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1. 发明专利

JPS56117822A CONTROLLING METHOD FOR ROLLING WORK OF HOT ROLLING MILL 失效
公开(公告)号：JPS56117822A
公开(公告)日：1981-09-16
申请号：JP1909880
申请日：1980-02-20
申请人： NIPPON STEEL CORP , HITACHI LTD
发明人： TASHIRO KAZUYUKI , KONISHI SEIJI , TANIFUJI SHINYA , MOROOKA YASUO , UEKANE YOSHIHIRO
IPC分类号： B21B45/02 , B21B37/00 , B21B37/46
摘要： PURPOSE:To stably perform the rolling work on all occasions including the case of interrupted oil supply, by adjusting the speed of driving motor of the rolling roll corresponding to the variation of the oil supply to the rolling roll. CONSTITUTION:The oil feed controller 10 adjusts the feeding rate of oil by opening or closing the valve 9 and with the flow-control valve corresponding to the steel grade of the rolled material 3, the surface condition of the rolling roll, etc. The speed compensator 11, by whose discriminator 101 for discriminating the ON-OFF of the valve 9, receives the timing signal for ON-OFF of the valve 9 sent from the controller 10, and checks the rationality first of all, and next, determines the compensation value for the speed by the speed compensation operator 102. Next, the timing decider 103 decides the timing of producing the speed compensation value, and the output processor 104 processes the output of the speed compensation signal. The speed compensation signal, for the case of valve-ON after receiving the delay process of the decider 103, is inputted to the motor speed controller 6; the said signal for the case of valve-OFF is added to the speed compensation signal for the case of the valve-ON and is inputted to the motor speed controller 6. Accordingly, the mass flow fluctuation to be generated when the oil feeding rate is greatly changed is canceled, the tension fluctuation is depressed, and the stable rolling condition is realized.

2. 发明专利

JPS571508A TENSION CONTROLLER FOR HOT-LUBRICATED ROLLING WORK 失效
公开(公告)号：JPS571508A
公开(公告)日：1982-01-06
申请号：JP7423180
申请日：1980-06-04
申请人： NIPPON STEEL CORP , HITACHI LTD
发明人： TASHIRO KAZUYUKI , KONISHI SEIJI , TANIFUJI SHINYA , MOROOKA YASUO , UEKANE YOSHIHIRO
IPC分类号： B21B45/02 , B21B37/00 , B21B37/48 , C04B18/02
摘要： PURPOSE:To high accurately control the tension in a hot-lubricated rolling work, by correcting a torque arm correspondingly to a change in the oil feed rate, at changing the feed rate of the lubricant oil during the rolling work is operated by a tandem hot-rolling mill. CONSTITUTION:A material 1 is rolled while the lubricant oil is fed at a suitable timing from a lubricator 400; hereupon, the rolling load Pi detected by a load cell 5, the electric current Ii of a motor 4, its voltage Vi and rotational speed omegai, and the roll gap Si are inputted to a tension detector 200 included in a tension controller 100. The detector 200 computes the rolling torque and the torque arm from these inputted data, and obtains the tension value. When the feed rate of the lubricant oil from the lubricator 400 is to be changed, the torque arm to be used in computing the tension is corrected correspondingly to the changing rate of the oil feed rate; hereby, the tension can be computed with high accuracy. A controller 300 decides the corrective amount of the rotational speed of the motor 4 of each stand required in controlling the tension detected by the detector 200 to a preset aim value, and corrects the rotational speed of the motor 4 of each stand.

3. 发明专利

JPS56131009A CONTROLLING METHOD FOR TENSION OF ROLLING MILL 失效
公开(公告)号：JPS56131009A
公开(公告)日：1981-10-14
申请号：JP3406480
申请日：1980-03-19
申请人： NIPPON STEEL CORP , HITACHI LTD
发明人： KONISHI SEIJI , TASHIRO KAZUYUKI , TANIFUJI SHINYA , MOROOKA YASUO , UEKANE YOSHIHIRO , ASANO KAZUNORI
IPC分类号： B21B37/48 , B21B37/00 , B21B37/52 , G05B21/02
摘要： PURPOSE:To improve the detecting accuracy of tension and the accuracy of control through attenuating the noise of data, by alternately integrating and memorizing the data of rolling process at every prescribed time interval through using two sets of integrator, and by obtaining the weighted average of these stored data. CONSTITUTION:At a tandem type hot finish rolling process, the load data of each stand are detected and are inputted alternately to one of two integrators 83, 84 which are changed over by a timing-command circuit 88 at every prescribed time interval. The load data are next inputted to the A/D converters 89, 90 of the digital section 80b through an adder 87, and besides, are sent to an adder 98 through delay elements 91-93 and multipliers 94-97 of constant C1-4. Next, these data are divided by the reset time in order to obtain the weighted average. The tension is computed from these data, and this tension is made coincide with its aimed value by controlling the driving motor of each stand. The present method processes the data by the filtering process, so that the exact control for the thickness of plate can be performed.

