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1. 发明专利

JPS55109510A SHAPE CONTROL UNIT IN ROLLING 失效
公开(公告)号：JPS55109510A
公开(公告)日：1980-08-23
申请号：JP1528079
申请日：1979-02-13
申请人： NIPPON STEEL CORP , ISHIKAWAJIMA HARIMA HEAVY IND
发明人： KIZAKI KANJI , HARA TSUTOMU , HONJIYOU HISASHI , EMORI TAKASHI , TERAKAWA MASATOMO , TAKASHIMA YOSHIAKI , KAMATANI AKIHIRO
IPC分类号： B21B37/38 , B21B37/00
摘要： PURPOSE:To obtain constant good shape despite of the change of draft percentage, by changing the bending force in order to correct the change of the crown. CONSTITUTION:The crown computer B computes the exit side crown ratio of the first stand, and the bending force of following each stand required for obtaining above stated crown ratio. Thus obtained bending force of each stand is transmitted to the roll bender D by the bending force controller C, and the distorsion of the roll of each stand is controlled. After the rolling condition is settled as stated above, the roll bending force is set in each stand. If the distribution of draft percentage is changed while operating the rolling work, or if the actual rolling load differs from the computed rolling load, the actual rolling load detector E detects the rolling load, and the detected value is transmitted to the crown computer B which then computes the bending force; this bending force is transmitted from the bending force controller C to the roll bender D. That is, the change of crown, being caused owing to the difference between the computed rolling load and the actual rolling load, is corrected by changing the bending force.

2. 发明专利

JPS55109502A ROLLING METHOD 失效
公开(公告)号：JPS55109502A
公开(公告)日：1980-08-23
申请号：JP1528179
申请日：1979-02-13
申请人： NIPPON STEEL CORP , ISHIKAWAJIMA HARIMA HEAVY IND
发明人： KIZAKI KANJI , HARA TSUTOMU , HONJIYOU HISASHI , EMORI TAKASHI , TERAKAWA MASATOMO , TAKASHIMA YOSHIAKI , KAMATANI AKIHIRO
IPC分类号： B21B1/26 , B21B37/00
摘要： PURPOSE:To suitably control the sheet crown of the rolled material, and to manufacture beautifully shaped sheet, by increasing the draft percentage of the final stand in order to increase the controlled variable of the crown, and at the same time, by executing the shape control for the crown. CONSTITUTION:The data control block (DCB) is installed in five stands F2- F6 of the finishing mill group consisting of illustrated six stands F1-F6, and the crown is controlled to the range from maximum increase to maximum decrease; in this case, the variation of crown ratio is expressed as follows. That is, the controllability for the sheet crown is governed by the crown controllability of F6. Accordingly, the crown controllability can be greatly increased by increasing the draft percentage of F6. Besides, in this method, the draft percentage of F6 is increased in order to increase the controlled variable of the crown, and also, the shape control is carried out simultaneously with the crown control. That is, the crown control unit of the F6 stand is actuated so as to make the relation between the crown ratio C0 on the exit side of F6 and the crown ratio C1 on the entry side of F6, to be ¦C0-C1¦

3. 发明专利

JPS5592217A METHOD AND APPARATUS FOR PLATE CROWN CONTROL IN CONTINUOUS ROLLING MILL 失效
公开(公告)号：JPS5592217A
公开(公告)日：1980-07-12
申请号：JP16349978
申请日：1978-12-28
申请人： ISHIKAWAJIMA HARIMA HEAVY IND , NIPPON STEEL CORP
发明人： KIZAKI KIYOSHI , HARA TSUTOMU , EMORI TAKASHI , HONJIYOU HISASHI , TERAKAWA MASATOMO , TAKASHIMA YOSHIAKI , KAMATANI AKIHIRO
IPC分类号： B21B37/38 , B21B37/00
摘要： PURPOSE:To increase plate crown control amount and improve quality by cooperatively performing pressure controlling of the double chock work roll bending devices provided to plural stands while maintaining a fixed ratio in the same direction. CONSTITUTION:Pressure oil is supplied via line 8 to the double chock work roll bending devices 7 provided to stands. A controller (operator) 13 which operates pressure so as to permit plate crown controlling in shape blind zone from control information 14 is provided and the pressure ratio of every stand is set in each pressure setter 12 based on the command from the controller 13. Based on this set ratio, pressure regulators 9 are operated from the pressure setters 12. Based on the command from the controller 13, a solenoid valve 11 is operated to operate the roll bending devices 7 of the plural stands in the same direction while maintaining their pressures at a fixed ratio.

