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1. 发明专利

JPH05329520A METHOD AND DEVICE FOR CONTROLLING ROLLING MILL 失效
公开(公告)号：JPH05329520A
公开(公告)日：1993-12-14
申请号：JP16202392
申请日：1992-05-28
申请人： HITACHI LTD , NISSHIN STEEL CO LTD
发明人： SAKAI BUNJI , KUNII SHIGEKI , NARITA KENJIRO , NAGAI HIDEAKI , NAKAZONO EIJI , WATANABE TSUTOMU , ITO TAKESHI
IPC分类号： B21B37/00 , B21B37/38 , B21B38/02
摘要： PURPOSE:To receive rolling information regarding the operational pattern of roll coolant (cooling water) and the wear of a reinforcing roll and to improve the control precision of a plate crown in a four high or six high mill having work rolls and reinforcing rolls. CONSTITUTION:A calculator 24 to calculate the quantity of thermal expansion of each operational roll and a calculator 25 to calculate the wear of each reinforcing roll receive an operational pattern for roll coolant (cooling water) outputted from a setting bank 22 and a transmitting device 23 for a timing command and a rolling information, setting and rolling information regarding the wear of the reinforcing roll. An estimating operation for the roll profile is performed based on the setting and the rolling information in these calculators and a new roll bending force is set to control the plate crown to remove a plate crown deviation caused by a predicted error by a predicted value of the roll profile obtained by this calculation and an actual roll profile when the following material to be rolled is rolled.

2. 发明专利

JPH05104120A METHOD AND DEVICE FOR CONTROLLING SHAPE IN 6 STAGES ROLLING MILL 失效
公开(公告)号：JPH05104120A
公开(公告)日：1993-04-27
申请号：JP26346591
申请日：1991-10-11
申请人： HITACHI LTD , NISSHIN STEEL CO LTD
发明人： KAWASE HIROSHI , NAGAI HIDEAKI , NAKAZONO EIJI , WATANABE TSUTOMU , ITO TAKESHI
IPC分类号： B21B13/14 , B21B37/00 , B21B37/38 , B21B37/42
摘要： PURPOSE:To shorten rolling pitch by greatly reducing time for setting a work roll bending force, roll gap and intermediate roll shift position. CONSTITUTION:In the case of adding the bending force to the work roll or controlling the plate crown of a rolled stock by shifting the intermediate roll to a shaft direction, the target value of the plate crown is set by the step 10 first, the work roll bending force to satisfy the target value is calculated by the step 11 and the plate crown is controlled only by the bending force. However, when it is difficult to achieve the target value of the plate crown only by the work roll bending force, whether or not it is achievable is discriminated by the step 12. When it is discriminated as not achievable, the intermediate roll is shifted by the step 13 and the plate crown control is performed.

3. 发明专利

JPH0484614A METHOD FOR AUTOMATICALLY CONTROLLING SHEET THICKNESS 失效
公开(公告)号：JPH0484614A
公开(公告)日：1992-03-17
申请号：JP19832690
申请日：1990-07-25
申请人： NISSHIN STEEL CO LTD
发明人： SHIGA YUKINARI , NARAHARA HIROSHI , NAKAZONO EIJI
IPC分类号： B21B37/18 , B21B37/16
摘要： PURPOSE:To reduce the front end part of a sheet to be disposed as scrap by forward feeding the sheet thickness deviation to the ensuing stage stand when the front end of the sheet engages with a front stage stand and setting up the ensuing stage stand, then executing absolute value control when the front end of the sheet engages with the ensuing stage stand. CONSTITUTION:The correction rate of a draft is calculated by the deviation between the actual value determined by a gage meter and a target value when the front end of the sheet engages with the front stage stand. This value is fed forward to the ensuing stage stand by which the draft position is adjusted and the ensuing stage stand is set up again. The speed of the ensuing stage stand is then corrected according to the change component of the mass flow by the correction of the draft position of the stand to correct the inter-stand tension at the time of engaging with the next stand is controlled to the target value. This stage is combined with the stage of correcting the draft position so as to decrease the deviation between the actual value at the stand and the target thickness to 0 when the front end of the sheet engages with the stand. The time before the completion of the control is shortened in such a manner by which the off-gage part is decreased. The front end part of the sheet to be disposed as the scrap is reduced, as well.

4. 发明专利

JPS63238916A TRACKING METHOD FOR ROLLED STOCK 失效
公开(公告)号：JPS63238916A
公开(公告)日：1988-10-05
申请号：JP7123987
申请日：1987-03-25
申请人： NISSHIN STEEL CO LTD , MITSUBISHI HEAVY IND LTD , MITSUBISHI ELECTRIC CORP
发明人： YAMAZAKI MASAKUNI , ISHIKAWA SHUICHI , MATSUMOTO KENICHI , NAKAZONO EIJI , TSUKAMOTO EIHIKO , KAWANAMI KATSUSUKE , KURAMOTO SATORU
IPC分类号： B21B37/00
摘要： PURPOSE:To perform an accurate tracking by corresponding to each temp. skid obtained from the bits of temp. information of a rolled stock from an outlet of a rough rolling mill and from an outlet of a finish rolling mill. CONSTITUTION:Data from the top end are given a second look at each skid cycle and when the data to be stored on line of the temp. memory value 17 of the finish outlet side are stored over one skid cycle, at this time, the maximum temp. value and the minimum temp. value in the first one skid cycle within the temp. memory value 14 in which temp. information 13 is stored in the memory of a control device are taken out. The maximum temp. value and the minimum temp. value in the temp. memory 17 are taken out to be the corresponding points of each other. And so forth, the maximum temp. value and the minimum temp. value in the next one skid cycle are taken out, the points of the temp. memory value 14 of the rough rolling mill outlet and the temp. memory value of the finish rolling mill outlet are allowed to correspond.

