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31. 发明专利

JP2003138381A ELECTROLESS COPPER PLATING SOLUTION, METHOD OF CONTROLLING THE SAME, AND ELECTROLESS COPPER PLATING APPARATUS 审中-公开
公开(公告)号：JP2003138381A
公开(公告)日：2003-05-14
申请号：JP2002149491
申请日：2002-05-23
申请人： HITACHI LTD , HITACHI CHEMICAL CO LTD
发明人： MABUCHI KATSUMI , SUZUKI MASAHIRO , ARAI YUKO , AKABOSHI HARUO , MURAKAMI KANJI , MASUYAMA TOKUYUKI , AKAZAWA SATOSHI , TAKANO HISAO
IPC分类号： C23C18/40 , H05K3/18
摘要： PROBLEM TO BE SOLVED: To provide an electroless copper plating solution which can reduce influences on the human body and environment, and can perform stable and uniform plating for a long time by using a copper plating solution with glyoxylic acid as a reducing agent, to provide a method of controlling the solution, and to provide an electroless copper plating apparatus. SOLUTION: (1) In the electroless copper plating solution with glyoxylic acid as a reducing agent, and EDTA (ethylenediaminetetraacetic acid) as a complexing agent, there are added a first additive having a solution stabilizing effect, a second additive having a rate controlling effect and a third additive having an effect of reducing the change of the rate even when the concentration of the second additive changes. The method uses the plating solution, and the electroless copper plating apparatus is provided with a glyoxylic acid replenishing means, a copper ion replenishing means, and pH control agent replenishing means. (2) In the electroless copper plating solution with glyoxylic acid as a reducing agent, and a tartrate as a complexing agent, the molar concentration of glyoxylic acid is controlled to >=8 to the concentration of copper ions, and the concentration of the tartrate is controlled to

32. 发明专利

JP2001076318A THIN FILM MAGNETIC HEAD AND ITS MANUFACTURE 失效
公开(公告)号：JP2001076318A
公开(公告)日：2001-03-23
申请号：JP25259599
申请日：1999-09-07
申请人： HITACHI LTD
发明人： KIKUCHI TOMOKO , FUJII KAZUMI , MABUCHI KATSUMI , KAZAMA SHIGETOSHI
IPC分类号： G11B5/31
摘要： PROBLEM TO BE SOLVED: To reduce corrosive damage of a floating surface in a polishing (grinding) stage and a washing stage at the time of manufacture by forming a magnetic head element part laminated on a corrosion resistant film formed on a substrate by protecting the magnetic head element part. SOLUTION: In the floating surface of a magnetic head 9, the end faces of a lower magnetic film 3 and an upper magnetic film 7 are exposed as the floating surface on a side opposed to a magnetic recording disk of a magnetic recording device. A corrosion resistant film is pre-formed on the metal material surface of the floating surface. A reactive sputtering method is used as a method for forming the corrosion resistant film to optimize film-forming. The corrosion resistant film is formed on a ZrO2 substrate thus drilled into a recessed shape and a magnetic head having a magnetic film consisting of Permalloy(R) is formed in an inner part which is formed by scraping the corrosion resistant film into a recessed shape so as to leave a prescribed thickness from a wall face of the substrate. Corrosion of an element part of the floating surface of the thin film magnetic head can be suppressed by forming the thin film magnetic head after re-forming the corrosion resistant film.

