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101. 发明专利

JP2713003B2 失效
公开(公告)号：JP2713003B2
公开(公告)日：1998-02-16
申请号：JP7493092
申请日：1992-03-31
IPC分类号： B21B37/76 , B21B37/00 , B21B45/02 , C21D9/573

102. 发明专利

JP2667340B2 失效
公开(公告)号：JP2667340B2
公开(公告)日：1997-10-27
申请号：JP19275792
申请日：1992-06-29
IPC分类号： B21B37/00 , B21B37/76 , B21B45/02 , B21C51/00

103. 发明专利

JPH09271821A REMOVAL METHOD BY COOLING OF SKID MARK COMPONENT 失效
公开(公告)号：JPH09271821A
公开(公告)日：1997-10-21
申请号：JP8777696
申请日：1996-04-10
申请人： NIPPON STEEL CORP
发明人： HIRAISHI YUICHI , AKAZAWA RYOJI , MATSUDA MASAYOSHI , YAMAMURO MASASHI
IPC分类号： B21B45/00 , B21B37/00 , B21B37/76 , B21B45/02 , C21D1/00
摘要： PROBLEM TO BE SOLVED: To remove the skid mark by providing a header having a plurality of water injection nozzles between preceding stage stands and executing opening/ closing of nozzles with a solenoid valve so as to partially cool a rolling stock. SOLUTION: Between preceding stage stands of a hot finishing mill, plural cooling water headers 7, in which plural cooling water injection nozzles 8 are arranged in the width direction at a prescribed interval, are arranged at a prescribed interval. A three way selector solenoid valve 22 connected to an air supply pipe 23 and air exhaust pipe 24 is arranged at the upper part of header 7. By switching the three way solenoid valve 22 to switch air supply to a cylinder chamber 18 and supply air, a stop valve 15 closes a cooling water passage 13 by compressing a coil spring 19 to be switched to air exhaust and a cooling water passage 13 is opened. By this method, on/off of cooling water injection from the cooling water injection nozzles 8 to rolling stock is executed in high response, the rolling stock is partially cooled, the skid mark of rolling stock is removed.

104. 发明专利

JPH09248613A ROLLING METHOD OF COLD TUNDEM ROLLING MILL 失效
公开(公告)号：JPH09248613A
公开(公告)日：1997-09-22
申请号：JP6086396
申请日：1996-03-18
申请人： NIPPON STEEL CORP
发明人： SHIRAISHI TOSHIYUKI , OGAWA SHIGERU , HAMAUZU SHUICHI
IPC分类号： B21B37/00 , B21B37/46 , B21B37/48 , B21B37/74 , B21B37/76
摘要： PROBLEM TO BE SOLVED: To obtain an effective cold tundem rolling mill without developing heat scratch by calculating the tension in a stand so that a sheet temp. in a foil biting in the stand becomes a limited value or lower and controlling the tension in the stand based on this value. SOLUTION: In the forth stand, in which the heat scratch is easily developed on the sheet surface, an estimated temp. Tf of the sheet at the outlet side and a heat scratch control target temp. TL are compared, and in the case of the positive value in ΔT=TL-Tf since there is no possibility of developing the heat scratch, the rolling is continued as it is. Then, in the case of being the negative value in ΔT=TL-Tf , since there is possibility of developing the heat scratch, the tension condition is changed so that ΔT becomes the positive value, and the rolling is executed.

105. 发明专利

JP2653618B2 失效
公开(公告)号：JP2653618B2
公开(公告)日：1997-09-17
申请号：JP33190592
申请日：1992-12-11
申请人： SHINNIPPON SEITETSU KK
发明人： ITO NOBUAKI , KOMORI SHIGEYUKI , UEDA TOYOHIKO , KITAO SATOSHI
IPC分类号： B21B37/00 , B21B37/76 , B21B45/02

106. 发明专利

JPH09164413A METHOD AND DEVICE FOR CONTROLLING SPRAY 失效
公开(公告)号：JPH09164413A
公开(公告)日：1997-06-24
申请号：JP32537395
申请日：1995-12-14
申请人： HITACHI LTD , HITACHI INF & CONTROL SYST
发明人： KATO YASUKI , TAKAHASHI OSAMU , FURUKAWA HARUYUKI , ADACHI EIJI , WATABIKI TAKASHIGE , YAMAGUCHI MITSUO , KUMAYAMA HARUYOSHI , OTSUKA YUSAKU
IPC分类号： B21B45/02 , B21B37/00 , B21B37/76 , C21D9/52 , C21D11/00
摘要： PROBLEM TO BE SOLVED: To perform the set-up through the linear regression of the transformation heat and the specific heat by superposing the transformation heat on the specific heat curve of a material to be cooled, and approximating the specific heat curve to which the transformation heat is superposed by the broken line in controlling the spray. SOLUTION: In a spray cooling equipment of a hot rolling system, a parameter generating mechanism 10 is provided with the specific heat curve generating function 7 to perform linear approximation of the specific heat using the information of the physical properties of the database 13, the transformation heat curve generating function 8 to perform linear approximation of three points of the transformation curve using the information on the physical properties of the database 13, and the specific heat curve generating function 9 taking into consideration the transformation heat which synthesizes the parameters generated by the functions 7, 8 to generate the specific heat curve taking into consideration the transformation heat. The specific heat linear generating function 7 performs the linear approximation of the specific heat. The specific heat relationship taking into consideration the transformation heat is obtained by the transformation heat curve generating function 8 to consider the transformation heat associated with the composition change in iron. Linear approximation is performed by three points using the specific heat curve 9 considering the transformation heat to perform the regression.

