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1. 发明专利

JPH01210110A DEVICE FOR CONTROLLING FLATNESS OF STRIP IN COLD ROLLING 失效
公开(公告)号：JPH01210110A
公开(公告)日：1989-08-23
申请号：JP3240388
申请日：1988-02-15
申请人： TOSHIBA CORP , KAWASAKI STEEL CO
发明人： CHIYOUKA MINORU , SEKIGUCHI KUNIO , SEKI YOSHIRO , HIROHATA KAZUHIRO , TOUYAMA SUSUMU , KURODA SHIGERU
IPC分类号： B21B37/32 , B21B37/00
摘要： PURPOSE:To rapidly remove local defects in flatness and to obtain a product having good flatness by controlling injection from coolant nozzle headers based on flatness detection results in plural roll coolant control regions segmented in the width direction of a strip. CONSTITUTION:A 1st coolant injection deciding means 31 and a 2nd coolant injection deciding means 32 are installed in the output side of a flatness deviation computing element 24. The element 24 calculates a deviation value of an actual detected flatness value found by a shape detector 22 from a previously decided target value. The deviation value is converted into a flatness deviation value corresponding to zone segmentation of coolant nozzle headers 20. The 1st means 31 processes the flatness deviation value to output a 1st coolant flag. Also, the 2nd means 32 processes the deviation value to output a 2nd coolant flag. Both the flags are inputted to a 3rd coolant injection deciding means 33 to output a coolant open-and-close signal for each coolant injection solenoid valve 21 decided as a logical sum.

2. 发明专利

JPH10128414A ROLL CHANGING DEVICE FOR ROLLING MILL 失效
公开(公告)号：JPH10128414A
公开(公告)日：1998-05-19
申请号：JP28624896
申请日：1996-10-29
申请人： KAWASAKI STEEL CO
发明人： GOTO SHUNJI , KURODA SHIGERU
IPC分类号： B21B31/10
摘要： PROBLEM TO BE SOLVED: To provide a roll changing device for rolling mills corresponding to the time of passing a sheet which is advantageous in the cost and installation space aspects at the time of new construction or modification, with which excess forec is not applied to the neck of the upper roll and the workability in crane handling is not hindered and which is suitable to automation. SOLUTION: The upper chock 5B on the driving side is supported by placing a upper wheel 94 on upper rails 13 on the side of the rolling mill 1 and, on the side of a roll truck 8 and receiving the upper end of the 2nd elevating/ lowering spacer 102 which takes the 3rd lower rail 12 as a foothold with the 2nd spacer receiver 112. Furthermore, under the connection of the side of the rolling mill 1 with the side of the roll truck 8, two supporting states are simultaneously obtained.

3. 发明专利

JPH07223013A METHOD FOR CONTROLLING INTERSTAND TENSION OF ROLLING MILL 失效
公开(公告)号：JPH07223013A
公开(公告)日：1995-08-22
申请号：JP1962394
申请日：1994-02-16
申请人： KAWASAKI STEEL CO
发明人： GOTO SHUNJI , KURODA SHIGERU , SAITO MOTONOBU
IPC分类号： B21B37/00 , B21B37/18 , B21B37/48
摘要： PURPOSE:To surely prevent the occurrence of the defect of thickness with tension control. CONSTITUTION:Tension (t) detected with a tensiometer 6 and circumferential speeds (v2), (v3) of roll of a stands S2, S3 are respectively fed to a screw-down controller 7 and the changing rate DELTAt of tension (t), deviation DELTAT of the tension (t) to the command value T, ratio between the actual circumferential speeds of rolls of the stand S2 and the stand S3, ratio of the command values between the circumferential speeds of the rolls above and the differences (indexes) of those ratios are calculated. Only when the value obtd. by multiplying the index by the changing rate DELTAt is positive, control command DELTAS having a magnitude that is proportioned to the deviation DELTAT is outputted to a screw-down adjusting device 8.

4. 发明专利

JPH07150332A METHOD FOR CARBURIZING STEEL STRIP 失效
公开(公告)号：JPH07150332A
公开(公告)日：1995-06-13
申请号：JP29546593
申请日：1993-11-25
申请人： KAWASAKI STEEL CO
发明人： MOROZUMI JIYUN , KURODA SHIGERU , SHIBUYA SATOSHI , NAKAGAWA FUTAHIKO
IPC分类号： C23C8/38 , C21D9/673
摘要： PURPOSE:To provide a carburizing method, by which the most surface layer part of a coiled steel strip is uniformly carburized instantaneously in a short period and the treatment can be executed even for a small quantity of the steel strip. CONSTITUTION:At the time of annealing the coiled steel strip 2 loosely wound by laying in the upending state in a box type annealing furnace 7 in a hydrocarbon gas atmosphere, the coiled steel strip 2 is made to be a negative pole and a positive pole 1 is arranged above the negative pole and plasma is generated instantaneously between both poles.

