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1. 发明专利

JPH07145500A METHOD FOR TRANSPORTING ZINC OXIDE THROUGH PIPELINE 失效
公开(公告)号：JPH07145500A
公开(公告)日：1995-06-06
申请号：JP29303893
申请日：1993-11-24
申请人： KAWASAKI STEEL CO
发明人： NAKANO HIROSHI , KURITA TOSHIRO , SAKURAI AKIO
IPC分类号： C25D21/14
摘要： PURPOSE:To receive zinc oxide directly into a hopper from a carrier by using a pipeline of specified material, specifying the amt. of transportation air, introducing auxiliary air under specified conditions on the way to the hopper and specifying the flow velocity of the air in the pipeline. CONSTITUTION:A SUS 304 internally polished pipe is used for the pipeline, and the volume ratio of the zinc oxide to air in the mixture is controlled to =2kgf/cm and at >=2Nm /min, and the flow velocity of the air in the pipeline is controlled to >=10m/sec. When the conditions are not fulfilled, the zinc oxide deposits in the pipeline, or the pipeline is clogged. Dust is not generated in the receiving operation, and a dangerous operation is eliminated.

2. 发明专利

JPH06340420A ZINC OXIDE EXCELLENT IN TRANSPORTABILITY AND ITS PRODUCTION 失效
公开(公告)号：JPH06340420A
公开(公告)日：1994-12-13
申请号：JP12743393
申请日：1993-05-28
申请人： KAWASAKI STEEL CO
发明人： NAKANO HIROSHI , MIZUTA TAMOTSU , SAKURAI AKIO , OKADA YASUHIDE , FUJII SHINGO
IPC分类号： B01J2/14 , C01G9/02 , C25D7/06 , C25D21/14
摘要： PURPOSE:To obtain zinc oxide excellent in transportability by granulating zinc oxide into granules having specified compaction degree and average diameter. CONSTITUTION:Zinc oxide is granulated by a pan pelletizer into granules having =50mum average diameter without using a binder, the zinc oxide is granulated by a pan pelletizer into the similar granules with a binder, or the lump is crushed into the similar granule. The bend of a pipeline is clogged at >=50% compaction degree when granular zinc oxide is used, and the pneumatic transportation of zinc oxide is hardly adopted. The compaction degree is defined by (tap density-bulk density)/tap density). The tap density is the density obtained by vibrating, compacting and sufficiently compressing the zinc oxide. Meanwhile, dusting, leakage, clogging, etc., are caused at

3. 发明专利

JPH06336699A METHOD FOR FEEDING ZINC ION TO PLATING SOLUTION 失效
公开(公告)号：JPH06336699A
公开(公告)日：1994-12-06
申请号：JP12743493
申请日：1993-05-28
申请人： KAWASAKI STEEL CO
发明人： NAKANO HIROSHI
IPC分类号： C25D7/06 , C25D21/14
摘要： PURPOSE:To easily and surely control the concn. of Zn ions with high precision by calculating the feed speed of Zn required for a material to be plated, determining the flow rate of a plating soln. from the pH of the plating soln. and controlling the putting speed of Zn and the flow rate of the plating soln. CONSTITUTION:A plating soln. in a Zn dissolution vessel 3 is circulated to a circulation tank 4, a plating soln. in the tank 4 is circulated to a plating vessel 6 and a strip S is plated. In this operation, the consumption speed of Zn ions is calculated by a prescribed equation from the width of the strip, coating weight and line speed, a starting material feeder 2 is controlled with a controller 12 and Zn is dissolved after putting in the dissolution vessel 3 at a putting speed corresponding to the calculated consumption speed of Zn ions. The flow rate of the plating soln. allowed to flow in the dissolution vessel 3 is determined from the objective pH of the plating soln. and a pump 5a is controlled with the controller 12 so as to attain the determined flow rate. By this method, plating with stabilized quality is always carried out.

