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1. 发明专利

JP2000084608A METHOD FOR MEASURING POSITIONAL DEVIATION OF AXIAL CENTER OF ROLL IN ROLLING MILL AND METHOD FOR ADJUSTING POSITION OF AXIAL CENTER OF ROLL 失效
公开(公告)号：JP2000084608A
公开(公告)日：2000-03-28
申请号：JP25676198
申请日：1998-09-10
申请人： KAWASAKI STEEL CO
发明人： SUMINAGA TOMOTAKE , SHIMIZU MASUHITO , TAKESHIMA RIKIO
IPC分类号： B21B31/16 , B21B13/14 , B21B37/00
摘要： PROBLEM TO BE SOLVED: To simplify measurement by twice determining the load difference between reducing loads on both sides in the axial direction of rolls by changing a cross angle when prescribed reducing loads are loaded and, based on difference between two load differences and prescribed reducing loads, determining the deviation value in the rolling direction between the axial centers of an upper and lower work rolls. SOLUTION: After crossly arranging upper and lower rolling rolls 1-4 so as to be a prescribed cross angle θ1 by operating the driving actuators of a crossing mechanism, prescribed reducing loads P are loaded on the upper back-up roll 3 by driving each screw-down device 6, right and left reducing loads are respectively detected with right and left load cells 5 and load difference ΔP1 between the detected loads is determined. Succeedingly, the cross angle θ2 is changed, the right and left reducing loads are detected after setting the same reducing load P12 and their load difference ΔP2 is determined. Based on the difference ΔΔP between the load differences, two cross angles θ1, θ2 and reducing load P, the deviation value (x) of the axial center between the upper and lower rolls is determined.

2. 发明专利

JPH10263677A METHOD FOR DESCALING HOT ROLLED SLAB 失效
公开(公告)号：JPH10263677A
公开(公告)日：1998-10-06
申请号：JP7313797
申请日：1997-03-26
申请人： KAWASAKI STEEL CO
发明人： TAKESHIMA RIKIO , SUMINAGA TOMOTAKE , SHIMIZU MASUHITO
IPC分类号： B21B45/08
摘要： PROBLEM TO BE SOLVED: To remove the difficult-to-separate scales before hot rolling to the degree of not being developed into defects of the product after rolling by specifying the interval between the inlet side and the outlet side of the spray pattern on the surface of a steel slab in the prescribed dimensional range. SOLUTION: In this method for descaling a hot rolled steel slab 1 by using a descaling header 3 of the inlet and outlet side nozzles 4A, 4B sorting system, the interval between the inlet side 6A and the outlet side 6B of the spray pattern on the surface of a steel slab 1 is set to be >=50mm to >=1000mm. If L 1000m, the nozzle height H is too large, or either or each of the spray collision angle θA on the inlet side or the spray collision angle θB on the outlet side is too small, and the impact force of the spray is weakened.

3. 发明专利

JPH1085810A METHOD FOR ZERO-REGULATION IN LEVELING OF HOT ROLL FINISH ROLLING MILL 失效
公开(公告)号：JPH1085810A
公开(公告)日：1998-04-07
申请号：JP24993996
申请日：1996-09-20
申请人： KAWASAKI STEEL CO
发明人： SUMINAGA TOMOTAKE , SHIMIZU MASUHITO , UCHIYAMA TAKAO
IPC分类号： B21B31/32 , B21B37/00
摘要： PROBLEM TO BE SOLVED: To improve the accuracy of the zero regulation in the draft position and the leveling by reducing the variance in thrust through the difference in the peripheral speed of upper and lower work rolls to reduce the variance in the differential load of the zero regulation in the leveling. SOLUTION: When the peripheral speed of an upper work roll 6 is higher than that of a lower work roll 7, the differential peripheral speed Pd1 is applied to an inlet side of the upper work roll 6 with the lower work roll 7 slow in the peripheral speed as a resistance, and the differential peripheral speed Pd2 is applied to an outlet side of the lower work roll 7 because the upper work roll 6 higher in the peripheral speed presses the lower work roll 7 toward the outlet side. The friction force FB of a bender cylinder 13 is applied to a roll chock 11. The force is generated by the sliding resistance to be applied to a sliding part between the bender cylinder 13 and the roll chock 11, and constantly in the direction to stop the movement of the roll chock 11. When the chock position is stabilized, variance of the cross angle is reduced, and variance of the differential load is also reduced.