5. 发明专利

JPH05212310A REMOVAL OF IRON COMPONENT FROM ROLLING OIL 失效
公开(公告)号：JPH05212310A
公开(公告)日：1993-08-24
申请号：JP4614492
申请日：1992-01-31
申请人： NIPPON JIRYOKU SENKO , KAWASAKI STEEL CO
发明人： OKUDA KOSUKE , HANADA SHINICHIRO , NAITO TADASHI , KURODA SHIGERU
IPC分类号： B03C1/032 , B01D35/06 , B03C1/00
摘要： PURPOSE:To efficiently remove an iron component contained in rolling oil by enabling the removal of the iron component to which rolling oil is bonded, reducing the amount of a washing solution used at the time of backwashing and shortening a backwashing time. CONSTITUTION:An iron component is removed from rolling oil by a process supplying the rolling oil to be treated to a cylindrical body 11 having exciting coils 12 provided to the periphery thereof and storing a large number of magnetic spheres 14 to bond the iron component contained in the rolling oil to the excited magnetic spheres and a process stopping the rolling oil after the rolling oil is passed through the cylindrical body for a definite period to demagnetize the rolling oil and allowing a washing solution to flow to remove the bonded iron component. The washing solution is supplied while the magnetic spheres 14 are vibrated.

6. 发明专利

JPH0592283A METHOD AND APPARATUS FOR LASER BEAM MACHINING 失效
公开(公告)号：JPH0592283A
公开(公告)日：1993-04-16
申请号：JP25195091
申请日：1991-09-30
申请人： KAWASAKI STEEL CO
发明人： KURODA SHIGERU , NISHIGAMI KENJI
IPC分类号： B21B1/22 , B21B27/00 , B23K26/00 , B23K26/06 , G02B26/08
摘要： PURPOSE:To provide a laser beam machining method and its apparatus, in which energy of the laser beam irradiating the surface of a material, to be machined of a work roll, etc., used to finish conditioning rolling, etc., can easily be changed and the surface shape formed with this beam energy by this method can be changed and the structure thereof is simple. CONSTITUTION:By shifting each of three pieces of half mirrors 1a, 1b, 1c arranged on the beam passage of the laser beam G between a laser beam oscillator 14 and an irradiating head 15 to the directions progressed to out of the beam passage or returned back by shifting devices 2a, 2b, 2c to change the laser beam G quantity branched to the out of the beam passage through these half mirrors 1a, 1b, 1c, the energy of the laser beam G irradiating the surface of the work roll A from the irradiating head 15 is changed.

7. 发明专利

JPH04190136A PREPARATION OF ROLLING OIL SAMPLE FOR EVALUATION 失效
公开(公告)号：JPH04190136A
公开(公告)日：1992-07-08
申请号：JP31786090
申请日：1990-11-26
申请人： KAWASAKI STEEL CO , KYODO YUSHI
发明人： TAKEDA MINORU , HIRASE KOICHI , ONO TOMOMUTSU , KURODA SHIGERU , HINO ETSUJI , OIKAWA ISAO , SHIRATA MASANORI , SAKAKIBARA MASAYOSHI , SANO MIZUHO , OGAWA TAKASHI
IPC分类号： G01N1/36 , G01N1/28 , G01N33/30
摘要： PURPOSE:To reproduce the state almost same as the use state of an actual machine in a laboratory within a short time by charging a powder whose surface is activated of a metal to be rolled in rolling oil to be evaluated without coming into touch with the atmosphere to uniformly disperse the same in said rolling oil. CONSTITUTION:A powder whose surface is activated of a metal to be rolled is charged in rolling oil to be evaluated without coming into touch with the atmosphere to be uniformly dispersed therein. For example, in the case of iron, the particulate whose surface is activated of the metal to be rolled means one held to an activated state immediately generating combustion upon the contact with the atmosphere. Further, in order to accelerate the deterioration reaction of the rolling oil due to the metal powder, the surface of the metal powder is activated. The activated metal powder is charged in the rolling oil without being brought into contact with oxygen. Therefore, the activated metal powder is charged in the rolling oil in a non-oxidative atmosphere. The metal powder charged in the rolling oil is uniformly dispersed in the rolling oil or the rolling oil emulsion. By this operation, the entire surface of the metal powder can be brought into contact with the rolling oil.

