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21. 发明专利

JPH09263977A PRODUCTION OF THIN STEEL SHEET EXCELLENT IN SURFACE QUALITY 失效
公开(公告)号：JPH09263977A
公开(公告)日：1997-10-07
申请号：JP7789196
申请日：1996-03-29
申请人： KAWASAKI STEEL CO
发明人： SATO NAOYA , MUTO SHINICHIRO , AKIZUKI TOSHIO
IPC分类号： C21D9/46 , C23G1/08
摘要： PROBLEM TO BE SOLVED: To prevent the surface properties of a steel strip from being changed even in the case of being rolled for a long time by degreasing a cold rolled steel strip, immersing it in an acid soln. of specified pH, removing oxides remaining on the surface of the cold rolled steel strip, thereafter subjecting the same to continuos annealing and executing secondary cold rolling. SOLUTION: A cold rolled steel strip is degreased and is immersed in an acid soln. of pH

22. 发明专利

JPH09122716A METHOD FOR PREVENTING SHEET PASS MARK IN CONTINUOUS LINE OF ANNEALING AND SKIN PASS 失效
公开(公告)号：JPH09122716A
公开(公告)日：1997-05-13
申请号：JP28207995
申请日：1995-10-30
申请人： KAWASAKI STEEL CO
发明人： MATSUNAGA MITSUMASA , AKIZUKI TOSHIO , OGAWA MITSURU
IPC分类号： B21B28/04 , B21B1/22
摘要： PROBLEM TO BE SOLVED: To prevent sheet pass mark on the surface of a steel sheet without stopping a line or interrupting skin pass rolling stage by rolling a specified high-roughness material at the time of returning width. SOLUTION: At the time of returning width at the head of each cycle of skinpass rolling by which the width of a material 1 to be rolled is stepwise is reduced, it is scheduled so that the high-roughness material 2 of Ra=0.8-5.0μm is alloted. In this way, the threading part mark of a preceding cycle on the surface of back-up rolls is effectively removed and the sheet pass mark on the steel sheet which is passed through the continuous line of annealing and skin pass rolling is disappeared. Thus, conventional repair or change for removing the sheet pass mark of the back-up roll is unnecessitated.

23. 发明专利

JPH08176899A METHOD FOR ELECTROLYTICALLY CLEANING STEEL STRIP 失效
公开(公告)号：JPH08176899A
公开(公告)日：1996-07-09
申请号：JP32637594
申请日：1994-12-27
申请人： KAWASAKI STEEL CO
发明人： SATO NAOYA , ONO HIRONOBU , MUTO SHINICHIRO , AKIZUKI TOSHIO
IPC分类号： C25F1/06
摘要： PURPOSE: To provide a method with which a cleaned steel strip having excellent surface properties over its entire length can be obtained by appropriately setting the electrolysis conditions according to the traveling speed of the steel strip in the method for defatting and cleaning a steel strip with an alkali electrolytic cleaning device. CONSTITUTION: In this method, the alkali electrolytic cleaning of a steel strip is performed through maintaining the current density at 10A/dm when the traveling speed of the steel strip is low, i.e., when this traveling speed is high, i.e., >=100m/min. Thus, a high defatting and cleaning effect of the alkali electrolytic cleaning on the steel strip can be obtained regardless of the traveling speed of the steel strip.

