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1. 发明专利

JPS62267466A COOLER FOR BANK STEEL 失效
公开(公告)号：JPS62267466A
公开(公告)日：1987-11-20
申请号：JP10777486
申请日：1986-05-13
申请人： MITSUBISHI HEAVY IND LTD , NISSHIN STEEL CO LTD
发明人： FURUKAWA HEIZABURO , SEKIGUCHI YASUAKI , SUZUKI SHIRO , MENDA SHIGEMI , HAYASHI NOBUHIKO , MORIYAMA YOSHITERU , NAGAMEGURI SEIICHI
IPC分类号： C21D9/573 , C21D11/00 , C23C14/14 , C23C14/16 , C23C14/24 , C23C14/54 , C23C14/56
摘要： PURPOSE:To enable a uniform or smooth temp. distribution by inclining a partition plate in a plenum chamber to the passing direction of band steel, and changing the cooling rate of the band steel, in the widthwise direction to eliminate the temp. difference in the widthwise direction. CONSTITUTION:A cooling gas is supplied into a couple of plenum chambers 13 which are provided on both sides of a band steel 3 passing part with injection nozzles 14 opposed to each other, and injected from the nozzles 14. The partition plates 15 in the plenum chambers 13 are inclined to the passing direction of the band steel 3 to separate the chamber into >=3 chambers. A temp. detector 24 for the band steel 3 is furnished in the vicinity of the outlet of the chamber 13. the quantities of cooling gas to be supplied to the chambers 16a-e are controlled by means of cooling capacity adjusting devices 21a-e based on the result of the detector 24.

2. 发明专利

JPS62218565A SEALING METHOD IN VACUUM DEPOSITION PLATING 失效
公开(公告)号：JPS62218565A
公开(公告)日：1987-09-25
申请号：JP5943086
申请日：1986-03-19
申请人： NISSHIN STEEL CO LTD , MITSUBISHI HEAVY IND LTD
发明人： MORIYAMA YOSHITERU , ITO TAKEHIKO , HAYASHI NOBUHIKO , AIKO TAKUYA , NAKANISHI KOJI , FURUKAWA HEIZABURO , SEKIGUCHI YASUAKI , TAUCHI KUNIAKI , MENDA SHIGEMI
IPC分类号： C23C14/56 , C21D9/56
摘要： PURPOSE:To prevent the formation of roll flaws on the surface of a steel strip without spoiling a sealing effect by maintaining the space between sealing rolls larger by a specific amt. than the thickness of the steel strip in vacuum sealing chambers successively provided to a vacuum deposition chamber. CONSTITUTION:The steel strip is successively passed through a pretreatment furnace 2, a gas cooling chamber 3, a pressurizing chamber 4, the 1st vacuum sealing chamber 5, the 1st vapor deposition chamber 6, an intermediate vacuum sealing chamber 7, the 2nd vapor deposition chamber 8, the 2nd vacuum sealing chamber 9, and a cooling chamber 10, by which the steel strip is subjected to plating on both faces. The vertical space between the sealing rolls 12 provided to the respective vacuum sealing chambers 5, 7, 9 is set larger by a max. 0.5mm than the thickness of the steel strip 1. The information on the thickness of the steel strip 1 is preliminarily inputted to a process control part and further the information on tracking of a weld point is inputted thereto as a method for adjusting the space between the sealing rolls. The process control part transmits a control signal to a driving motor 20 in accordance with the above- mentioned vacuum deposition and a jack 21 is vertically moved to vertically move roll chocks 23, by which the space between the sealing rolls 22 is adjusted.

3. 发明专利

JPS62185885A HORIZONTAL ALLOYING FURNACE FOR PLATED STEEL SHEET 失效
公开(公告)号：JPS62185885A
公开(公告)日：1987-08-14
申请号：JP2592486
申请日：1986-02-10
申请人： NISSHIN STEEL CO LTD
发明人： HAYASHI NOBUHIKO , ITO TAKEHIKO , MORIYAMA YOSHITERU
IPC分类号： C25D5/50 , C23C2/28 , C23C14/56 , C23C14/58 , C23C26/00 , C23C30/00
摘要： PURPOSE:To permit easy installation of a titled furnace in a low building as well and to obtain a good alloyed layer with exact temp. control by successively disposing a heating section, soaking section and cooling section in the conveying direction of a steel strip respectively in horizontal types and providing non- contact supporting means for the steel strip. CONSTITUTION:The plated steel strip 1 is introduced via guide rolls 15 into the heating section 10 and is heated to the temp. necessary for alloying by adequate heating means such as electrical heaters 10a, etc. The temp. of the strip is made uniform and the plating surface is alloyed uniformly up to the surface thereof while the steel strip is passed through the soaking section 11. The steel strip 1 is supported and conveyed without contact and is cooled down to the temp. at which the generation of flaws is obviated even if the steel strip contacts the rolls in the succeeding cooling section 12. A floating system by ejection of the gas from gas ejecting nozzles 11 is more preferable as the above- mentioned non-contact supporting means. The soaking section 11 is segmented to plural pieces of the zones 11a, 11b, 11c... in the conveying direction and temp. control means are preferably provided to each of the blocks.

