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1. 发明专利

JPH11232812A MAGNETIC DISK STORAGE DEVICE 失效
公开(公告)号：JPH11232812A
公开(公告)日：1999-08-27
申请号：JP2808398
申请日：1998-02-10
申请人： HITACHI LTD
发明人： SUZUKI KATSUMI
IPC分类号： G11B21/21 , G11B5/02 , G11B20/18
摘要： PROBLEM TO BE SOLVED: To control the height of the head, which is floated, by obtaining a floating force through air bearing between a head slider and a rotary magnetic disk and varying the air flow on a rotating magnetic disk. SOLUTION: If a thermal asperity detecting circuit 8 detects a thermal asperity while data is read, an error generating cylinder is instructed to follow a read head and a microprocessor 10 detects the position of error bits and the number of error bits in reproduced data caused by thermal asperity. Then, the radial position of a floating height control arm is varied to conduct a similar detection. If the number of error bits in the reproduced signals is increased by the change in the radial position of the floating height control head, the floating height control is stopped and the radial position of the head is returned to the position where the head was placed before the generation of the thermal asperity. The radial position of the head is continuously changed until a correct demodulation of the data is made possible.

2. 发明专利

JPH0331792B2 失效
公开(公告)号：JPH0331792B2
公开(公告)日：1991-05-08
申请号：JP13534483
申请日：1983-07-25
申请人： HITACHI LTD
发明人： SUZUKI KATSUMI , ITO KAZUTOSHI , SUZUKI MAMORU , MINATO AKIRA , OOTANI ISAO
IPC分类号： C23F11/00 , C23F13/00 , C23F15/00

3. 发明专利

JPH0221312B2 失效
公开(公告)号：JPH0221312B2
公开(公告)日：1990-05-14
申请号：JP21248984
申请日：1984-10-12
申请人： HITACHI LTD
发明人： SUZUKI KATSUMI , SUZUKI MAMORU , MINATO AKIRA , KANBAYASHI TAKESHI
IPC分类号： C02F1/42 , C02F1/58

4. 发明专利

JPS61140703A Feedwater heater for nuclear power plant 失效
标题翻译：用于核电厂的进水加热器
公开(公告)号：JPS61140703A
公开(公告)日：1986-06-27
申请号：JP26075484
申请日：1984-12-12
申请人： Hitachi Ltd
发明人： IZUMITANI MASAKIYO , KAWAKAMI TOSHIO , SUZUKI KATSUMI , MINATO AKIRA , OSUMI KATSUMI
IPC分类号： F22D1/32 , G21D1/00
CPC分类号： Y02E30/40

5. 发明专利

JPS6190788A Water treatment in power plant and its apparatus 失效
标题翻译：电厂水处理及其设备
公开(公告)号：JPS6190788A
公开(公告)日：1986-05-08
申请号：JP21248984
申请日：1984-10-12
申请人： Hitachi Ltd
发明人： SUZUKI KATSUMI , SUZUKI MAMORU , MINATO AKIRA , KANBAYASHI TAKESHI
IPC分类号： C02F1/42 , C02F1/58
摘要： PURPOSE: To prevent the corrosion of machines, apparatus, and piping and the cracking of a turbine rotor disk by constituting a condenser and a low- pressure feed-water heater of a material without contg. copper, using an ammonia-type ion-exchange resin in a condensing and desalting apparatus, and regulating the pH of the system water to a specified value.
CONSTITUTION: A condenser 2 and a low-pressure feed-water heater 8 are consti tuted of a material without contg. copper (e.g., titanium and stainless steel), an ammonia-type ion-exchange resin (NH
4 -OH type) is used in a condensing and desalting apparatus 6, and the content of an Na-type ion-exchange resin (R-Na) is regulated to ≥0.1%. In the power plant, an alkaline agent (e.g., ammo nia and hydrazine) is added into the system water to regulate the pH to 9.6W10.0. Consequently, the corrosion of machines, apparatus, and piping in the power plant system and the cracking of a turbine rotor disk can be prevented.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：通过构成冷凝器和材料的低压给水加热器来防止机器，设备和管道的腐蚀，以及涡轮转子盘的破裂。铜，在冷凝和脱盐装置中使用氨型离子交换树脂，并将系统水的pH调节至规定值。构成：冷凝器2和低压给水加热器8构成材料，而不受限制。铜（例如钛和不锈钢），氨型离子交换树脂（NH4-OH型）用于冷凝脱盐装置6中，Na型离子交换树脂（R-Na ）调节至> = 0.1％。在发电厂中，向系统水中加入碱性试剂（如氨水和肼）以将pH调节至9.6-10.0。因此，可以防止发电厂系统中的机器，设备和管道的腐蚀以及涡轮转子盘的破裂。