24. 发明专利

JPH0847705A METHOD FOR REPAIRING ROLL IN PROCESSING EQUIPMENT FOR METALLIC STRIP AND DEVICE THEREFOR 失效
公开(公告)号：JPH0847705A
公开(公告)日：1996-02-20
申请号：JP18559194
申请日：1994-08-08
申请人： KAWASAKI STEEL CO
发明人： KAWAGUCHI GORO , ONO HIRONOBU , FURUKAWA YUJI , AKIZUKI TOSHIO
IPC分类号： B08B7/04 , B21B28/04
摘要： PURPOSE:To improve the quality and productivity of a steel strip by composing a device from a brush which is pressed against the surface of roll which is brought into contact with the steel strip, a counterweight for adjusting the pressing force of the brush and spray nozzles for jetting a detergent to the contact part between the brush and the roll. CONSTITUTION:The brush 3 is pressed against the surface of the roll 2 and the pressing force of the brush 3 is adjusted with the counterweight 4. By jetting a nonionic surfactant as a detergent on the contact part between the brush 3 and the roll 2 from a spray nozzle 5, thickened matters are dissolved, removal is promoted and also the wear of the brush and roll is decreased. Consequently, the surface flaw and meandering are not generated and the processing line is operated at the inherent line-speed. The nonionic surfactant is an agent in which water of about 10wt.% is added to polyoxyalkylenalkylether plus aliphatic hydrocarbon of totally about 90wt.%.

25. 发明专利

JPH04262803A QUENCHED AND TEMPERED ROLLING EQUIPMENT 失效
公开(公告)号：JPH04262803A
公开(公告)日：1992-09-18
申请号：JP2433391
申请日：1991-02-19
申请人： KAWASAKI STEEL CO
发明人： KOBAYASHI MAKOTO , KANETANI TETSUO , AKIZUKI TOSHIO
IPC分类号： B21B1/22 , B21B13/14
摘要： PURPOSE:To control the size of cross buckle (bellows) in the quenched and tempered rolling of a steel strip. CONSTITUTION:Because a variable crown roll 5 of which the roll crown is adjustable is provided as an auxiliary roll in the just rear of work rolls 3, an outward force (widening force) in the width direction of the steel strip 1 is added and an inward force (narrowing force) in the width direction at roll bite can be mutually canceled by making the roll crown concave in the case of large cross buckle.

26. 发明专利

JPH01207614A METHOD FOR MEASURING SHAPE OF STEEL PLATE 失效
公开(公告)号：JPH01207614A
公开(公告)日：1989-08-21
申请号：JP3100788
申请日：1988-02-15
申请人： KAWASAKI STEEL CO
发明人： MATSUBARA TSUTOMU , SHIMOYAMA YUJI , ONISHI TAKEO , AKIZUKI TOSHIO
IPC分类号： G01B11/24 , G01B21/20
摘要： PURPOSE:To measure steepness with high accuracy by measuring the apparent length of a steel plate which has a local extension part to a plane and then measuring the actual length of the steel plate after the local extension part is flattened. CONSTITUTION:A movable pair of a projector 3 and a photodetector 5 are suspended from a beam 6 provided above a surface plate 2 so that both end parts of the steel plate 1 can be detected. The light beam 4a projected by the projector 3 is reflected by the surface plate 2 and its reflected light 4b is detected by the photodetector 5. Then the steel plate 1 in a locally extended shape to be measured is mounted on the surface plate 2 first and while the projector 3 and photodetector 5 are moved in the width direction of the steel plate 1, the apparent length L0 of the steel plate 1 is measured. Then a weight is placed on the steel plate 1 and the actual length L1 is measured while the steel plate 1 is flattened. The apparent length L0 and actual length L1 are inputted to a steepness storage, arithmetic, and display device 7 at each time and stored, and the steepness is calculated from a specific expression while made to correspond to each measurement point, so that the result is displayed.

27. 发明专利

JPH01170505A METHOD FOR ROLLING BY USE OF DULL FINISH ROLL 失效
公开(公告)号：JPH01170505A
公开(公告)日：1989-07-05
申请号：JP33101987
申请日：1987-12-26
申请人： KAWASAKI STEEL CO
发明人： KIYONO YOSHIICHI , AKIZUKI TOSHIO , SATAKE YOSHIHIRO
IPC分类号： B21B27/00
摘要： PURPOSE:To prevent roll from welding, to eliminate restriction on operation, and to prolong the service life of a roll by brightly finishing body end parts of a work roll. CONSTITUTION:A length L1 from a body end having an easily weldable tendency in a roll body length L is covered with a body end cover 8. A part extending to a length of L-2L1 of a work roll 3 is formed into a prescribed roughened surface to be a dull roll with the roll 3 rotated at a proper speed by a spinner roll 9. Rolling is performed by assembling the worked dull roll into a six-high skin pass rolling mill. Increase of a thermal crown at the body ends is reduced and heat generated on a contact part with an intermediate roll is reduced, temp. rises at the body ends is restrained because friction heat is reduced by the dull roll surface, so that welding between rolls is prevented.