4. 发明专利

JPH06316799A METHOD AND DEVICE FOR REDISSOLVING DEPOSITED NICKEL IN PLATING LIQUID 失效
公开(公告)号：JPH06316799A
公开(公告)日：1994-11-15
申请号：JP10413393
申请日：1993-04-30
申请人： KAWASAKI STEEL CO
发明人： NAKANO HIROSHI , MIZUMOTO KAORU
IPC分类号： C25D3/56 , C25D21/14 , C25D21/18
摘要： PURPOSE:To redissolve nickel deposited inks a plating liquid. CONSTITUTION:In a continuous Zn-Ni electroplating device using an insoluble anode, there are provided a solid-liquid separating means 10 for separating nickel deposited into a plating liquid from inside a circulating path constituted of piping 6, 7, 8 by which a dissolving tank 1 where metal zinc is dissolved in the plating liquid to replenish zinc ions and a plating liquid circulating tank 2 are connected, a redissolving tank 12 for redissolving the separated, deposited nickel, and a mixing means 15 for blowing gaseous oxygen through the plating liquid in the redissolving tank 12.

5. 发明专利

JPH0456734A COOLING ROLL OR HEARTH ROLL FOR CONTINUOUS HEAT TREATMENT FOR METAL STRIP 失效
公开(公告)号：JPH0456734A
公开(公告)日：1992-02-24
申请号：JP16678190
申请日：1990-06-27
申请人： KAWASAKI STEEL CO
发明人： NAKANO HIROSHI
IPC分类号： C21D1/00 , C21D9/56 , C21D9/573
摘要： PURPOSE:To inhibit thermal crown, to stabilize and uniformize strip temp., and to reduce wrinkles occurring in a strip by uniformizing the temp. of a metal strip by changing heat transfer between a roll surface and the metal strip in the strip-width direction in a cooling roll or hearth roll for continuous heat treatment for the metal strip. CONSTITUTION:This roll is a cooling roll or hearth roll for continuous heat treatment for a metal strip characterized by changing the form of a roll surface in the width direction so that the heat transfer between the roll surface and the metal strip is changed in the strip-width direction, and further, the form of the roll surface is changed in the width direction by providing regular ruggedness to the roll surface, preferably, by irradiating the roll surface with high energy pulse.

6. 发明专利

JPH03114686A METHOD AND APPARATUS FOR BUTT WELDING STEEL STRIPS THROUGH LASER BEAM 失效
公开(公告)号：JPH03114686A
公开(公告)日：1991-05-15
申请号：JP25443089
申请日：1989-09-28
申请人： KAWASAKI STEEL CO
发明人： TOMITA HIROKI , NAKANO HIROSHI , ONO TOMOMICHI , HIRASE KOICHI
IPC分类号： B23K26/21 , B21B15/00
摘要： PURPOSE:To surely and with high accuracy butt both steel strips after they are cut by cutting the opposite end parts of preceding and succeeding steel strips, then, giving tension to both these cut parts in the direction of the plate width rectangular to a steel strip bus line and butting them. CONSTITUTION:The rear end part of the preceding steel strip 1 and the front end part of the succeeding steel strip are faced to each other, these opposite end parts are clamped from the top and bottom and both opposite end parts are cut, e.g. by a double cut shear composed of upper and lower shears at the same time in the clamped state. Then, after such cutting, each cut surface 1a, 2a of the preceding and succeeding steel strips 1, 2 comprises a butt surface and forms a butt groove. At this time, tension is given to each cut surface 1a, 2a in the direction of the plate thickness rectangular to the bus line P of the steel strips, each of the opposite cut surfaces 1a, 2a is butted in this pulled state and the laser torch 3 is traveled along this butt groove to perform laser welding.