4. 发明专利

JPH11156425A DESCALING DEVICE 失效
公开(公告)号：JPH11156425A
公开(公告)日：1999-06-15
申请号：JP33205897
申请日：1997-12-02
申请人： KAWASAKI STEEL CO
发明人： SUMINAGA TOMOTAKE , SHIMIZU MASUHITO , TAKESHIMA RIKIO
IPC分类号： B21B45/08
摘要： PROBLEM TO BE SOLVED: To provide the descaling device in a hot rolling equipment which is possible to remove oxidized scale to the extent that the oxidized scale does not develop to red scale after rolling even if it is difficult-to-peel scale. SOLUTION: Plural nozzles 3 arranged along the width direction of a plate 1, are set so that the spouting out of high pressure water 11 by the adjacent nozzles 3 becomes alternately attack injection and following injection. Also, the direction H of the spray width of the high pressure water P injected from each nozzle 3, is put in order in a prescribed direction and is set so that it tilts by a prescribed angle γ of twist in the direction Q along the plate transfer direction from the plate width direction W respectively. Consequently, stagnant collected between jetting spray 4a on the inlet side and jetting spray 4b on the outlet side, is reduced.

5. 发明专利

JPH1085812A METHOD FOR ZERO REGULATION IN LEVELING OF HOT ROLL FINISH ROLLING MILL 失效
公开(公告)号：JPH1085812A
公开(公告)日：1998-04-07
申请号：JP24994196
申请日：1996-09-20
申请人： KAWASAKI STEEL CO
发明人： SUMINAGA TOMOTAKE , SHIMIZU MASUHITO , YAMADA YASUHIRO
IPC分类号： B21B31/32 , B21B37/00
摘要： PROBLEM TO BE SOLVED: To improve the accuracy of the zero regulation in leveling by using the differential oil column during the rolling immediately before a roll is changed and the converted value in terms of the differential oil column of dimensional change caused by the roll change such as symmetry in the roll to set the leveling so that the gap between rolls is parallel. SOLUTION: The zero-regulated value by the normal differential load is denoted by ○, the value by the method to use the preceding differential oil column is denoted by ▵, and the value corrected for the symmetry of the roll to the preceding differential oil column in the present embodiment is denoted by square for comparison. The leveling setting accuracy is improved by setting the leveling so that the gap between rolls is parallel by the corrected value of the differential oil column in the preceding rolling by the converted value in terms of the differential oil column where the difference in the roll diameter between the operator side and on the drive side for the preceding roll and the present roll, for example, when the rolls are changed without regulation in leveling by the differential load during the zero regulation in the leveling.

6. 发明专利

JPH0671330A DESCALING METHOD IN TIME OF HOT ROLLING 失效
公开(公告)号：JPH0671330A
公开(公告)日：1994-03-15
申请号：JP15838993
申请日：1993-06-29
申请人： KAWASAKI STEEL CO
发明人： SUMINAGA TOMOTAKE , TAKENAKA HISAO , TAKAHASHI YOSHIYUKI , OIKAWA RYOSUKE , ADACHI AKIO , ABE MITSUYOSHI
IPC分类号： B08B3/02 , B21B3/02 , B21B45/08
摘要： PURPOSE:To prevent a scal flaw from being generated by injecting high pressure water spray having specified collision pressure and flow rate on the surface of a steel plate before finish rolling. CONSTITUTION:When steel material is hot-rolled to produce the hot rolled steel plate, high pressure water spray of 20-180[g/mm ] collision pressure per unit dispersion area and 0.1-0.6[l/(min, mm )] flow rate us injected on the surface of the steel plate. Austenitic stainless steel is suitable for the steel material. High pressure water spray of 60-170[g/mm ] collision pressure and 0.1-0.2[l/(min, mm )] flow rate is infected on an austenitic stainless steel containing >=0.06% Si. In this way, hard-to-peel scales can be removed surely without receiving operational constraint.

7. 发明专利

JPH0631316A HOT ROLLING METHOD BY USE OF LUBRICANT 失效
公开(公告)号：JPH0631316A
公开(公告)日：1994-02-08
申请号：JP19408592
申请日：1992-07-21
申请人： KAWASAKI STEEL CO
发明人： SUMINAGA TOMOTAKE , NITO TAKASHI , MATSUMOTO MASAJI , KAWASHIMA KOJI
IPC分类号： B21B27/10 , B21B45/02
摘要： PURPOSE:To stabilize the reduction rate of rolling load and to extend the lives of a roll and a draining wiper by adjusting the pressing pressure of a draining wiper to fix the deposition efficiency of lubricant to be supplied on the surface of the roll. CONSTITUTION:In a work roll 1, a backup roll 2, a draining wiper 3, an air cylinder 3a to adjust the pressing pressure at the contact part with a roll is arranged at the rear end of this wiper 3. An arithmetic unit 5 operates the reduction rate of a rolling load by a load signal from a load cell 4 to determine the pressing pressure P of the draining wiper 3 so that a prescribed reduction rate is obtained. The cylinder 3a of the draining wiper 3 is actuated by a pressure controlling mechanism 6 in accordance with determined pressing pressure to supply lubricant through a header 7 for the work roll coolant, a header 8 for supplying lubricant. In this way, though wear of the wiper 3 advances, the deposition efficiency of the lubricant at the work roll 1 becomes fixed and the reduction efficiency of rolling load by the supply of the lubricant, is stabilized as well.

