公告)号：JPS5592219A
公开(公告)日：1980-07-12
申请号：JP16303478
申请日：1978-12-28
申请人： MITSUBISHI ELECTRIC CORP
发明人： HAMAZAKI YOSHIHARU , WATANABE FUMIO , YOSHIDA FUMIO , FUSE KEIICHI , TOGANOU HIDEHARU
IPC分类号： B21B37/22 , B21B37/00
摘要： PURPOSE:To improve product plate width accuracy by controlling the plate width errors on the exit side of roughing mills by the tension between finishing stands through feed-forward controlling. CONSTITUTION:From the plate width detection values by a plate width detector 4, plate width errors are subsequently stored in a plate width deviation memory device 8 at the predetermined spacing from the leading end of the rolling material with a plate width error operating unit 7. The timing at which a certain portion of the rolling material arrives at each stand of the finishing mills is adjusted with a synchronizing device 9 and the plate width error of that portion having been stored in the memory device 8 is read out with a read-out unit 10. From this plate width error, the tension correction amount between the stands is operated with a tension correction amount operating unit 11 and the stand roll rotating speed correction amount is obtained by a stand roll rotating speed correction amount operating unit 14 and is inputted to a stand roll rotating speed control unit 15. Thereby, the tension between the stands is controlled to the target tension.

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