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1. 发明专利

JPH08174035A SYSTEM FOR FEEDING LUBRICATING OIL BETWEEN ROLLS OF WORK ROLL CROSS ROLLING MILL 失效
公开(公告)号：JPH08174035A
公开(公告)日：1996-07-09
申请号：JP32734194
申请日：1994-12-28
申请人： HITACHI LTD , NISSHIN STEEL CO LTD
发明人： YOSHIMURA YASUTSUGU , YOSHIMOTO KENICHI , KAGA SHINICHI , SAKANAKA TAKAO , ONO HIROSHI , NAKAGAMI HIROSHI , SHIGA YUKINARI , WATANABE TSUTOMU
IPC分类号： B21B27/10 , B21B1/22 , B21B13/14 , B21B31/16 , B21B37/00 , B21B37/28 , B21B37/32 , B21B37/38 , B21B45/02
摘要： PURPOSE: To totally control the rolling condition related to the lubrication by controlling the thrust coefficient (the coefficient of friction) in the lubrication between a reinforcing roll and a working roll of a work roll cross rolling mill. CONSTITUTION: When the thrust coefficient μ calculated by a thrust coefficient arithmetic unit 64 from the thrust F obtained from thrust meters 4, 4', 5, 5' and the load P obtained by a rolling load meter 60 has the target thrust coefficient μ* and the deviation Δμ, the deviation signal is transmitted to a spray controller 15, a concentration controller 17 and an oil kind switching controller 65 in this order to control the thrust coefficient (the coefficient of thrust). The conditions where the thrust becomes excessive or troubles such as the breakage of a roll bearing are generated can be prevented, and the appropriate lubricating performance free from the vibration or slip can be obtained.

2. 发明专利

JPH08174009A ROLLING MILL AND ROLLING METHOD 失效
公开(公告)号：JPH08174009A
公开(公告)日：1996-07-09
申请号：JP32735494
申请日：1994-12-28
申请人： HITACHI LTD , NISSHIN STEEL CO LTD
发明人： YOSHIOKA TAKAHIRO , SAKANAKA TAKAO , KAGA SHINICHI , NARAHARA HIROSHI , ONO HIROSHI , SHIGA YUKINARI
IPC分类号： B21B31/18 , B21B13/14
摘要： PURPOSE: To improve the positioning accuracy of work rolls and reduce the influence on roll chocks by horizontal forces added to the rolls in a rolling mill and rolling method in which the roll chocks are moved so that the axial centers of a pair of rolls are crossed each other in a plane parallel to the plate surface of a rolled stock. CONSTITUTION: The roll chock 1 for supporting the roll is supported with hydraulic cylinders 2a, 2b on the inlet and outlet sides of the rolled stock and the push side port 2c of the hydraulic cylinder 2a and the secondary port 4c of a closed center type four-direction selector valve 4, and the push side port 2d of the hydraulic cylinder 2b and the secondary side 4d of the direction selector valve 4 are respectively connected. The oil pressure added to the hydraulic cylinders 2a, 2b is adjusted in accordance with the rolling state with the direction selector valve 4 and the position of the roll chock 1 is controlled.

3. 发明专利

JPH04305304A METHOD FOR CONTROLLING CAMBER IN HOT ROLLING MILL 失效
公开(公告)号：JPH04305304A
公开(公告)日：1992-10-28
申请号：JP9124291
申请日：1991-03-29
申请人： NISSHIN STEEL CO LTD
发明人： NARAHARA HIROSHI , MATSUMOTO KENICHI , SHIGA YUKINARI
IPC分类号： B21B37/00 , B21B37/22 , B21B37/30 , G05B13/02
摘要： PURPOSE:To control chamber by moving a rolled stock in the width direction with edger rolls of a hot rolling mill. CONSTITUTION:In a rolling line which is arranged with a 1st rolling equipment which is provided with a 1st stand in which a rolling load measuring means and roll gap adjusting means are provided, means for measuring the temp. and thickness of rolled stock which are provided on the inlet side of the 1st stand and means for detecting the position in the width direction of the rolled stock arranged on the inlet and outlet sides of a (n-1)th stand, and an n-th rolling equipment which is provided with a position detecting means which is provided on the inlet and outlet sides of an n-th stand provided with a rolling lead measuring means and roll gap adjusting means; feed forward control that is implemented with the edger rolls so as to correct the camber of the rolled stock by calculating wedge ratio, camber ratio and temp. difference in the width direction of the rolled stock from the measured value of the 1st rolling equipment and feedback control that the position of the edger rolls is adjusted so as to correct chamber by calculating camber by the position ion the width direction of the rolled stock on the inlet and outlet sides of the n-th rolling mill are involved.