4. 发明专利

JPS5820311A CONTROLLING METHOD FOR TENSION IN TANDEM ROLLING MILL 失效
公开(公告)号：JPS5820311A
公开(公告)日：1983-02-05
申请号：JP11907881
申请日：1981-07-31
申请人： NIPPON STEEL CORP , HITACHI LTD
发明人： TASHIRO KAZUYUKI , KONISHI SEIJI , UEKANE YOSHIHIRO , SAKURAI TAKAKAZU , TANIFUJI SHINYA , MOROOKA YASUO
IPC分类号： B21B37/48 , G05D15/00
摘要： PURPOSE:To perform a constant tension control highly accurately, by controlling the tension with the aid of process data excluding a working period of a shearing machine. CONSTITUTION:By neglecting data obtained within a period (the period in which the probability of generating the fluctuations of process data due to a shearing action is high) of HT output by a filter, data obtained just before the above mentioned HT output is outputted by a HT output of a hold-timing circuit 40. Thereby each unit 20, 30, 9, and 10 performs an operation basing on the data obtained just before the HT output during the period of the HT output. That is, said control is based on the computed results of the tension just before the HT output. Accordingly a stable action of controlling is realized without being affected by the significant fluctuations of process data due to the shearing action.

5. 发明专利

JPS571514A SAVING METHOD FOR ENERGY CONSUMPTION OF HOT ROLLING SYSTEM 失效
公开(公告)号：JPS571514A
公开(公告)日：1982-01-06
申请号：JP7423280
申请日：1980-06-04
申请人： NIPPON STEEL CORP , HITACHI LTD
发明人： TASHIRO KAZUYUKI , KONISHI SEIJI , TANIFUJI SHINYA , MOROOKA YASUO , SAKURAI TAKAKAZU , UEKANE YOSHIHIRO
IPC分类号： B21B1/00 , B21B1/22 , B21B1/26 , B21B27/10 , B21B37/00 , B21B45/00 , B21B45/02
摘要： PURPOSE:To reduce the heating temperature of a material to be rolled in order to save the fuel consumption of a heating furnace, by suitably controlling the feed rate of the rolling mill oil in practicing a hot rolling work with a hot rolling mill equipped with a rolling-mill-oil feeder. CONSTITUTION:At rolling a material to be rolled with a hot lubricated rolling line 100 provided with plural rolling stands, a setup device 300 computes the roll gap S, the rotational speed N of a work-roll-driving motor, the rolling power and the rolling load of each stand. On the other hand, an arithmetic controller 500 controls the fuel feed rate for a heating furnace 200 on purpose to make a controller 400 of the material heating furnace 200 control the material temperature at the outlet of the heating furnace 200 to an aimed temperature. Hereupon, the oil feed rate and the material temperature at the outlet of the heating furnace 200 are determined so as to satisfy the upper limit of the rolling power and the rolling load of the work roll of each rolling stand and the upper limit of the oil feed rate permissible the rolling work to be practiced; hereby, a hot lubricated rolling work is practiced with an oil feed rate causing the material temperature at the outlet of the heating furnace 200 to be the necessary lowest temperature.

6. 发明专利

JPS56117817A TENSION CONTROLLER 失效
公开(公告)号：JPS56117817A
公开(公告)日：1981-09-16
申请号：JP1909180
申请日：1980-02-20
申请人： NIPPON STEEL CORP , HITACHI LTD
发明人： KONISHI SEIJI , TASHIRO KAZUYUKI , UEKANE YOSHIHIRO , SAKURAI TAKAKAZU , TANIFUJI SHINYA , MOROOKA YASUO
IPC分类号： B21B37/48 , B21B15/00 , B21B37/00 , B21B37/52
摘要： PURPOSE:To control the tension in high accuracy, by removing an error of detection for the tension, occurring when a traveling sheet shear cuts a traveling sheet, at operating the tension from the data obtained from a filtering process applied to process data of a rolling work. CONSTITUTION:The titled tension controller is provided with a detector for detecting the process data of a rolling mill comprising plural rolling stands, and a filter circuit for filtering the process data detected by above detector; this tension controller operates the interstand tension from the process data filtered by the filter circuit, and controls thus operated interstand tension to the airmed value. At filtering the process data, the accuracy of detection for the tension is increased because the process data is kept at the value of the moment just before shearing the tail end of the sheet by the traveling sheet shear, during a period since the moment just before this shearing action until and moment just after finishing said action.