107. 发明专利

JPH0957303A CONTINUOUS HOT ROLLING EQUIPMENT 失效
公开(公告)号：JPH0957303A
公开(公告)日：1997-03-04
申请号：JP21311495
申请日：1995-08-22
申请人： NIPPON STEEL CORP
发明人： SENUMA TAKEHIDE
IPC分类号： B21C47/00 , B21B1/26 , B21B15/00 , B21B37/76 , B21B39/12 , C21D8/04 , C21D9/68
摘要： PROBLEM TO BE SOLVED: To attain characteristics which are obtained only by off-line annealing of a hot rolled sheet until now on-line in a hot rolling stage and to reduce manufacturing cost by providing devices having coiling and uncoiling functions just after finish rolling in continuous hot rolling equipment. SOLUTION: In the continuous hot rolling equipment composed of a heating furnace, roughing mill proup, finishing mill group, run out table and coiling device group, the devices 2a, 2b having coiling and uncoiling functions are provided in an adjacent relation within 30m from the outlet side of the finishing mill group 1. The tip of a steel sheet uncoiled with the uncoiling device 2b is mechanically grasped and pulled at high speed with a device 4 for pulling by the tension of the degree to which wrinkles are not generated on the steel sheet until just before the steel sheet is coiled with the final coiling device 5. In this way, the continuous hot rolling equipment provided with a device which is freely advanced and retreated for suppressing fluttering in the tip of sheet and enabling high-speed and stable cooling connection is obtained.

108. 发明专利

JPH0919712A DEVICE FOR CONTROLLING COOLING OF STEEL SHEET 失效
公开(公告)号：JPH0919712A
公开(公告)日：1997-01-21
申请号：JP18666395
申请日：1995-06-30
申请人： NIPPON STEEL CORP
发明人： TAZAKI FUMITADA
IPC分类号： B21B45/02 , B21B37/00 , B21B37/76 , C21D1/00 , C21D9/52 , C21D11/00
摘要： PURPOSE: To execute good control of coiling temp. by determining the number of water-injection nozzles in a fine adjustment water-injection cooling zone only when the measured value with an intermediate thermometer is higher than the estimating value of steel sheet temp. and water-injection control is not executed in the fine adjustment water-injection cooling zone when the steel sheet temp. which is affected by disturbance is measured rather low. CONSTITUTION: The temp. difference ΔT between the estimated values of the steel sheet temp. in the position where the intermediate thermometer 8 is provided, which is calculated from the pattern (g) of water injection that is determined with a water-injection pattern control part 22 and a predicted speed (m) of the steel sheet from a host computer 25 and the measured value of intermediate temp. which is measured with the intermediate thermometer 8 is determined with a correction amount calculating part 24 and, when the measured value (h) with the intermediate thermometer is higher than the estimated value S of the steel sheet temp., the temp. difference ΔT is corrected using the water-injection nozzles in the fine adjustment water-injection cooling zone 4. When the measured value (h) with the intermediate thermometer is lower than the estimated value S of the steel sheet temp., the measured value (h) with the intermediate thermometer is replaced with the estimated value S of the steel sheet temp., the correction of the temp. difference ΔT using the water-injection nozzles in the fine adjustment water-injection cooling zone 4 is not executed.

109. 发明专利

JPH08333630A PRODUCTION OF HOT-ROLLED STEEL SHEET WITH REDUCED VARIATION OF QUALITY OF MATERIAL 失效
公开(公告)号：JPH08333630A
公开(公告)日：1996-12-17
申请号：JP16461695
申请日：1995-06-06
申请人： KOBE STEEL LTD
发明人： ANAMI GORO , TOYODA TETSUO
IPC分类号： B21B45/02 , B21B37/00 , B21B37/76 , C21D8/02 , C21D9/46
摘要： PURPOSE: To provide a producing method of a hot-rolled steel sheet, by which the calculated load is decreased and the variation of the quality of the material can sufficiently be restrained in an on-line control. CONSTITUTION: In the producing method of the hot-rolled steel sheet by acceleratedly rolling a steel slab heated up to an austenitic temp. range and successively cooling the steel sheet in a cooling zone 2 and thereafter, coiling the hot-rolled steel sheet. The cooling after rolling is controlled so that the residual austenitic strain at the Ac3 point of the steel sheet after rolling becomes uniform over the whole range from the front end part to the rear end part of the steel sheet. At this time, as a control method of cooling, a method for shifting the cool starting position P on the steel sheet 1 in the cooling zone 2 is preferably adopted.

110. 发明专利

JPH08323404A HOT ROUGH ROLLING METHOD AND HOT ROUGH ROLLING EQUIPMENT 失效
公开(公告)号：JPH08323404A
公开(公告)日：1996-12-10
申请号：JP13661895
申请日：1995-06-02
申请人： SUMITOMO LIGHT METAL IND
发明人： HOSHINO IKUYA , UENO JUNICHIRO
IPC分类号： B21B1/32 , B21B1/34 , B21B37/00 , B21B37/76 , B21B39/00 , B21B45/00
摘要： PURPOSE: To achieve the improvement of rolling efficiency while avoiding problems caused by heat generation by working in hot rough rolling. CONSTITUTION: When the temp. of a rolled stock 14 is raised by reciprocating rolling with a reversing roughing mill 10, the rough rolling is interrupted and, after the rolled stock 14 is guided in a temp. adjusting zone 24 and cooled, reciprocating rolling is again executed. In this way, rough rolling is executed by dividing it into plural stages and also, while the temp. of such a rolled stock 14 is adjusted in the temp. adjusting zone 24, rough rolling of other rolled stock is executed with the reversing roughing mill 10.

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