4. 发明专利

JPS55122608A ROLLING MILL 失效
公开(公告)号：JPS55122608A
公开(公告)日：1980-09-20
申请号：JP2963479
申请日：1979-03-14
申请人： ISHIKAWAJIMA HARIMA HEAVY IND , NIPPON STEEL CORP
发明人： KIZAKI KANJI , HARA TSUTOMU , HONJIYOU HISASHI , EMORI TAKASHI , TERAKAWA MASATOMO , TAKASHIMA YOSHIAKI , KAMATANI AKIHIRO
IPC分类号： B21B37/38 , B21B37/00
摘要： PURPOSE:To control fluctuation of plate crown due to the change in plate temp. so as to keep the plate crown constant independently of the change in plate temp., by detecting the change in the plate temp., which influences remarkably the fluctuation of the plate crown, in order to control the plate crown. CONSTITUTION:In rolling of a plate 8, when the temp. of the plate 8 on the inlet side of a rolling mill changes, the change in the plate temp. is measured immediately by a thermometer 9, and the output signal of the temp. is fed to an arithmetic unit 10, where the signal is converted to bending press. Then the set signal of the beding press. corresponding to the plate temp. is fed from the unit 10 to a hydraulic control valve 11 so as to adjust the hydraulic press. directed from a hydraulic source to a double-chock work roll bending unit 7 by the valve 11, thereby controlling the plate crown by the unit 7. The controlled variable of the plate crown controlled according to the command from the unit 10 never oversteps beyond the range determined in accordance with shape dead zone, so that plate crown is controlled without throwing the plate shape into disorder.

5. 发明专利

JPS5592216A METHOD AND APPARATUS FOR CONTROLLING PLATE CROWN 失效
公开(公告)号：JPS5592216A
公开(公告)日：1980-07-12
申请号：JP16349878
申请日：1978-12-28
申请人： ISHIKAWAJIMA HARIMA HEAVY IND , NIPPON STEEL CORP
发明人： KIZAKI KIYOSHI , HARA TSUTOMU , EMORI TAKASHI , HONJIYOU HISASHI , TERAKAWA MASATOMO , TAKASHIMA YOSHIAKI , KAMATANI AKIHIRO
IPC分类号： B21B37/38 , B21B37/00
摘要： PURPOSE:To make the pass characteristic of plate stable and make control effective by determining the maximum value of plate crown control amount based on shape blind zone and distributing the control amount within that range thereby performing the plate crown control. CONSTITUTION:In rolling, the deformation resistances obtained from the width, thickness, steel kinds, temperature, etc. necessary for determining shape absolute blind zone are sent to a setter 9 by the signal from a rolling condition operating setter 8. From these values, the blind zone is operated by an arithmetic unit 10. Next, from this value, the maximum value of plate crown control amount is determined and within this range the control amount is distributed to the double chock work roll bending devices 7 of the respective stands. In this case, the degree of permissible shape is larger as it goes toward the upper stream stands and therefore the practicable blind zone may be widened and the plate crown control amount in the upstream stands may be correspondingly increased.