6. 发明专利

JPS60200972A CORROSION PREVENTION OF ZIRCONIUM OR ZIRCONIUM ALLOY 失效
公开(公告)号：JPS60200972A
公开(公告)日：1985-10-11
申请号：JP5571384
申请日：1984-03-23
申请人： HITACHI LTD
发明人： SASAKI YUUKO , SUZUKI KATSUMI , MINATO AKIRA , YOSHIDA TOMIO
IPC分类号： C23C22/54 , C23C22/58
摘要： PURPOSE:To obtain Zr or Zr alloy having satisfactory corrosion resistance by subjecting the Zr or Zr alloy to a surface treatment using an oxidizing acid contg. oxidizing metallic ion thereby forming easily a protective film on the surface. CONSTITUTION:Zr or Zr alloy is subjected to a surface treatment by an oxidizing acid contg. >=1 kinds of oxidizing metallic ions such as Ru ion, Rh ion, Pd ion, etc. Mixed acids composed of 1 or >=2 kinds among HNO3, H2O2, HClO, etc. are used as the above-mentioned acid. The preferable treating conditions are: The concn. of nitric acid is 14mol/l (65%) which is approximately the azerotropic concn., the concn. of the Ru ion is 1X10 mol/l and the treating temp. is the boiling temp. (120 deg.C). The uniform protective film is easily formed on the surface of the Zr or Zr alloy by such surface treatment by which the corrosion resistance is considerably improved.

7. 发明专利

JPS60190583A Method for preventing corrosion of system for concentrating liquid radioactive waste 失效
标题翻译：防止液体放射性废物浓缩系统腐蚀的方法
公开(公告)号：JPS60190583A
公开(公告)日：1985-09-28
申请号：JP4395584
申请日：1984-03-09
申请人： Hitachi Ltd
发明人： ITOU KAZUTOSHI , SUZUKI KATSUMI , SUZUKI MAMORU , MINATO AKIRA , ADACHI TAKUYA
IPC分类号： C23F11/12 , C23F11/10 , C23F11/167 , C23F13/00
CPC分类号： C23F11/10
摘要： PURPOSE:To produce a significant corrosion preventing effect even at the rear side of a member, a gapped part and a part contacting with a flow by combining corrosion inhibiting method using an org. compound having a carboxyl group, etc. and showing its effect under flowing conditions with an electrolytic protection method showing its effect in static water. CONSTITUTION:A corrosion inhibitor consisting of an org. compound having a carboxyl group and phosphonic acid or water soluble salts of them is prepd. The corrosion inhibitor showing its effect under flowing conditions is added to liquid radioactive waste with high electric conductivity and high corrosiveness discharged from a nuclear power plant, and an electrolytic protection method showing its effect in static water is applied at the same time.
摘要翻译：目的：通过组合使用腐蚀抑制方法，即使在构件的后侧，间隙部分和与流动接触的部分也产生显着的防腐蚀效果。具有羧基的化合物等，并且在流动条件下显示其在静电水中显示其作用的电解保护方法的效果。构成：腐蚀抑制剂由组织制备具有羧基和膦酸的化合物或它们的水溶性盐。在流动条件下显示其效果的腐蚀抑制剂被添加到从核电厂排出的高导电性和高腐蚀性的液体放射性废物中，并且同时施加显示其在静态水中的效果的电解保护方法。

