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11. 发明专利

JPH11347622A DESCALING DEVICE AND ITS METHOD 失效
公开(公告)号：JPH11347622A
公开(公告)日：1999-12-21
申请号：JP15409698
申请日：1998-06-03
申请人： KAWASAKI STEEL CO
发明人： SUMINAGA TOMOTAKE , SHIMIZU MASUHITO
IPC分类号： B21B45/08 , C23G3/00
摘要： PROBLEM TO BE SOLVED: To remove oxide scales even if they are difficult in peelability by overlapping high-pressure water from nozzles adjacent to each other in a carrying direction of a steel plate, and setting a header to be turnable around its axis. SOLUTION: Each header 2 is extended in the width direction of a steel plate 1, and each header 2 is provided with plural nozzles 3 arranged along the width direction of the steel plate. The axes of these arranged nozzles 3 are alternately set so that the nozzles 3 adjacent to each other are alternately inclined in opposite directions by inverting the jet angle θ to the positive/ negative vale with the leading jet from one nozzle 3 and the following jet from the other nozzle 3. The header 2 on which the nozzles 3 are arranged is turnable around the center O of the header, and the impact of an outlet side spray is surely propagated to the steel plate since a stored water is not interfered with a high-pressure water 4.

12. 发明专利

JPH11267740A DESCALING DEVICE 失效
公开(公告)号：JPH11267740A
公开(公告)日：1999-10-05
申请号：JP7430698
申请日：1998-03-23
申请人： KAWASAKI STEEL CO
发明人： SHIMIZU MASUHITO , SUMINAGA TOMOTAKE
IPC分类号： B21B45/08 , C23G3/00
摘要： PROBLEM TO BE SOLVED: To improve the scale removal efficiency of spray lap parts by inverting the high-pressure water injection angles of adjacent nozzles to positive and negative with each other and setting the spraying width of the respective nozzles of one among the nozzle groups narrower than the spraying width of the other nozzles. SOLUTION: The plural nozzles 4 are arrayed at equal intervals along the transverse direction W of a steel sheet. The injection axes thereof are so set that one nozzle is attack injection and the other is follow injection by inverting the injection angles of the adjacent nozzles 4 to positive and negative with each other and inclining the nozzles in directions opposite to each other. The high-pressure water 5 injected from the respective adjacent nozzles 4 is so set as to overlap on each other in the transverse direction W of the sheet. At this time, the spraying width A2 of the follow injection side is set narrower than the spraying width A1 on the attack injection side. As a result, the influence by the stagnating water 6 of the outlet side injection spray 5b is drastically lessened and the water is directly collided against the steel sheet 1 surfaces. The scale removal effect by the impact force thereof is enhanced.

13. 发明专利

JPH1085811A METHOD FOR ZERO-REGULATION IN LEVELING OF HOT ROLL FINISH ROLLING MILL 失效
公开(公告)号：JPH1085811A
公开(公告)日：1998-04-07
申请号：JP24994096
申请日：1996-09-20
申请人： KAWASAKI STEEL CO
发明人： SUMINAGA TOMOTAKE , SHIMIZU MASUHITO , FUKUI YOSHIMITSU
IPC分类号： B21B31/32 , B21B37/00
摘要： PROBLEM TO BE SOLVED: To improve the accuracy of the zero regulation in the leveling by reducing the coefficient of friction between rolls to reduce the thrust, and reducing the variance in the differential load of the zero regulation in the leveling. SOLUTION: The differential oil column in a condition where the gap between rolls is parallel during the actual rolling by a hot finish rolling mill is compared with the differential oil column during the zero regulation when the oil is applied. As indicated in the figure, variance in the differential oil column during the zero regulation is small, and matches with the differential oil column during the rolling due to regulation of the target differential load. In the zero regulation in the leveling when work rolls are re-assembled, the accuracy of the zero regulation in the leveling can be improved by applying oil to the rolls to reduce the coefficient of friction between the rolls. Though a large volume of oil is required because oil is burned during the rolling, a small amount of oil is sufficient for the zero regulation and application of oil during the zero regulation raises no problem in the oil consumption.