4. 发明专利

JPS60131959A PRETREATMENT FOR DRY GALVANIZING 失效
公开(公告)号：JPS60131959A
公开(公告)日：1985-07-13
申请号：JP24027783
申请日：1983-12-19
申请人： NISSHIN STEEL CO LTD
发明人： TAKAI SHIGEMITSU , HAYASHI NOBUHIKO , YAMAMOTO MASARU , HAYASHI YOSHIO
IPC分类号： C23C2/02 , C23C2/30
摘要： PURPOSE:To form a defectless plating layer having excellent adhesion even if stains of fats and oils stick on the surface of a steel material by forming the coated film of a flux soln. contg. a surface active agent on the surface of the steel material then subjecting the surface to galvanizing. CONSTITUTION:A steel sheet 1 unrolled from a payoff reel 10 is pickled by hydrochloric acid, etc. in a pickling tank 11 and after the pickling soln. sticking thereto is removed in a rinsing tank 12, the steel sheet is passed through a flux soln. tank 13. The steel sheet is immersed in a flux soln. consisting essentially of an aq. soln. of about 15 deg. Be' of ZnCl2 and NH4Cl and contg. at least about 0.1%, more preferably about 0.2-0.4% surface active agent, more particularly preferably nonionic surface active agent in said tank to form the coated film thereof on the surface. The sheet 1 coated with the flux soln. is passed through a drying furnace 4 and is dried by which the uniform flux layer is formed over the entire surface of the steel sheet 1. The pretreated steel sheet 1 is passed through a galvanizing cell 15 and is then taken up on a roll 16, by which the dry galvanized steel sheet having the defectless plating layer which is free from non- plating and pinholes, etc. and has excellent adhesion is obtd.

5. 发明专利

JPS6082652A GAS THROTTLING DEVICE 失效
公开(公告)号：JPS6082652A
公开(公告)日：1985-05-10
申请号：JP18698583
申请日：1983-10-07
申请人： NISSHIN STEEL CO LTD
发明人： KUBOTA MASAROU , ONO YOSHIO , HAYASHI NOBUHIKO , TAKAGI KAZUO
IPC分类号： C23C2/20
摘要： PURPOSE:To prevent uneven plating due to the clogging of a gas injection port with molten zinc by constituting a gas throttling device for blowing away excess molten zinc of a molten zinc plated steel strip of a rotatable external cylinder having the gas injection ports and an internal cylinder for supplying gas having a sealing member. CONSTITUTION:Excess molten zinc deposited on a zinc plated steel strip 3 coming out from a molten zinc plating bath 2 is blown away from both sides of the steel strip 3 with gas injection by a gas throttling device 1. The gas throttling device 1 is constituted of a circular external cylinder 5 having gas injection ports 8 and nozzles 9 which is rotatable in the circumferential direction, and of an internal cylinder 11 having at the inside a gas supply port 16 and a sealing member 17 on the opposite side. The pressurized gas supplied into the internal cylinder 11 is spouted from a nozzle 9 of the external cylinder 5 on the outer side to blow away excess molten zinc. When the port of the nozzle 9 is clogged by the deposition of molten zinc, the external cylinder 5 is turned to an angle of 180 deg. and the gas is injected from another new nozzle 9. In addition, the injection of the pressurized gas from the nozzle 9 not facing the steel strip 3 is prevented by the sealing member 17.