5. 发明专利

JPS63238914A CONTROL METHOD FOR SHEET WIDTH IN ROUGH ROLLING MILL 失效
公开(公告)号：JPS63238914A
公开(公告)日：1988-10-05
申请号：JP7123887
申请日：1987-03-25
申请人： NISSHIN STEEL CO LTD , MITSUBISHI HEAVY IND LTD , MITSUBISHI ELECTRIC CORP
发明人： YAMAZAKI MASAKUNI , ISHIKAWA SHUICHI , MATSUMOTO KENICHI , NAKAZONO EIJI , ABE MITSUHIRO , OSONO RYUICHI , KURAMOTO SATORU
IPC分类号： B21B37/00 , B21B37/22
摘要： PURPOSE:To control the width of a rolled stock to be constant for the total length of the stock on the outlet side of a horizontal roll and to obtain products having high accurate sheet width by correcting a setting of a vertical roll for the top and rear end parts of the stock based on width measurement data for a constant part of the stock. CONSTITUTION:A width measuring instrument 5 is used to measure a width of a constant part of a rolled stock 1; a width mean value is found based on obtained width measurements before a start of roll opening correction of a vertical roll 2 and the mean value is used to correct the vertical roll opening. On the other hand, for the rear end part, a mean width value of the total part is found and is used as a vertical roll opening correction value because measurement for the total constant part is finished. Thus, a width of the stock 1 for the total length is controlled to be constant on the outlet side of a horizontal roll 3 and products having high accurate width are obtained.

6. 发明专利

JPS60255209A METHOD FOR CONTROLLING EDGER GAP IN ROLLING MILL 失效
公开(公告)号：JPS60255209A
公开(公告)日：1985-12-16
申请号：JP10843384
申请日：1984-05-30
申请人： MITSUBISHI HEAVY IND LTD , NISSHIN STEEL CO LTD , MITSUBISHI ELECTRIC CORP
发明人： TSUKAMOTO EIHIKO , TAKAMOTO EIJI , ASADA KOUICHI , YAMAZAKI MASAKUNI , MATSUMOTO KENICHI , NAKAZONO EIJI , WAKAMIYA NOBUNORI , KURAMOTO SATORU
IPC分类号： B21B1/04 , B21B13/06 , B21B37/00 , B21B37/22
摘要： PURPOSE:To enable exact control and to obtain a rolling plate having a desired shape without deformation by measuring the width distribution of the rolling plate on the inlet side of an edger roll and calculating the set quantity of the edger gap by using the measured value. CONSTITUTION:A width gage 4 is provided on the inlet side of the edger roll 1 adjacently to said roll 1 and the width of the rolling plate 3 prior to the entry to the roll 1 is measured. The width distribution W0(X) (X: the distance from the front end of the plate) of the plate 3 is thus determined. The distribution W0 is stored as a width deviation distribution DELTAW0(X) in a width fluctuation memory 5 and is supplied with a time lag to a computer 7 by a time lag device 6. On the other hand, the pass schedule 8 determined preliminarily by an upper computer, etc. and the target width DELTAW3(X)9 required in the outlet of the rolling mill are inputted to the computer 7 and the optimum set distribution DELTAW1(X) of the edger gap to obtain the target width is calculated by the computer 7. Such quantity is fed forward to an edger gap setter 10, by which the edger gap is controlled.

7. 发明专利

JPH02160153A DETECTION OF JOINT POSITION OF CAST SLAB IN CONTINUOUS CASTING 失效
公开(公告)号：JPH02160153A
公开(公告)日：1990-06-20
申请号：JP31423888
申请日：1988-12-12
申请人： NISSHIN STEEL CO LTD
发明人： ITO TAKESHI , SUGIMASA HIROSHI , NAKAZONO EIJI
IPC分类号： B22D11/16
摘要： PURPOSE:To improve detected accuracy of joint pat and to prevent mistake for scale by picking up the joint position of a cast slab with a solid-state image sensor camera, fetching this image signal into an image processing device for detecting joint part and processing the image signal. CONSTITUTION:On the cast slab discharged from rolls 10, a CCD camera 13 fitting an infrared-ray transmitting filter is set and the image signal of the surface of the cast picked up with the camera 13 is transmitted to image processing device 14. The processing device 14 reads the brightness data to the width direction of the cast slab and this average value is calculated and repeated to the prescribed line in the length direction of the cast slab. The average value of all read brightness data, is made to the average value of the whole and the min. value in the average value in one line is compared with the value multiplying the average value of the whole by the constant. In the case the min. value in the average value in one line is smaller than the above another value, this is detected as the joint position, and in the case this value is larger than the above another value, the next figure data is fetched, and the processing from the initial stage is repeated. The obtd. data is displayed on TV. At the time of detecting the joint position, the signal is transmitted to a process computer 15 and the cutting device 12 is worked.