14. 发明专利

JPH0839129A DESCALING DEVICE IN HOT ROLLING STEEL PRODUCT 失效
公开(公告)号：JPH0839129A
公开(公告)日：1996-02-13
申请号：JP17853294
申请日：1994-07-29
申请人： KAWASAKI STEEL CO
发明人： SUMINAGA TOMOTAKE , ADACHI AKIO , TAKEYA AKIHIKO
IPC分类号： B21B45/08
摘要： PURPOSE:To prevent generation of edge drops and scabs by constituting a descaling device in such a manner that high-pressure water at the time of descaling is not concentrated to one edge of steel product. CONSTITUTION:This descaling device in hot rolling of the steel product is constituted to remove the scale on the surfaces of the steel product 4 by injecting the high-pressure water thereto in a direction approximately opposite to the progressing direction of the steel product. The twist angles with the progressing direction of the steel product of injection nozzles 3a, 3b mounted at a header 1 arranged in the transverse direction of the steel product are directed to the inner side with each other with the center in the transverse direction of the steel product as a border.

15. 发明专利

JP2000271620A METHOD FOR ADJUSTING ZERO IN LEVELING OF ROLLING MILL 失效
公开(公告)号：JP2000271620A
公开(公告)日：2000-10-03
申请号：JP7896799
申请日：1999-03-24
申请人： KAWASAKI STEEL CO
发明人： SUMINAGA TOMOTAKE , SHIMIZU MASUHITO
IPC分类号： B21B37/00 , B21B13/14 , B21B31/20
摘要： PROBLEM TO BE SOLVED: To improve the accuracy of zero adjustment in leveling of a screw- down location by adjusting the rolling-down locations of the rolling-down device on the drive side and the rolling-down device on the work side so that the difference between the total value of the upper load on the work side and lower load on the same and the total value of the upper load on the drive side and lower load on the same is in a prescrived range. SOLUTION: The next relationship is effected from the relationship between the force received with the bearing of each roll and thrust force. ΔP=(1/2). (Po up + Po down)-(Pd up + Pd down)}. Where, ΔP is a load excessly applied to the work side because the leveling is not matched, Po up and Po down are rollingdown forces imparted to roll chocks 3, 9 on the work side from the rolling-down device on the work side and Pd up and Pd down are rolling forces imparted to the roll chocks 4, 10 on the drive side from the rolling-down device on the drive side. Then, by respectively detecting the rollingdown forces Po up, Po down, Pd up, Pd down and making the value of difference load ΔP fall in a specified range, the leveling is optimized.

16. 发明专利

JPH11347621A DESCALING DEVICE 失效
公开(公告)号：JPH11347621A
公开(公告)日：1999-12-21
申请号：JP15176198
申请日：1998-06-01
申请人： KAWASAKI STEEL CO
发明人： SUMINAGA TOMOTAKE , SHIMIZU MASUHITO
IPC分类号： B21B45/08 , C23G3/00
摘要： PROBLEM TO BE SOLVED: To remove oxide scale after rolling even in the case of hardly peelable scale by overlapping high pressure waters to each other from adjacent nozzles viewing from a steel plate transported direction and making an inlet side injection angle of the nozzle inclined alternately in the opposite direction larger than an outlet side injection angle. SOLUTION: Respective headers 2 are extended in the width direction of a steel plate 1, the nozzles 3 to each other adjacent to the axes of plural nozzles 3 which are arranged to the header 2 along the steel plate direction, are inclined alternately in the opposite direction. Its nozzle angles are alternately arranged and set so that an outlet side injection angle θd of an outlet side injection spray 4b and an inlet side injection angle θe of an inlet side injection spray 4a become θe>θd. Further, high pressure water 4 injected from the respective nozzles 3 are injected in the plate width direction with the prescribed spray width and the respective high pressure waters 4 injected from the adjacent nozzles 3 are set to overlap each other in the plate width direction.