8. 发明专利

JPS60125383A STORAGE TANK FOR LIQUID 失效
公开(公告)号：JPS60125383A
公开(公告)日：1985-07-04
申请号：JP23139783
申请日：1983-12-09
申请人： HITACHI LTD
发明人： ITOU KAZUTOSHI , SUZUKI KATSUMI , SUZUKI MAMORU , MINATO AKIRA , OOTANI ISAO
IPC分类号： C23F15/00
摘要： PURPOSE:To provide a storage tank for liquid which is provided with an adequate corrosion preventive measure to permit prevention of corrosion by the constitution in which the conduction of electricity in a circuit including the metal of the storage tank for liquid made of a metal having a lining and a specifically provided electrode plate is detected and the non-defectiveness of the lining layer is detected. CONSTITUTION:A circuit is formed through a resin lining layer 2 of a storage tank 1 for liquid made of a carbon steel provided with said lining layer 2 by connecting the above-mentioned carbon steel 1 and a specific electrode plate 3 provided in the liquid by a metallic conductor circuit 4. A measuring device 5 for electrical conductivity is connected to said circuit to measure the electrical conductivity. The measured value is compared with a set current value which is a reference when the layer 2 is normal in a comparator circuit 6. A device 7 for adding an inhibitor is controlled by the output signal corresponding to the resultant deviation value to feed the inhibitor into the liquid through a feed pipe 8. The corrosion of the carbon steel part 1 is thus economically prevented when a pinhole, failure, etc. arise in the lining 2.

9. 发明专利

JPS6026677A CONTROL SYSTEM FOR MONITORING ETCHING AND CORROSION PREVENSION 失效
公开(公告)号：JPS6026677A
公开(公告)日：1985-02-09
申请号：JP13534483
申请日：1983-07-25
申请人： HITACHI LTD
发明人： SUZUKI KATSUMI , ITOU KAZUTOSHI , SUZUKI MAMORU , MINATO AKIRA , OOTANI ISAO
IPC分类号： C23F11/00 , C23F13/00 , C23F15/00
摘要： PURPOSE:To develop a control system for monitoring the corrosion prevention of a metallic material by measuring continuously the corroding rate of the metallic material under corrosive environment and the environmental factor for corrosion and controlling the environmental factor for corrosion in accordance with the correlation thereof. CONSTITUTION:The reference value of an etching rate of a metallic material 2 in a corrosion medium 1 is preliminarily stored in an arithmetic device 6. An environmental factor is measured by a device 5 for measuring the environmental factor from the detection signal emitted by an element 3 for measuring the environmental factor. The correlation between the environmental factor value measured by the device 5 and the corroding rate measured by a device 4 for measuring the corroding rate is calculated by an arithmetic device 6 from both values and the relation therebetween is monitored. An operating part for the environmental factor is further controlled to return the changed environmental factor to the original factor by feeding back the measured value of the environmental factor changed conisiderably from a stationary value in the correlation with the corrding rate to an environment control device 7, thereby maintaining the effect of preventing corrosion of the material 2 under the corrosive environment.

10. 发明专利

JPS59224598A ELECTROLYTIC REGENERATING METHOD OF USED ION-EXCHANGE RESIN 失效
公开(公告)号：JPS59224598A
公开(公告)日：1984-12-17
申请号：JP9913783
申请日：1983-06-03
申请人： HITACHI LTD , HITACHI ENG CO LTD , HITACHI SERVICE ENG
发明人： SUMIDA NOBUO , ITOU HISAO , SAITOU TAKASHI , USHIDA YOSHIYUKI , KIMURA TAKASHI , SAWA TOSHIO , SUZUKI KATSUMI , KATAOKA ICHIROU , OOSUMI KATSUMI
IPC分类号： B01J49/00 , G21F9/00 , G21F9/12 , G21F9/30

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