4. 发明专利

JPH04100626A METHOD FOR AUTOMATICALLY CONTROLLING SHEET THICKNESS 失效
公开(公告)号：JPH04100626A
公开(公告)日：1992-04-02
申请号：JP22050990
申请日：1990-08-21
申请人： NISSHIN STEEL CO LTD
发明人： SHIGA YUKINARI , NARAHARA HIROSHI
IPC分类号： B21B37/00 , B21B37/18 , B21B37/30 , B21B37/58 , B21B37/68
摘要： PURPOSE:To prevent the sheet from meandering even if the change of the load level occurs rapidly, by controlling the position of rolling reduction so that the draft of the operating side and the driving side are made constant and the center sheet thickness is made to the target sheet thickness. CONSTITUTION:The sheet thicknesses of the operating side of the inlet side, the center position and the driving side are made respectively as Hw, Hc, Ho, each sheet thickness of the outlet side is made as hw, hc, ho, and the draft of the operating side and the driving side are respectively rw=(Hw-hw)/Hw, ro=(Ho-ho)/Hoo rw=ro, and the draft is made constant. The change of the position of rolling reduction is corrected based on Sw, So which are expressed as the equation I, and the equation II. A, B, C, D are the values shown in the equation III, the equation IV. Sw, Sw; the current value of roll gap of the operating side and the driving side, Mw and Mw; mill constant, Fw and Fw: the current value of rolling load, mw and mo: the mill curve being the function of the load, Q: the plastic coefficient.

5. 发明专利

JP2008018459A Cooling control method for high carbon hot-rolled steel sheet 有权
标题翻译：高碳热轧钢板冷却控制方法
公开(公告)号：JP2008018459A
公开(公告)日：2008-01-31
申请号：JP2006192937
申请日：2006-07-13
申请人： Nisshin Steel Co Ltd , 日新製鋼株式会社
发明人： SASANUMA AKIO , WATANABE TSUTOMU , SHIGA YUKINARI , TAMURA TETSUYA
IPC分类号： B21B37/76 , B21B37/00 , B21B45/02
摘要： PROBLEM TO BE SOLVED: To solve the problem that a conventional calculation method of temperature prediction of a high carbon hot-rolled steel sheet on a runout table takes not only a temperature reduction by water cooling but also a temperature rise by a transformation heat into consideration, so that it is difficult to determine that the generation of a temperature deviation is caused by whether a calculation error brought by a long term deterioration of water-cooled equipment or by a calculation error of the transformation exotherm, thereby deteriorating a temperature prediction accuracy, and to improve a winding temperature accuracy by performing a pouring water control without calculating the transformation heat. SOLUTION: In the method, a distance from a measurement position of a finishing temperature meter FDT to a measurement position of an intermediate temperature meter MT is defined as a pre-step, and a distance from the measurement position of the intermediate temperature meter MT to a measurement position of a winding temperature meter CT is defined as a post-step. In the pre-step, a dynamic control is performed in order to pour water so that an intermediate temperature calculated value at the MT measurement position calculated using a temperature prediction model type of not calculating the transformation heat becomes a target of a virtual intermediate temperature to complete the transformation up to winding determined from previous data. In the post-step, the feedback control is performed so as to be a target winding temperature. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题为了解决现有的径流台上的高碳热轧钢板的温度预测计算方法不仅需要通过水冷而进行的温度降低，而且通过变换进行升温的问题考虑到热量，因此难以确定温度偏差的产生是由水冷设备的长期劣化引起的计算误差还是由转变放热的计算误差引起的，从而使温度降低预测精度，并且通过在不计算变换热的情况下进行倾倒水控制来提高卷绕温度精度。解决方案：在该方法中，从终温度计FDT的测量位置到中间温度计MT的测量位置的距离被定义为前置步骤，并且距离中间温度的测量位置测量MT到绕组温度计CT的测量位置被定义为后步。在该步骤中，进行动态控制以倾倒水，使得使用不计算相变热的温度预测模型类型计算的在MT测量位置处的中间温度计算值成为虚拟中间温度至完成从以前的数据确定的转换。在后续步骤中，执行反馈控制以便成为目标绕组温度。版权所有（C）2008，JPO＆INPIT