28. 发明专利

JPS56139230A L CAMBER CONTROL METHOD OF BLACKPLATE FOR GALVANIZING OR THE LIKE 失效
公开(公告)号：JPS56139230A
公开(公告)日：1981-10-30
申请号：JP4131680
申请日：1980-03-31
申请人： KAWASAKI STEEL CO
发明人： AKIZUKI TOSHIO
IPC分类号： B21D1/02 , B21D1/05
摘要： PURPOSE:To maintain a titled L camber value at a constant low value by moving an anticorrugating roll to the same extent cooperatively with the movement of an anticrimpling roll 3 in the sheet gage direction on the outlet side of a skin-pass mill. CONSTITUTION:An anticrimping roll 3 is disposed at the same height as that of the 2nd stand 1 of a 2-stand skin-pass mill, and an anticorrugating roll 4 is disposed to the same height at that of the upper roll of a tension bridle 5. In this state, a blackplate 2 for galvanizing is passed, and the C camber produced in the stock sheet 2 during skin pass is detected between the stand 1 and the bridle 5. The C camber is stabilized by controlling the position of the roll 3. The movement of the roll 3 is controlled in observing the occurence of lengthwise streaks and bellows. At this time, a clutch 13 is held connected and the rolls 3, 4 are cooperatively moved; the roll 4 is moved upward or downward to the same extent as that of the movement of the roll 3 in the sheet gage direction, whereby the L camber value is maintained always at a constant and stable value.

29. 发明专利

JPH0669566B2 失效
公开(公告)号：JPH0669566B2
公开(公告)日：1994-09-07
申请号：JP25232187
申请日：1987-10-08
申请人： KAWASAKI STEEL CO
发明人： SHIMOYAMA JUJI , MATSUBARA TSUTOMU , AKIZUKI TOSHIO , OONISHI TAKEO , WAKUI YOKICHI
IPC分类号： B21B1/22 , B21B27/00

30. 发明专利

JPH04327112A PACKAGING METHOD FOR STEEL SHEET COIL 失效
公开(公告)号：JPH04327112A
公开(公告)日：1992-11-16
申请号：JP11209591
申请日：1991-04-18
申请人： SHINWA CORP KK , KAWASAKI STEEL CO
发明人： MITSUDA TERUO , YAMAKAWA MASAO , IWATA MASAO , MORI TADAKUNI , KOKADO FUMIO , AKIZUKI TOSHIO , SHONO YASUYUKI
IPC分类号： B65B11/02 , B65B25/14
摘要： PURPOSE:To perform packaging with sufficient rust proof property and protection against damage without rotating a steel sheet coil. CONSTITUTION:The end surface and inner periphery of a steel sheet coil is wrapped first using an end face abutment soft board 1, which is equipped with an inserting cylinder 4 to be welded to the inner periphery of a hollow part of a steel sheet coil, at the center of an annular disk 2, and then, an outer peripheral paper 10 is wound around the coil without rotating the coil, and both side edges are gather-folded 12. For a more complete packaging, an overlapping board 14 is applied on the end surface, and an outer peripheral board 14 and outer peripheral thin iron sheet 20 are applied on the peripheral surface, and an edge tape 22 are wound on both edges to fix the whole body. In order to make it more complete, the whole outer surface is covered and protected by end caps made of metal and inner peripheral iron sheets.

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