8. 发明专利

JPH11226610A MULTIPLE ROLLING MILL AND CONTROL METHOD FOR SHAPE USING THE SAME 失效
公开(公告)号：JPH11226610A
公开(公告)日：1999-08-24
申请号：JP2821598
申请日：1998-02-10
申请人： KAWASAKI STEEL CO
发明人： KOHIRO YOSHITAKE , TSUZUKI SATOSHI , SUMINAGA TOMOTAKE , TATENO JUNICHI
IPC分类号： B21B27/02 , B21B13/14 , B21B37/00 , B21B37/38
摘要： PROBLEM TO BE SOLVED: To make it possible to control asymmetry in the shape in the plate width direction even in the rolling mill with backup rolls having split patterns not symmtrical to upside and downside by giving a roll crown over one wavelength or over of a same waveform curve to the upper and lower rolls of a pair of two work/intermediate rolls or over, making the roll axial direction of the roll pair reverse each other, and making it possible to move in the axial directions of the upper and lower rolls. SOLUTION: The multiple rolling mill is equipped with the work rolls 12U and 12L to which a tapered shape roll crown is given, usual intermediate rolls 14U and 14L and backup rolls 16U and 16L having the split patterns not symmetrical to upside and downside. The work rolls 12U and 12L can be individually shifted in the roll axial directions on the upside and downside by shift devices 24U and 24L. By an orthogonal function computing element 32 to which the output of a shape detector 30 installed on the outlet side of the multiple rolling mill 20, is inputted, primary to fourth coefficients are calculated, a difference between the operator side and the drive side of the third coefficient, is inputted to a controller 34, and the shift positions of the work rolls 12U and 12L, are controlled respectively.

9. 发明专利

JPH0967617A METHOD FOR ANNEALING AND DESCALING STAINLESS STEEL STRIP AND DEVICE THEREFOR 失效
公开(公告)号：JPH0967617A
公开(公告)日：1997-03-11
申请号：JP22190195
申请日：1995-08-30
申请人： KAWASAKI STEEL CO
发明人： IKEDA MASAHARU , SUMINAGA TOMOTAKE , ISOBE TOSHIKI
IPC分类号： C21D1/70 , C21D9/56 , C23G1/08 , C23G1/24 , C23G3/02
摘要： PROBLEM TO BE SOLVED: To provide an annealing and descaling method of a stainless steel strip, which can maintain the good quality of a steel strip and the service life of a hearth roll even at high feeding speed of the steel strip at the time of treating it in an annealing furnace by applying descaling solution on the surface of the hot-rolled stainless steel strip, and to provide a device therefor. SOLUTION: At a process preceding to a continuous annealing and pickling equipment of the hot-rolled stainless steel strip in an annealing furnace 5, a coating device 16 for solution used for improving the descaling of the steel strip S is arranged and a drying device 20 for heating and drying the lower surface side of the steel strip coated with the solution is arranged between the coating device 16 and the inlet side of the annealing furnace 5. By this method, after forcedly pre-drying the solution on the steel strip surface, the steel strip S is carried into the annealing furnace 5 and annealed. The defective product surface developed by unevenly scraping out the undried solution with the hearth roll in the furnace can be prevented.

10. 发明专利

JPH0959714A METHOD FOR CONTINUOUSLY ANNEALING AND PICKLING COLD-ROLLED STAINLESS STEEL STRIP 失效
公开(公告)号：JPH0959714A
公开(公告)日：1997-03-04
申请号：JP21766795
申请日：1995-08-25
申请人： KAWASAKI STEEL CO
发明人： SUMINAGA TOMOTAKE , KATSURA SHIGEFUMI , SHIMIZU MASUHITO , NITO TAKASHI , IKEDA MASAHARU
IPC分类号： C21D1/70 , C21D9/56 , C23G3/02
摘要： PROBLEM TO BE SOLVED: To obtain a method, by which the wettability on the surface of a steel strip just before applying an antioxidant is improved and the antioxidant can uniformly be applied, in a continuous annealing and pickling method of a cold-rolled stainless steel strip having the antioxidant applying process before the annealing process. SOLUTION: A flame treatment device 6 is arranged just before an antioxidant applying device 7. In this flame treatment device 6, line burners L extended in the width direction of the steel strip S are arranged so as to put the combustion flame of gas onto the surface of the steel strip S. Dirt of oil, etc., stuck to the surface of the steel strip S is burned off by this combustion flame.

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