6. 发明专利

JPH10244309A LOOPER STEERING DEVICE IN HOT FINISH ROLLING MILL AND MEANDERING CONTROL METHOD OF ROLLING MILL 失效
公开(公告)号：JPH10244309A
公开(公告)日：1998-09-14
申请号：JP4928797
申请日：1997-03-04
申请人： NISSHIN STEEL CO LTD
发明人： SHIGA YUKINARI
IPC分类号： B21B39/08 , B21B37/00 , B21B37/50 , B21B37/68
摘要： PROBLEM TO BE SOLVED: To surely enable control of meandering by detecting a meandering quantity of a strip and conducting pressure control or position control with a cylinder arranged to a lower part of a chock of a looper roller without large influence on a strip width. SOLUTION: A looper, which has a looper roller 5 to control a drop quantity and tension of a strip between each rolling mill adjacent each other, is arranged. Further, a meandering quantity of a strip between rolling mills is detected by a meandering quantity detector. Hydraulic cylinders 8, 9 at WS side and DS side capable of pressure control or position control are arrange to a lower part of chocks 6, 7 of DS side and WS side of the looper roller 5, these are controlled by a servo valve 11. Corresponding to a deviation from a reference of a meandering quantity of the strip set beforehand, a position of the hydraulic cylinders 8, 9 are controlled to change an inclination of the looper roller 5, a meandering quantity of the strip is controlled. By this method, the device and control method to control a meandering quantity of the strip is provided.

7. 发明专利

JP2000263133A CONTROL METHOD FOR SIDE GUIDE 失效
公开(公告)号：JP2000263133A
公开(公告)日：2000-09-26
申请号：JP7061099
申请日：1999-03-16
申请人： NISSHIN STEEL CO LTD
发明人： IMAGAWA KAZUNORI , SHIGA YUKINARI
IPC分类号： B21B39/00 , B21B39/14 , B21C47/24 , B21C47/34
摘要： PROBLEM TO BE SOLVED: To control a side guide so as to avoid a centering defect by setting a centering start distance based on a response time lag T1 of a steel strip position detection sensor tracking the tip of a steel strip and a moving speed V1 of the steel strip and quickening a centering start by the response time lag of the steel strip position detection sensor. SOLUTION: A centering start distance L2 shown in a formula is set (in the formula, L1: a distance mm from a centering completion position set beforehand to a centering start position, L2: a centering start distance mm, L3: a distance mm from a centering completion position to a steel strip position detection sensor). By quickening a centering start by the response lag time of the steel strip position detection sensor, the risk that the steel strip is jammed at a side guide is avoided, the variance in a centering completion rate due to a steel strip moving speed is eliminated. Accordingly, there is no case that the coiled shape of a steel strip tip in coiling is damaged, an yield is improved by preventing side guide jamming and manpower saving is realized by eliminating recoiling.

8. 发明专利

JPH09122735A METHOD FOR COOLING STRIP IN HOT ROLLING 失效
公开(公告)号：JPH09122735A
公开(公告)日：1997-05-13
申请号：JP28373395
申请日：1995-10-31
申请人： NISSHIN STEEL CO LTD
发明人： SHIGA YUKINARI
IPC分类号： B21B39/08 , B21B45/02
摘要： PROBLEM TO BE SOLVED: To improve the precision of cooling control, and eliminate the need for elongating a run-out table by cooling a strip in the second cooling part of a looper equipment after the tip part of the strip has passed through a final stand. SOLUTION: For the cooling control of a second cooling part 30, a temperature is measured by an outlet side temperature sensor 9 installed in a place near the outlet of outlet side pinch rolls 5, it is compared with a temperature measured on the outlet side of a final stand 1, is comparison-operated, and prescribed cooling control is performed. Further, for a strip 13 which has come out from the outlet side pinch rolls 5, cooling control is performed by sprinkling from a first cooling part 10 installed on the run-out table 14. Therefore, the cooling temperature and the speed of the strip 13 can be controlled by the control of the loop quantity of a looper equipment 15.

9. 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.

10. 发明专利

JPH09122730A HOT ROLLING EQUIPMENT 失效
公开(公告)号：JPH09122730A
公开(公告)日：1997-05-13
申请号：JP28373595
申请日：1995-10-31
申请人： NISSHIN STEEL CO LTD
发明人： SHIGA YUKINARI , ISHIKAWA SHUICHI , TAMURA NAOHISA , YANO ETSUJI
IPC分类号： B21B39/08
摘要： PROBLEM TO BE SOLVED: To coil a strip without wrinkles or the like by controlling the transporting rate of the strip with looper equipment provided between a final stand and a coiler. SOLUTION: This hot rolling equipment has inlet-side pinch rolls 3 for controlling tension of the strip 13 just after the outlet side of the final stand 1 and, on the downstream side of the pinch rolls, the looper equipment 15 variable in loop amount and cooling capacity and having an outlet-side pinch rolls 5 is provided and the speed and temp. of the strip 13 are controlled. Then, the strip is coiled without wrinkles or the like with the coiler 12.

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