33. 发明专利

JPH11142012A ABSORPTION REFRIGERATING MACHINE AND ABSORBING LIQUID THEREFOR 失效
公开(公告)号：JPH11142012A
公开(公告)日：1999-05-28
申请号：JP30394897
申请日：1997-11-06
申请人： HITACHI LTD
发明人： KIKUCHI TOMOKO , MABUCHI KATSUMI
IPC分类号： F25B15/00 , F25B37/00 , F25B47/00
摘要： PROBLEM TO BE SOLVED: To form an anticorrosion film on a surface of a structural material and prevent a local corrosion by sealing an aqueous solution as an absorbing liquid containing a halogenated lithium as a main component and a specific weight% of an alkali metal hydroxide and an aluminum nitrate. SOLUTION: An absorbing liquid containing a 0.1 to 1.0 wt.% of a lithium hydroxide and a 0.005 to 1.0 wt.% of an aluminum nitrate is formed with respect to a 65 wt.% of a lithium bromide. A film forming liquid is introduced from a valve 17e when the inside of a high temperature regenerator 1a is empty. The valve 17e is closed and then a valve 17b is opened to operate, and heat the high temperature regenerator 1a causing the film forming liquid to circulate. Steam 14 generated during the above operation is converted to water and formed into a refrigerant 11 by a condenser 2. The refrigerant 11 is supplied into the high temperature regenerator 1a by a refrigerant supply piping 18. Film forming concentration in the high temperature regenerator 1a is maintained constant so as to form a two layer corrosion-resistant protective film made up of an aluminum compound and an iron oxide on the inside of the high temperature regenerator 1a and that of a piping.

34. 发明专利

JPH09303907A ABSORPTION FREEZER 失效
公开(公告)号：JPH09303907A
公开(公告)日：1997-11-28
申请号：JP11996596
申请日：1996-05-15
申请人： HITACHI LTD
发明人： KIKUCHI TOMOKO , MABUCHI KATSUMI , MIDORIKAWA HEIHACHIRO
IPC分类号： F25B15/00 , F25B43/04 , F25B49/04
摘要： PROBLEM TO BE SOLVED: To provide a sensing means for measuring each of amount of generated hydrogen gas and an amount of other non-condensing gas (air), sensing a supplementing period of corrosion restricting agent and a leakage of air in the freezer device. SOLUTION: Palladium 3 is fixed in the midway part of a pipe between a gas extracting tank 2a and an absorbing device 1. As the palladium 3 is heated by a heater 4, palladium 3 passes through hydrogen, is accumulated in a gas extracting tank and as a pressure of it is increased up to a specified pressure, a control means 8 opens a solenoid valve, operates an aspirator 6a, discharges hydrogen gas and then an amount of hydrogen gas is converted in reference to a discharging time. An air extracting tank 2b having no palladium mounted therein collects air, discharges it so as to convert its amount. Either an amount of corrosion of composing material or amount of consumption of alkali or corrosion-inhibiter agent is converted in reference to these conversions and then an adding time for alkali or corrosion-inhibiter agent and an alarm of air leakage are informed at a displaying panel 9.

35. 发明专利

JPH06201885A OPERATING CONDITION MONITORING SYSTEM OF PLANT 失效
公开(公告)号：JPH06201885A
公开(公告)日：1994-07-22
申请号：JP16087193
申请日：1993-06-30
申请人： HITACHI LTD
发明人： SAKAI MASANORI , MABUCHI KATSUMI , ARATO TOSHIAKI , TAKAHASHI TAKUYA , IZUMITANI MASAKIYO , MASAOKA ISAO , KOJIMA YOSHIYUKI , INAGAKI MASATOSHI , OSUMI KATSUMI , HAYASHI MAKOTO , SATO FUMIO , SUWA MASATERU , AKAHORI KIMIHIKO , BABA KENJI , YAMAUCHI HIROSHI , ONAKA NORIYUKI
IPC分类号： G01N17/02 , G01N27/26 , G01N27/27 , G01N27/30 , G01N27/403 , G21C17/02 , G21D3/08
摘要： PURPOSE:To precisely extract water quality information of high temperature water indispensable to operation condition monitoring of a nuclear power plant, a thermal power plant and the like by using a specific electrochemical reference electrode (ECP sensor) as a water quality sensor. CONSTITUTION:There is an EPC sensor, viz. a silver/silver halide reference electrode, on which alumina or zirconia 25 and silver halide 23 adhere to both the faces of a silver wire 26 and alumina coating 22, 24 is formed with a cataphoresis method thereon. A sensor part made as above-mentioned is lapped and protected with a guard 21 in which a slender hole is provided in the lower part thereof, an end of the silver wire 26 is electrically connected to a lead wire 31 and an upper part thereof is sealed with a glass 27. In addition, a space between the guard 21 and the lead wire 31 is filled with magnesia and an end part thereof is sealed with another glass 30. The sensor is fixed on a fixed member 29 of an instrumentation pipe of a nuclear reactor and the like and, because high temperature water of a plant is not directly brought into contact with a solid electrolyte (silver halide), its life is very long and reliability of data can be heightened.