7. 发明专利

JPH07126898A MELTING METHOD FOR METAL ZINC FOR ELECTROPLATING 失效
公开(公告)号：JPH07126898A
公开(公告)日：1995-05-16
申请号：JP27066193
申请日：1993-10-28
申请人： KAWASAKI STEEL CO
发明人： NAKANO HIROSHI , MIZUMOTO KAORU , SEKIDA TAKASHI
IPC分类号： C25D21/14
摘要： PURPOSE:To take the prevention of the precipitation of metal nickel onto the surface of metal zinc immersed in a circulating plating soln. as a technical subject and thus to prevent deterioration in the nickel consumption unit. CONSTITUTION:As for sulfuric acid bath Zn-Ni electroplating using an insoluble anode, the average grain size of metal zinc grains immersed in a circulating plating soln. from a plating bath tank is set to

8. 发明专利

JPH06306696A RECOVERING METHOD FOR NICKEL INCORPORATED IN PLATING SOLUTION AND DEVICE THEREFOR 失效
公开(公告)号：JPH06306696A
公开(公告)日：1994-11-01
申请号：JP9420593
申请日：1993-04-21
申请人： KAWASAKI STEEL CO
发明人： NAKANO HIROSHI
IPC分类号： C22B23/00 , C25D5/12 , C25D7/06 , C25D21/14 , C25D21/18
摘要： PURPOSE:To recover nickel incorporated in a plating solution after changing over. CONSTITUTION:In continuous electroplating equipment by alternately plating zinc and zinc aluminum on a steel strip by using an insoluble anode, this device is constituted by providing a solid-liquid separating means 5 to separate a sludge in the plating solution at a circulating pipe line passage connecting a zinc dissolving vessel 3 to replenish zinc ion by dissolving metal zinc in the plating solution with a zinc plating solution circulating tank 6, a transferring means 7 to transfer the separated sludge and a redissolving vessel 7 having a stirring device 8 to charge the transferred sludge into the zinc nickel plating solution to redissolve.

9. 发明专利

JPH06136539A STRIP TRANSPORTING ROLL DEVICE 失效
公开(公告)号：JPH06136539A
公开(公告)日：1994-05-17
申请号：JP31303192
申请日：1992-10-28
申请人： KAWASAKI STEEL CO
发明人： OKADA YASUHIDE , NAKANO HIROSHI
IPC分类号： B21B39/00 , B65H20/02 , B65H23/038 , C23C14/56
摘要： PURPOSE:To maintain the adequate and uniform rolling reduction performance of a press roller and to drastically decrease the chances of maintenance so as to attain a cost reduction by automatically compensating liquid leakage. CONSTITUTION:This strip transporting roll device has the press roll 2 connected to a pressurizing device 5 and a pair of roll chocks 3 and a stationary side roll 1. A leakage compensating device 7 for compensating the leakage of liquid is connected to a conduit 66 for connecting both pressure regulating bodies 60 of a pressure regulating device 6 which receives the pressing reaction acting on the roll chocks 3 with the liquid, by which the liquid leakage of the pressure regulating device 6 is automatically compensated.

10. 发明专利

JPH06192897A METHOD AND DEVICE FOR DISSOLVING PLATING METALLIC MATERIAL 失效
公开(公告)号：JPH06192897A
公开(公告)日：1994-07-12
申请号：JP34591092
申请日：1992-12-25
申请人： KAWASAKI STEEL CO
发明人： NAKANO HIROSHI , FUJII SHINGO
IPC分类号： B22F9/04 , C25D21/14
摘要： PURPOSE:To easily convey a raw metal and to improve the solubility of the raw metal in a plating soln. in electroplating using an insoluble anode by using a large-diameter granular plating metal and crushing the metal immediately before the metal is dissolved in the plating soln. CONSTITUTION:A large-diameter granular plating metal M is supplied into a hopper 1 from an air-conveyor vehicle 10 through a pipeline 11. The metal M is introduced into a crusher 3 by a feeder 2, pulverized and then charged into a dissolution tank 4. A plating sol. with the plating metal ion concn. decreased by plating from a circulating tank 6 is supplied to the dissolution tank 4 by a liq. feed pump 9 and agitated along with pulverized metal, hence the metal is rapidly dissolved in the soln., and a plating soln. having a specified content of plating metal ion is sent to a plating tank from the circulating tank 6 through a pipeline 7. Consequently, dust is not generated from the metal M, and the solubility of the metal in the soln. is improved.

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