17. 发明专利

JPH0987751A METHOD FOR SUPPORTING STEEL STRIP IN CATENARY TYPE FURNACE AND SUPPORTING ROLLER 失效
公开(公告)号：JPH0987751A
公开(公告)日：1997-03-31
申请号：JP24906595
申请日：1995-09-27
申请人： KAWASAKI STEEL CO
发明人： SUMINAGA TOMOTAKE
IPC分类号： C21D9/56
摘要： PROBLEM TO BE SOLVED: To provide a supporting method for steel strip in a catenary type furnace and to provide a supporting roller. SOLUTION: A stainless steel strip 11 without causing any flaw except the end parts can be produced by using the supporting rollers 12 provided with tapered parts housing upward gradient toward the end part in its cross sectional shape at both end parts to support the stainless steel strip 11 in the catenary type furnace for continuously annealing the stainless steel strip.

18. 发明专利

JPH0770649A PRODUCTION OF HOT ROLLED STEEL SHEET EXCELLENT IN STRETCH-FLANGE FORMABILITY, DUCTILITY AND SURFACE PROPERTY 失效
公开(公告)号：JPH0770649A
公开(公告)日：1995-03-14
申请号：JP21866293
申请日：1993-09-02
申请人： KAWASAKI STEEL CO
发明人： KANEMOTO NORIO , MATSUBAYASHI CHISATO , KATAOKA KUNIHIKO , SUMINAGA TOMOTAKE
IPC分类号： C21D8/02 , C21D9/46 , C22C38/00 , C22C38/04
摘要： PURPOSE:To obtain a hot rolled steel sheet of a specified strength level excellent in workability by heating Si strengthened steel having a specified compsn., thereafter subjecting it to rough rolling, specifying the temp. of the slab on the inlet side of a finishing mill, subjecting it to descaling by high pressure water under a specified collision pressure and executing finish rolling and coiling at specified temps. CONSTITUTION:Steel contg., by weight, 0.02 to 0.15% C, 0.2 to 1.0% Si, 0.5 to 1.5% Mn, collision pressure. Next, it is subjected to finish rolling at a finishing temp. of the Ar3 transformation point or above and is thereafter coiled at 400 to 600 deg.C. By this method, the hot rolled steel sheet of 45 to 55kgf/mm strength level excellent in workability can stably be obtd. without deteriorating its surface properties.

19. 发明专利

JPH0768310A HOT ROLLING MILL 失效
公开(公告)号：JPH0768310A
公开(公告)日：1995-03-14
申请号：JP21863993
申请日：1993-09-02
申请人： KAWASAKI STEEL CO
发明人： SUMINAGA TOMOTAKE , ADACHI AKIO , KANARI SHOHEI , MATSUMOTO MASAJI , KAWASHIMA KOJI , GOTO FUTOSHI
IPC分类号： B21B27/10 , B21B45/02 , B21B45/08
摘要： PURPOSE:To alleviate the thermal load of a roll and to reduce the generation of scale scratches by providing a sheet bar cooling header arranged on the inlet side of a mill bite, a hydraulic rolling header and a roll coolant header. CONSTITUTION:The sheet bar cooling header 1 for cooling the plate surface of a rolled stock 10, an oil rolling header 2 separated by a de-watering wiper 4 and the roll coolant header 3 are provided adjacently to the mill bite of an upper roll 21a and a lower roll 21b. The roll is cooled by the roll coolant header 3 to alleviate the thermal load of the roll, lubrication rolling is performed by the oil rolling header 2, heat generation and roll load are alleviated by the reduction of a friction coefficient, further, the plate surface of the rolled stock is cooled by the sheet bar cooling header 1 to reduce the thermal load of the roll. As a result, the roll can be free from rough surface, further, since the surface temperature of the rolled stock is lowered, local generation of the secondary scale is dissolved and scale scratches are prevented from occurring.

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