36. 发明专利

JPH05312763A 失效
公开(公告)号：JPH05312763A
公开(公告)日：1993-11-22
申请号：JP12169792
申请日：1992-05-14
申请人： HITACHI LTD
发明人： MABUCHI KATSUMI , SAKAI MASANORI , TAKAHASHI TAKUYA , YAMAUCHI HIROSHI , ONAKA NORIYUKI
IPC分类号： G01N27/401 , G01N27/30
摘要： PURPOSE:To improve a long service life and high stability of a sensor which gives the reference potential of a monitoring system in hot water or radiation area by fitting a plate with an optional surface roughness in a liquid junction part of the sensor. CONSTITUTION:A sapphire plate 3 is placed on a sensor body 4 made of sapphire. The contact faces form a liquid junction part from sensor internal liquid thru test solution. The surface roughness of both sapphires determine the diameter of clearance where the liquid flows in the liquid junction part, and when the clearance becomes smaller, an outward flowing of the sensor internal liquid will be suppressed, thereby prolonging a service life of the sensor. However, it must have a sufficient dimension so that the ion may flow. In addition, a tip sleeve 1 is attached on a sensor body 4 at the sensor tip section. The junction of the sleeve 1 and the body 4 adopts metalizing and silver soldering methods according to a Ti metal method.

37. 发明专利

JPH0484799A WATER QUALITY CONTROL METHOD FOR PLANT 失效
公开(公告)号：JPH0484799A
公开(公告)日：1992-03-18
申请号：JP19796490
申请日：1990-07-27
申请人： HITACHI LTD
发明人： SAKAI MASANORI , TAKAHASHI TAKUYA , MABUCHI KATSUMI , YAMAUCHI HIROSHI , ONAKA NORIYUKI
IPC分类号： G21C17/02 , G21D3/08
摘要： PURPOSE:To contrive water quality control by allowing the neural circuit model of a hierarchic structure to learn the typical pattern of an input parameter value of various time points as a teaching signal to input a water quality pattern which is not learned by the neural model so as to operate. CONSTITUTION:An input value is input into an input layer and this signal is output into the neurone element model of an intermediate layer 2. The multiplication and addition of these values and weighting factor are calculated by the use of specified equations on the neurone element model of the intermediate layer 2, and an output value for an output layer 3 is determined according to this compensation. Also the output value of the intermediate layer successively calculates the multiplication and addition of a next intermediate layer and a next output layer to obtain the calculated value of the output layer 3. In order to execute the learning of a neural network, after the output layer 3, a comparator layer 4 and a teacher signal layer 5 are provided further, the signal of the output layer 3 and a teaching signal are input into the comparator layer 4 and the output signal is compared with the teaching signal. The size of the weighting factor is modified so as to lessen the errors. With the use of the modified value, recalculation and the teaching signal are compared with each other to successively repeat modification so as to lessen the errors.

