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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

JPS58151975A DETECTING METHOD FOR FAULT OF FLASH BUTT WELDING 失效
公开(公告)号：JPS58151975A
公开(公告)日：1983-09-09
申请号：JP3349582
申请日：1982-03-03
申请人： NIPPON STEEL CORP
发明人： KAMATANI AKIHIRO , NAKAYASU TAKESHI , FURUI KIMIHARU
IPC分类号： B23K11/24 , B23K11/04
摘要： PURPOSE:To detect whether welding is normal or not, by arranging plural magnetic detecting elements dispersedly along the butt part between the rear end of a preceding steep plate and the front end of a trailing steel plate. CONSTITUTION:The magnetic detecting elements for magnetic field distribution detection are arranged dispersedly along the weld zone. Namely, when they are equipped to an electrode, grooves 60 are formed in the electrode 30 on the top surface side in a comb-tooth shape; tips (on a steel plate end side) of the teeth are made deep to arrange detection coil 7 therein, intermediate parts are made shallow to run lead lines 7a of the detection coils 7 therein, and the other-end common part is made slightly deeper to allow the lead lines to run therein. A magnetic field produced by a current flowing through the steel plate during flashing and upsetting is detected to find =>1 of a flashing frequency distribution, flashing mean current distribution, flashing heat input distribution, upsetting mean current distribution, and upsetting heat input distribution from respective output voltages of the detecting elements, thereby detecting whether the welding is normal or not.

5. 发明专利

JPS56114747A SURFACE INSPECTION DEVICE 失效
公开(公告)号：JPS56114747A
公开(公告)日：1981-09-09
申请号：JP1599280
申请日：1980-02-14
申请人： NIPPON STEEL CORP , TOKYO SHIBAURA ELECTRIC CO
发明人： KAMATANI AKIHIRO , GOTOU MASAYUKI , ARITA TAKESHI , FUKAZAWA CHIAKI
IPC分类号： G01N21/88 , G01B11/24 , G01B11/30 , G01N21/89 , G01N21/892
摘要： PURPOSE:To perform surface inspection following a line speed by forming the profile of a long-sized body surface, by selecting a representative flaw, obtained from the profile, on the basis of the shape, and by determining the degree of the flow by weighting. CONSTITUTION:The surface of running long-sized body 11 is scanned optically in its widthwise direction and detection head 10 photodetects and converts reflected light into an electric signal. Then, flaw-position detecting circuit 14 supplied with outputs of discriminating circuit 13 and position pulse generator 23 detects a widthwise flaw position, and profile generating circuit 15 controlled by section signal generating circuit 16 selects flows by prescribed section profiles. Representative flaw selecting circuit 17 selects a flaw of greater than a prescribed length and prescribed width in each profile, weighting circuit 20 weights it through flaw classifying circuit 18 corresponding to the kind, etc., of body 11, and degree discriminating circuit 22 determines the degree of the flow. In this constitution, the surface inspection following a line speed is performed with the same process as visual inspection.

6. 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.

7. 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.

8. 发明专利

JPS5142256A 失效
公开(公告)号：JPS5142256A
公开(公告)日：1976-04-09
申请号：JP11474474
申请日：1974-10-07
申请人： NIPPON STEEL CORP , TOKYO KEIKI KK
发明人： MITO AKIO , OOKI EIJI , MORIMOTO MITSUHIRO , KAMATANI AKIHIRO
IPC分类号： B25J9/02 , B25J5/00 , B25J9/16 , B25J19/00 , G05B19/18 , G05B19/404

9. 发明专利

JPS58151974A FLASH BUTT WELDING MACHINE 失效
公开(公告)号：JPS58151974A
公开(公告)日：1983-09-09
申请号：JP3349482
申请日：1982-03-03
申请人： NIPPON STEEL CORP
发明人： KAMATANI AKIHIRO , NAGAI ISAO , NAKAYASU TAKESHI , FURUI KIMIHARU
IPC分类号： B23K11/24 , B23K11/04
摘要： PURPOSE:To perform highly reliable detection and to prevent an accident such as the breaking of a plate, by detecting a defective welding part over the overall width on the basis of a welding current distribution and ultrasonic flaw detection. CONSTITUTION:While an ultrasonic wave is transmitted from an ultrasonic wave transmitter and receiver 84, a rotary drum 85 is rolled in the widthwise direction of a steel plate 1, and then the ultrasonic wave enters the steel plate 1 slantingly and travels toward a weld zone W while reflected repeatedly by the top and reverse surfaces of the steel plate. If there is a fault in the weld zone, it is reflected to pass through the opposite route to the incident wave, and then received by the transmitter and receiver 84. A flaw detector 81 is equipped with a signal processing circuit and detects the fault in the weld zone by the reflected wave to perform warning, display, etc. The flaw detector 81 is further equipped with a running mechanism for rolling a rotary head 82 in the widthwise direction of the plate.

10. 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.

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