6. 发明专利

JPS648705B2 失效
公开(公告)号：JPS648705B2
公开(公告)日：1989-02-15
申请号：JP24027783
申请日：1983-12-19
申请人： NISSHIN STEEL CO LTD
发明人： TAKAI SHIGEMITSU , HAYASHI NOBUHIKO , YAMAMOTO MASARU , HAYASHI YOSHIO
IPC分类号： C23C2/02 , C23C2/30

7. 发明专利

JPS62182226A UNIFORM COOLING METHOD FOR STEEL STRIP IN CONTINUOUS ANNEALING FURNACE 失效
公开(公告)号：JPS62182226A
公开(公告)日：1987-08-10
申请号：JP2420186
申请日：1986-02-07
申请人： NISSHIN STEEL CO LTD
发明人： OHASHI KYOSUKE , ITO TAKEHIKO , HAYASHI NOBUHIKO , SAKO MITSUHIKO
IPC分类号： C21D9/573 , C21D11/00 , C23C14/56
摘要： PURPOSE:To make the transverse temp. of a steel strip passing in an adjusted cooling zone more uniform by segmenting the adjusted cooling zone of a continuous annealing furnace to a central part and both end parts in the transverse direction thereof and maintaining the heating temp. in both end parts higher than the heating temp. in the central part. CONSTITUTION:The adjusted cooling zone of the continuous annealing furnace is segmented to at least the central part and both end parts. The heating temp. in both end parts is maintained higher than the heating temp. in the central part and the steel strip passing the adjusted cooling zone is uniformly cooled in the transverse direction thereof. Cooling is executed in such a manner that the temp. difference of the steel strip between the central part and both end parts is kept within 15 deg.C by the above-mentioned method, by which the good plating surface having uniform and excellent adhesiveness is obtd. in the subsequent vacuum deposition plating. A thermometer for the steel strip is installed on the outlet side of the adjusted cooling zone to detect the temp. of the steel strip and the heating in the central part and both end parts of the steel strip is controlled in accordance with the detected value in the above-mentioned method, by which the automation of the above-mentioned uniform cooling method is made possible.

8. 发明专利

JPS5348024A METHOD OF SEPARATING TOP DROSS GENERATED IN DIP GALVANIZING WORKING 失效
公开(公告)号：JPS5348024A
公开(公告)日：1978-05-01
申请号：JP12288876
申请日：1976-10-15
申请人： NISSHIN STEEL CO LTD
发明人： TABUSE KENJI , HAYASHI NOBUHIKO , FUKUMOTO HIROMITSU
IPC分类号： C22B19/30 , C22B19/20 , C23C2/00

9. 发明专利

JPH0159357B2 失效
公开(公告)号：JPH0159357B2
公开(公告)日：1989-12-15
申请号：JP6453584
申请日：1984-03-30
申请人： NISSHIN STEEL CO LTD
发明人： HAYASHI NOBUHIKO , HAYASHI YOSHIO , OGASAWARA MASAO
IPC分类号： C23C22/73 , C23C22/82

10. 发明专利

JPS60208482A REMOVING METHOD OF TREATING LIQUID REMAINING AFTER CHEMICAL CONVERSION TREATMENT 失效
公开(公告)号：JPS60208482A
公开(公告)日：1985-10-21
申请号：JP6453584
申请日：1984-03-30
申请人： NISSHIN STEEL CO LTD
发明人： HAYASHI NOBUHIKO , HAYASHI YOSHIO , OGASAWARA MASAO
IPC分类号： C23C22/73 , C23C22/82
摘要： PURPOSE:To remove thoroughly the remaining chemical conversion liquid in the edge parts of a steel strip and to eliminate the uneven chemical conversion treatment in the stage of removing the chemical conversion liquid remaining on the steel strip subjected to the chemical conversion treatment by wringer rolls by directing exactly air nozzles to the edge parts of the steel strip detected by sensors. CONSTITUTION:A chemical conversion treating liquid remains on a steel strip S from a chemical conversion treating stage and therefore the steel strip is passed between wringer rolls 81 and 82 to remove the remaining liquid. The roll gaps corresponding to the thickness of the strip S are produced at both edges of the strip S in this case and the chemical conversion treating liquid remains in said parts, thus making the chemical conversion treatment uneven. The edges of the strip S are detected by an edge detector 3 for the steel strip consisting of plural light projecting phototube parts 31a-31d and photodetecting phototube parts 32a-32d shifted positionally each slightly in order to prevent the above-mentioned uneven treatment. A motor 4 is driven by the detection outputs therefrom to direct correctly the nozzles 71, 72 of an air sprayer 7 connected to the detector 3 toward the center of the edges of the strip S. The treating liquid remaining at the edges is thoroughly removed by the air ejected from the nozzles 71, 72.

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