7. 发明专利

JPS571513A FEEDING METHOD FOR ROLLING MILL OIL TO CONTINUOUS HOT ROLLING MILL 失效
公开(公告)号：JPS571513A
公开(公告)日：1982-01-06
申请号：JP7423080
申请日：1980-06-04
申请人： NIPPON STEEL CORP , HITACHI LTD
发明人： TASHIRO KAZUYUKI , KONISHI SEIJI , UEKANE YOSHIHIRO , SAKURAI TAKAKAZU , MOROOKA YASUO , TANIFUJI SHINYA
IPC分类号： B21B45/02 , B21B1/26 , B21B27/10 , B21B37/00
摘要： PURPOSE:To stabilize the operation of the rolling work, by making the oil feed rate for a high-speed stand on the downstream side smaller than that for a low-speed stand on the upstream side, in practicing a hot lubricated rolling method wherein the lubricant oil is applied to the surface of the rolling rolls. CONSTITUTION:At rolling a material 3 to be rolled with plural rolling stands respectively constituted of a work roll 1 and a backup roll 2, the lubricant oil is fed from a nozzle 8 by opening an on-off valve 9 a prescribed time after the material 3 is bitten by each stand, and the oil feed is stopped by closing the valve 9 a prescribed time before the tail end of the material 3 drops out of the stand concerned. On the other hand, before starting a rolling work, an overall command device 7 presets the roll speed, the thickness and breadth of a material to be rolled, in an oil feed rate controller 12. The oil feed rate controller 12 decides the feed rate of the oil to be supplied, and controls an oil flow rate control valve 11 so as to make the oil feed rate for a down-stream stand smaller than that for an upstream stand; hereby, an instability of the rolling operation apt to cause in downstream stands of the rolling mill is prevented and the rolling work is stably operated.

8. 发明专利

JPS571507A TENSION CONTROLLER FOR CONTINUOUS HOT ROLLING MILL 失效
公开(公告)号：JPS571507A
公开(公告)日：1982-01-06
申请号：JP7422980
申请日：1980-06-04
申请人： NIPPON STEEL CORP , HITACHI LTD
发明人： KONISHI SEIJI , TASHIRO KAZUYUKI , UEKANE YOSHIHIRO , SAKURAI TAKAKAZU , MOROOKA YASUO , TANIFUJI SHINYA
IPC分类号： B21B45/02 , B21B37/00 , B21B37/48
摘要： PURPOSE:To restrict the tension fluctuation owing to the fluctuation of the coil feed rate or the concentration, by suitably correcting the compensating gain for the deviation of the tension value computed by a tension computer from the aimed tension value. CONSTITUTION:A tension computer 4 detects an interstand tension Ti from the electric current, voltage and rotational speed of a motor 6 driving a rolling roll of each stand, the rolling load and the roll gap; a speed compensating controller 5 applies a compensation process in at least one or more of proportional, integral and differential modes to the deviation of the tension Ti from the aimed tension value Toi. On the other hand, a valve 10 is opened to start the oil feed a prescribed time after the material 3 is bitten by each stand, and the valve 10 is closed a prescribed time before the tail end of the material 3 drops out of the stand. The oil feed rate is controlled by a flow rate controller 12, and an oil feed rate controller 11 decides the flow rate to be commanded. A gain corrector 13 corrects the said speed compensating gain correspondingly to the deviation from the set oil feed rate decided by the controller 11; the speed compensating controller 5 uses the corrected control gain for controlling the motor 6 through a speed controller 7.

9. 发明专利

JPS56131008A COMPENSATING METHOD FOR SETUP OF HOT LUBRICATED ROLLING WORK 失效
公开(公告)号：JPS56131008A
公开(公告)日：1981-10-14
申请号：JP3406580
申请日：1980-03-19
申请人： NIPPON STEEL CORP , HITACHI LTD
发明人： TASHIRO KAZUYUKI , KONISHI SEIJI , TANIFUJI SHINYA , MOROOKA YASUO , UEKANE YOSHIHIRO
IPC分类号： B21B37/00
摘要： PURPOSE:To accurately determine the set points of roll gap and a roll speed for performing the rolling work, by correcting the roll gap and the rotational speed of roll computed by the setting-up function ion on the basis of the variation of mass- flow obtained from the programmed rate of lubricant supply. CONSTITUTION:The setup computer 12 computes the roll gap and the rotational speed of roll under an oilless condition or a poorly lubricated condition. Next, the variation of the rolling load is computed on the basis of the programmed rate of lubricant supply, and the roll gap computed by the setup compensator 13 is corrected. Besides, the new roll speed is computed correspondingly to the variation of the value of mass-flow on the basis of the amount of used lubricant. This roll gap's set point is inputted to the roll gap adjuster 6, and the set point of the motor speed corresponding to the corrected rotational speed of roll is inputted to the speed controller 8. By this setup compensating method, the balance between the mass-flow of every stand is attained so that the breadth fluctuation, etc., at neighborhood of the tip of the rolled material is prevented.

10. 发明专利

JPH0325243B2 失效
公开(公告)号：JPH0325243B2
公开(公告)日：1991-04-05
申请号：JP2269384
申请日：1984-02-09
申请人： HITACHI LTD
发明人： UEKANE YOSHIHIRO
IPC分类号： B21B1/26 , B21B37/00 , B21B37/46 , B21B37/52

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