8. 发明专利

JPH02151312A APPARATUS AND METHOD FOR CONTROLLING TEMPERATURE OF HOT STRIP 失效
公开(公告)号：JPH02151312A
公开(公告)日：1990-06-11
申请号：JP30098588
申请日：1988-11-30
申请人： NISSHIN STEEL CO LTD
发明人： NARAHARA HIROSHI , NAKAZONO EIJI , MATSUMOTO KENICHI
IPC分类号： B21B37/00 , B21B37/68 , B21B37/74 , B21B37/76 , B21B45/02
摘要： PURPOSE:To freely control the temperature in the width direction of a strip by giving a shifting magnetic field to each electromagnetic coil to move an armature and controlling the discharge of water from each nozzle. CONSTITUTION:When cooled water is fed under pressure into a tube body 1, the cooled water is supplied from the upper part to the strip 8. Based on meandering sensor signals 10a from a meandering sensor 10, the control signals 7a, 7b from an edge temperature controller 7 are supplied to each thyrister S1 - S5 and S'1 - S'5 to give a shifting magnetic field to electromagnetic coils 5a - 5e'. Then, a pair of armatures 3, 3a positioned at both ends of the tube body 1 is moved and any of corresponding nozzles 5a - 5e' is put in a closed state to stop the cooled water form being supplied. Consequently, when the motion of each thyrister S1 - S'5 operated by the meandering sensor signal is followed by the real time system, the supply state of the cooled water at both ends of the tube body 1, that is, at both ends in the width direction of the strip 8 can be controlled freely and the structure in the width direction of the strip 8 can be uniformized.

9. 发明专利

JPS63238913A DEVICE FOR CONTROLLING SHEET WIDTH 失效
公开(公告)号：JPS63238913A
公开(公告)日：1988-10-05
申请号：JP7123787
申请日：1987-03-25
申请人： NISSHIN STEEL CO LTD , MITSUBISHI HEAVY IND LTD , MITSUBISHI ELECTRIC CORP
发明人： YAMAZAKI MASAKUNI , ISHIKAWA SHUICHI , MATSUMOTO KENICHI , NAKAZONO EIJI , TERADA IKUJI , TAKAMOTO EIJI , KURAMOTO SATORU
IPC分类号： B21B37/00 , B21B37/22
摘要： PURPOSE:To obtain products having high width accuracy by calculating tensions and tension applying periods of a strip passing through a finishing rolling mill and a coiler for the total length of the strip and controlling a strip width on the outlet side of the finishing mill based on the calculated values. CONSTITUTION:Width variations of a hot strip are previously calculated based on a tension, a period of time for which a tension is applied, a temp. and composition of the hot strip. Width variations generated between a finishing mill 4 and a coiler 7 are predicted at respective points of the strip. A controller 15 sends opening correction signals to a rough rolling mill vertical roll 1 to perform width correction on a bar based on the predicted width variation at respective points and a previously determined relation between a strip width and a bar width. A bar subjected to width correction is transferred to the inlet side of the finishing mill 4.

10. 发明专利

JPS62197210A METHOD AND DEVICE FOR CONTROLLING CONTINUOUS ROLLING MILL 失效
公开(公告)号：JPS62197210A
公开(公告)日：1987-08-31
申请号：JP3760286
申请日：1986-02-22
申请人： NISSHIN STEEL CO LTD
发明人： TAKEI KUNIO , ISHIKAWA SHUICHI , MATSUMOTO KENICHI , YAMAZAKI MASAKUNI , NAKAZONO EIJI
IPC分类号： B21B37/58 , B21B37/20
摘要： PURPOSE:To improve the load prediction accuracy and the rolled stock quality regardless of friction states by calculating an advancing ratio based on a screwdown load, the number of revolutions, a carrying-out speed, and the final plate thickness of each rolling mill and controlling each roll opening for a continuous rolling. CONSTITUTION:A measured advancing ratio is obtained by inputting a carrying-out speed 7 of each stand 2 and a peripheral speed of a rolling roll by a path generator 5 into an advancing ratio computing element 6. A thickness value by a thickness meter 8 in the outlet side of the final stand and a rolling load of respective stands 2 are measured by a load cell 3 and the computing element 6 calculates a calculated advancing ratio. Those measured and calculated advancing ratios are inputted into a computer 9 so as to correct the calculated advancing ratio and to control a rolling speed. A rolling load of each stand 2 is predicted based on the corrected advancing ratio in accordance with frictional states between a rolling roll 2 and a rolled stock 1 to control a roll opening. In this method, the load prediction accuracy covering all the fixed and sliding frictional ranges of respective stand 2 is improved and rolled stocks with stable quality are always obtained.

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