8. 发明专利

JPS62203714A SIDE TRIMMING METHOD FOR STRIP-SHAPED PLATE MATERIAL 失效
公开(公告)号：JPS62203714A
公开(公告)日：1987-09-08
申请号：JP4678186
申请日：1986-03-04
申请人： KAWASAKI STEEL CO
发明人： KURODA SHIGERU , KOMATSU TOMIO , ETO KOJI
IPC分类号： B23D19/06
摘要： PURPOSE:To actuate a side trimming device to perform its follow-up motion in good accuracy even when a plate material width is smaller than its preset value, by detecting the plate width of a strip-shaped plate material, before it is cut, and calculating a difference from the preset plate width so as to move a trimming tool, in the case of a processing line for a hot rolled steel strip or the like. CONSTITUTION:A width BB of a steel strip 14, before it is cut, is detected by a plate width detector 34. The actually measured plate width BB is input to a width margin arithmetic unit 36. A width margin, which is obtained in the unit 36 from a difference between a preset plate width AA and the plate width BB, is compared with a limit side trimming margin, and a trimmer last stage arithmetic unit 38 is started. In this way, a shift driving gear 32 and a turn driving gear 30 are started via speed controllers 40, 42, and a side trimming device 10 performs trimming by its upper and bottom trimming tools of the steel strip 14 in good accuracy with no side out trimming and short side trimming.

9. 发明专利

JPH09323108A DEVICE FOR CONTROLLING DYNAMIC SETUP OF ROLLING MILL AND METHOD THEREOF 失效
公开(公告)号：JPH09323108A
公开(公告)日：1997-12-16
申请号：JP14306696
申请日：1996-06-05
申请人： HITACHI LTD , HITACHI INF & CONTROL SYST , KAWASAKI STEEL CO
发明人： OKADA TAKASHI , MOROOKA YASUO , SAITO YUTAKA , HATTORI SATORU , KATAYAMA YASUNORI , WATABIKI TAKASHIGE , HIROHATA KAZUHIRO , KURODA SHIGERU , MIZUSHIMA SHIGETO
IPC分类号： B21B37/00
摘要： PROBLEM TO BE SOLVED: To highly accurately decide the set value of each stand and to balance the rolling conditions at all the stands by providing a correction control part for executing the control of the operations of a 1st correction arithmetic part and 2nd correction arithmetic part. SOLUTION: From the measured values with a condition measuring part of the stands 1-1 in the early stage of a rolling mill and rolling stock information data, the rolling conditions of the stands 1-1 in the early stage of the rolling mill is estimated by a model 2. Using the estimated result by the model 2 and the measured result of the stands 1-1 in the early stage of the rolling mill, the set values of the stands 1-2 of the poststage of the rolling mill are corrected with the 1st correction arithmetic part 3. Furthermore, using the estimated result by the model 2 and the measured result of the stands 1-1 in the early stage of the rolling mill, correction set values which are optimum to all the stands of the rolling mill and in which the balance of power or the like is taken into consideration are determined with the 2nd correction arithmetic part 4. The operations of the 1st correction arithmetic part 3 and 2nd correction arithmetic part 4 are controlled with the correction control part 5.

10. 发明专利

JPH08294716A REDUCTION CONTROL METHOD IN TEMPER ROLLING 失效
公开(公告)号：JPH08294716A
公开(公告)日：1996-11-12
申请号：JP9906895
申请日：1995-04-25
申请人： KAWASAKI STEEL CO
发明人： KOTANI HIDEKI , KURODA SHIGERU , HIROYAMA KAZUTOSHI
IPC分类号： B21B37/00 , B21B37/62
摘要： PURPOSE: To prevent over reduction without imparting restraining force of metal strip by switching hydraulic reduction control mode from isobaric reduction load control mode to isobaric reduction position control mode in the case a difference between operating side and driving side is turned to larger than a prescribed set value. CONSTITUTION: The difference in operating side/driving side reduction position signals, which are measured by operating side and driving side reduction position detectors 13, 14, is operating by a measuring-comparision arithmetic unit 20 and is compared to the reducing position set value set beforehand. When a difference in reduction positions is larger than a prescribed value, a hydraulic reduction controller 30 controls hydraulic reduction in response to reduction position target with switching hydraulic reduction control mode from isobaric reduction load control mode to isobaric reduction position control mode. The difference in operating side/driving side rolling load signals, which is measured by operating side/driving side rolling load detectors 15, 16, is operated and is compared to reduction load set value, when a difference in reduction loads is smaller than the prescribed set value, the controller 30 executes hydraulic reduction control with switching hydraulic reduction control mode from isobaric reduction load mode to isobaric reduction position control mode.

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