38. 发明专利

JPH02118446A SOLUTION QUANTITATIVE ANALYSIS APPARATUS, QUANTITATIVE ANALYSIS AND WATER QUALITY CONTROL SYSTEM FOR NUCLEAR REACTOR 失效
公开(公告)号：JPH02118446A
公开(公告)日：1990-05-02
申请号：JP11912588
申请日：1988-05-17
申请人： HITACHI LTD
发明人： SAKAI MASANORI , OSUMI KATSUMI , ONAKA NORIYUKI , KIKUCHI EIJI , MABUCHI KATSUMI , TAKAHASHI TAKUYA
IPC分类号： G01N27/48 , G01N27/42 , G21C17/02 , G21C19/307 , G21D3/08
摘要： PURPOSE:To make simultaneously analysis of H2, O2, H2O2 contained in the reactor water of a nuclear reactor in the system by providing an electrolytic cell having a working electrode, counter electrode and reference electrode. CONSTITUTION:The three electrodes 3 to 5 of the electrolytic cell provided with the working electrode 4, the counter electrode 3 and the reference electrode 5 are first brought into contact with a soln. contg. the plural chemical species to be analyzed. Voltage-time waveform signals which are different from each other in the number corresponding to the kinds of the chemical species to be analyzed are then impressed by a potentiostat 15 to the electrolytic cell to electrolyze the soln. The threshold current value or peak current value determined by the kind of voltammetry is determined from the electrolytic current by the electrolysis stage and the potential at which the electrolytic current is obtd. in a current value determining section. The concn. of the plural chemical species to be analyzed is computed in accordance with the threshold current value or the peak current value in a CPU 16. The H2, O2, H2O2 contained in the reactor water of the nuclear reactor are simultaneously measured within the system in this way.

39. 发明专利

JP2002256405A HOT DIP GALVANIZED STEEL SHEET AND PRODUCTION METHOD THEREFOR 失效
公开(公告)号：JP2002256405A
公开(公告)日：2002-09-11
申请号：JP2001061707
申请日：2001-03-06
申请人： HITACHI LTD
发明人： MABUCHI KATSUMI , ARAI YUKO
IPC分类号： C23C22/62 , C23C2/06 , C23C2/26
摘要： PROBLEM TO BE SOLVED: To form a protective film having uniform good appearance and excellent corrosion resistance on the surface of a hot dip galvanized steel sheet as a corrosion-proofing treatment for zinc thereof without using chromium harmful to the environment and human bodies. SOLUTION: The protective film formation can be attained by (1) sticking, spraying or applying a powder which is prepared by mixing a basic compound with a salt having a metal possible to have a multivalent number on the steel sheet passed through a hot dip galvanizing bath before the zinc on the steel sheet completely coagulates when producing a hot dip galvanized steel sheet, or (2) sticking the powder of the basic compound before the complete coagulation of the zinc and then spraying or applying the liquid of salt having the metal possible to have a multivalent number on the steel sheet in such a state that the temperature of the sheet is 350 deg.C or higher.

40. 发明专利

JP2002001415A DESCALING METHOD AND APPARATUS FOR HOT ROLLED STEEL STRIP AND MECHANICAL SCALE BREAKER 失效
公开(公告)号：JP2002001415A
公开(公告)日：2002-01-08
申请号：JP2000185204
申请日：2000-06-20
申请人： HITACHI LTD
发明人： MABUCHI KATSUMI , KIKUCHI TOMOKO , YOKOSUKA SHINICHI , HORII KENJI , NAKAMURA TSUNEO , KAZAMA SHIGETOSHI
IPC分类号： B21B45/06 , C25F1/06 , C25F7/00
摘要： PROBLEM TO BE SOLVED: To provide a descaling method and apparatus for hot rolled steel strip and a mechanical scale breaker which achieve a descaling speed-up combining a mechanical means and an electrolytic means more effectively, improve the surface quality of the steel band, curtail the volume of the pickling solution used for pickling and reduce the operation temperature in the plant. SOLUTION: A descaling method for the hot rolled steel strip by which an electrolytic treatment is performed in the electrolyte solution at 30 to 60 deg.C after removing oxidized scales on the surface of the steel strip by gradually imparting bends on two sides of the hot rolled steel strip alternately by at lest three work rolls having 40 to 70 mm diameter supported respectively by back-up rolls. The descaling apparatus comprises at least three work rolls having 40 to 70 mm diameter placed so as to impart bends alternately on two sides of the steel strip, a mechanical scale breaker provided with the backup rolls to back up each work roll, and an electrolyzer which elecrtrolyzes the steel strip which passes though the scale breaker, immersing the steel strip into the electrolyte solution maintained at 30 to 60 deg.C.

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