6. 发明专利

JPS55122607A ROLLING MILL 失效
公开(公告)号：JPS55122607A
公开(公告)日：1980-09-20
申请号：JP2963379
申请日：1979-03-14
申请人： ISHIKAWAJIMA HARIMA HEAVY IND , NIPPON STEEL CORP
发明人： KIZAKI KANJI , HARA TSUTOMU , HONJIYOU HISASHI , EMORI TAKASHI , TERAKAWA MASATOMO , TAKASHIMA YOSHIAKI , KAMATANI AKIHIRO
IPC分类号： B21B37/38 , B21B37/00
摘要： PURPOSE:To control plate-crown correctly and constantly, by installing a plate- crown-detecting means and a plate-shape-detecting means on the outlet side of the final stand of a continuous rolling unit, and by the feedback of the output signal of the plate-shape-detecting means to the final stand. CONSTITUTION:A material to be rolled is rolled by a series of stands from the first stand S1 to the final stand S6, and the plate crown of the product is measured by a plate-crown-detecting means 15 installed on the outlet side of the final stand S6. The measured value is inputted to an arithmetic unit 17, and is fed back to roll- bending unit 7 of the stands excepting the stand S6. That is, the detected value of plate crown is changed to a bending press. signal by the unit 17, and compared with the reference value of bending press. of each stand. When the detected value of plate crown is different from the reference value, the bending press. of each unit 7 is controlled for the correction. The plate shape on the outlet side of the stand S6 is detected 16, and the detected value is inputted to an arithmetic unit 19, then fed back to the unit 7 of the stand S6, i.e., when the plate shape is detected 16, the output signal is inputted to the unit 19, where the signal is converted to bending press.

7. 发明专利

JPS55112114A METHOD AND APPARATUS FOR SHAPE CONTROL 失效
公开(公告)号：JPS55112114A
公开(公告)日：1980-08-29
申请号：JP1878879
申请日：1979-02-20
申请人： ISHIKAWAJIMA HARIMA HEAVY IND , NIPPON STEEL CORP
发明人： EMORI TAKASHI , KIZAKI KANJI , HARA TSUTOMU , HONJIYOU HISASHI , TERAKAWA MASATOMO , TAKASHIMA YOSHIAKI , KAMATANI AKIHIRO
IPC分类号： B21B37/38 , B21B37/00 , G05D5/02
摘要： PURPOSE:To make obtainable the sheet of good shape, by detecting the sheet shape and profile on the delivery side of the stand being subhected to the double chock bending, by respectively processing the detected values, and by utilizing them for controlling the inside and outside benders. CONSTITUTION:The shape of the rolled sheet 5 on the delivery side of the rolling mill constituting of work rolls 1, 2, and upper and lower backup rolls 3, 4, being subjected to the double chock bendings FIW, FOW, and FIB, FOB, is detected by the detector 9 through the TV-camera 7; and the sheet thickness is detected by the profile detector 10 through the X-ray thickness meter 8. The signal processing circuit 11 receives outputs of above two detectors, and judges the shape of edge wave and center buckle from the shape of the sheet 5, and operates the controlled variables for the outside benders FOW, FOB, and besides, operates the controlled variables for the inside benders FIW, FIB, from the thickness of the sheet 5; hereby, the benders are controlled respectively through the hydraulic pressure converters 19-22. In this method, since the bending is controlled at the position to be free from the shape change despite the profile change, the sheet of good shape can be obtained.

8. 发明专利

JPS5592218A METHOD AND APPARATUS FOR CONTROLLING PLATE CROWN AND PLATE SHAPE IN CONTINUOUS ROLLING MILL 失效
公开(公告)号：JPS5592218A
公开(公告)日：1980-07-12
申请号：JP16350078
申请日：1978-12-28
申请人： ISHIKAWAJIMA HARIMA HEAVY IND , NIPPON STEEL CORP
发明人： KIZAKI KIYOSHI , HARA TSUTOMU , EMORI TAKASHI , HONJIYOU HISASHI , TERAKAWA MASATOMO , TAKASHIMA YOSHIAKI , KAMATANI AKIHIRO
IPC分类号： B21B37/38 , B21B37/00
摘要： PURPOSE:To hold the control amounts of the fore stage and expand the control amount of the final stand by cooperatively controlling the plural stands of the fore stage as group and letting plate crowns be controlled within shape blind zones independently of the stands of the post stage. CONSTITUTION:In the respective stands S4-S6 of the post stage, the control amounts of the plate crown of the respective stands S4-S6 are forecast and operated in an arithmetic unit 12 with the widths b1-b6 of the shape blind zone in each stand as data and the plate crowns are independently controlled within the individual shape blind zones in the respective stands by controlling pressure regulating valves 10 with respective pressure indicators 11. Here, the allowable range of the shapes is widened except in the final stand S6 and the plate crowns are controlled at the large plate crown control amounts within the practicable blind zones. In the final stand S6, the plate crown control is accomplished within the shape absolute blind zone. Thereby, the plate crown control amount in the final stand may be expanded.

9. 发明专利

JPS55126310A CONTROLLING METHOD FOR SHEET CROWN IN ROLLING MILL 失效
公开(公告)号：JPS55126310A
公开(公告)日：1980-09-30
申请号：JP3310879
申请日：1979-03-20
申请人： ISHIKAWAJIMA HARIMA HEAVY IND , NIPPON STEEL CORP
发明人： KIZAKI KANJI , HARA TSUTOMU , HONJIYOU HISASHI , EMORI TAKASHI , TERAKAWA MASATOMO , TAKASHIMA YOSHIAKI , KAMATANI AKIHIRO
IPC分类号： B21B37/00 , B21B37/38
摘要： PURPOSE:To control the sheet crown without worsening the sheet shape, by installing the roll bending device in the stand except the final stand so as to be the sheet crown controlling stand, and by inputting the detected sheet crown value on the delivery side of the final stand to above stated roll bending device as the feedback. CONSTITUTION:When the sheet crown detector 14 on the delivery side of final stand S6 detects the sheet crown of the product, the output signal is inputted to the signal processor 10 which converts the input signal into the bending pressure to control the sheet crown. In the processor 10, the set value of the bending pressure is determined so as to obtain the aim final sheet crown in consideration of the shape blind sector; therefore, the actually measured value is compared with the aim crown value depending on the signal produced from the detector 14. If these two values are different, the set value of the bending pressure is corrected by using the detected sheet crown value, and the final sheet crown value is controlled to the aim sheet crown value. According to this method, the passability of the sheet is stabilized, and the improvement of the yield and quality can be contrived.

10. 发明专利

JPS55109509A CONTROLLING METHOD FOR DOUBLE CHOCK BENDER IN CONTINUOUS ROLLING MILL 失效
公开(公告)号：JPS55109509A
公开(公告)日：1980-08-23
申请号：JP1527979
申请日：1979-02-13
申请人： NIPPON STEEL CORP , ISHIKAWAJIMA HARIMA HEAVY IND
发明人： KIZAKI KANJI , HARA TSUTOMU , HONJIYOU HISASHI , EMORI TAKASHI , TERAKAWA MASATOMO , TAKASHIMA YOSHIAKI , KAMATANI AKIHIRO
IPC分类号： B21B29/00 , B21B37/00 , B21B37/38
摘要： PURPOSE:To thoroughly utilize the controllability of the double chock bender, by making as short as possible the increase condition at the tip end and tail end of the steel sheet, and by making utilizable the decrease condition at the middle part of the steel sheet. CONSTITUTION:At the same time as the tip end of the just rolled material is bitten into the crown control stand F4, the signal of load cell 12 is inputted to the arithmetic circuit 13 whose output is given to the control circuit 14; hereby, the bender is changed at once to the decrease condition, and the crown control is continued according to the external signal 15. At the moment that the tail end of steel sheet passes over the stand F3 in front of the crown control stand F4, the signal of load cell 12' is inputted to the arithmetic circuit 13; and the timing of arrival of the tail end of the steel sheet at the control stand F4 is previously operated and forecast by the arithmetic circuit 13 depending on the rotational speed signal given by the rotation detector 16 and the rolling load signal produced from the load cell 12. Just before that timing, the bender 5 is changed to the increase side by the control circuit 14. According to this method, the decrease side controllability of the bender 5 can be effectively utilized.

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