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1. 发明专利

JPS6059084A SYSTEM FOR PREVENTING ATMOSPHERIC CORROSION OF STAINLESS STEEL PRODUCT 失效
公开(公告)号：JPS6059084A
公开(公告)日：1985-04-05
申请号：JP16671083
申请日：1983-09-12
申请人： HITACHI LTD , HITACHI SERVICE ENG , HITACHI ENG CO LTD
发明人： KIMURA TAKASHI , SUMIDA NOBUO , SAITOU TAKASHI , ITOU HISAO
IPC分类号： C23F15/00
摘要： PURPOSE:To prevent atmospheric corrosion by controlling the relative humidity of the atmosphere in contact with the surface of a stainless steel product at the limit humidity for generation of the atmospheric corrosion intrinsic to the deposit on said product or below. CONSTITUTION:A temp. and humidity sensor 17 is disposed in an air duct and the temp. and humidity are continuously measured. The measured values are fed to a control panel 18. When the increase of the humidity to the limit humidity for generating atmospheric corrosion or above is detected by the panel 18, a refrigerator 19 is started to cool further the cooling water fed through a cooling water inlet 9 and is fed to a cooling coil 8. The high-humidity air fed from a fan 7 is cooled on the surface of the coil 8 and the steam in the air in this stage is liquefied down to the satd. steam pressure corresponding to the surface temp. of the coil 8 and is discharged as drain through a drain port 20. The atmosphere humidity is thus maintained at the limit humidity for generating corrosion or below.

2. 发明专利

JPS5910372A Method for preventing corrosion of stainless steel material 失效
标题翻译：防止不锈钢材料腐蚀的方法
公开(公告)号：JPS5910372A
公开(公告)日：1984-01-19
申请号：JP11675182
申请日：1982-07-07
申请人： Hitachi Eng Co Ltd , Hitachi Ltd , Hitachi Service Eng Co Ltd
发明人： KIMURA TAKASHI , ITOU HISAO , SUMIDA NOBUO
IPC分类号： B05D7/14 , C23F11/00
摘要： PURPOSE: To prevent thoroughly crevis corrosion under corrosive environment in the stage of coating a strippable paint on a stainless steel material, by applying positive corrosion prevention in the end part of a painted film.
CONSTITUTION: A corrosion preventive agent 2 having self-adhesiveness is beforehand adhered in the coating end part of a stainless steel material 1 prior to coating of a strippable paint thereon, and in succession, the strippable paint is coated thereon so as to overlap on said agent to form a painted film 3. The crevis corrosion in the end part of the film 3 is prevented.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：为了防止在不锈钢材料上涂覆可剥离涂料的腐蚀环境下彻底腐蚀腐蚀，请在涂漆膜的末端进行积极的防腐处理。构成：在其上涂覆可剥离涂料之前，预先将具有自粘性的防腐剂2粘附在不锈钢材料1的涂覆端部中，并且连续地涂覆可剥离涂料，以便在所述以形成涂膜3.防止膜3的端部腐蚀。

3. 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

4. 发明专利

JPS59164984A Dehumidifying method of reactor container 失效
标题翻译：反应器容器的除湿方法
公开(公告)号：JPS59164984A
公开(公告)日：1984-09-18
申请号：JP3892483
申请日：1983-03-11
申请人： Hitachi Ltd , Hitachi Service Eng
发明人： KIMURA TAKASHI , SAITOU TAKASHI , ITOU HISAO , KOBAYASHI MASATO , SATOU TAKEMICHI
IPC分类号： G21C13/00
CPC分类号： Y02E30/40

5. 发明专利

JPS6117993A Method of inhibiting adhesion of radioactive substance to constitutional member of nuclear power plant and nuclear power plant with treater 失效
标题翻译：抑制放射性物质对核电厂和核电厂与处理器的组成部分的粘合的方法
公开(公告)号：JPS6117993A
公开(公告)日：1986-01-25
申请号：JP13721084
申请日：1984-07-04
申请人： Hitachi Ltd
发明人： OOHASHI TAKEYA , FURUYA YASUMASA , HONDA TAKU , KASHIMURA EIJI , MINATO AKIRA , ITOU HISAO
IPC分类号： G21F9/00

6. 发明专利

JPS59136443A Bolt material excellent in stress, corrosion, cracking resistance 失效
标题翻译：螺栓材料在应力，腐蚀，抗裂性方面优秀
公开(公告)号：JPS59136443A
公开(公告)日：1984-08-06
申请号：JP13564283
申请日：1983-07-25
申请人： Hitachi Ltd , Hitachi Metals Ltd
发明人： HATSUTORI SHIGEO , WATANABE RIKIZOU , MORI YASUHIKO , MASAOKA ISAO , SASAKI RIYOUICHI , ITOU HISAO
IPC分类号： C22C19/05
摘要： PURPOSE: To enhance the stress corrosion cracking resistance of a bolt under a high temp. water environment, by preparing the bolt used under a gap and stress acting condition in the high temp. water environment from an Ni-alloy.
CONSTITUTION: The bolt used under a gap and stress acting condition in a high temp. water environment within a boiling water type or pressure water type nuclear reactor is fabricated from an Ni-alloy containing, on a wt. basis, 15W 25% Cr, 1W8% Mo, 0.4W2% Al, 0.7W3% Ti, 0.7W4.5% Nb, less than 40% Fe and more than 40% Ni. In this case, contained Al, Ti and Nb are contained in the range shown by the relation of 3.5%≤2Al+Ti+0.5Nb≤5.5%. This Ni- alloy contains one or more of a γ'-phase and a γ"-phase in the austenite phase base of the structure thereof and suitable for a bolt material showing excellent stress corrosion cracking resistance used in a high temp. water environment.
COPYRIGHT: (C)1984,JPO&Japio
摘要翻译：目的：提高高温下螺栓的抗应力腐蚀开裂性能。水环境，通过准备在高温下在间隙下使用的螺栓和应力作用条件。来自Ni合金的水环境。构成：在高温下在间隙和应力作用条件下使用的螺栓。沸水型或压水型核反应堆内的水环境由Ni合金制成，基础为15-25％Cr，1-8％Mo，0.4-2％Al，0.7-3％Ti，0.7-4.5％Nb，小于40％Fe和超过40％的Ni。在这种情况下，包含的Al，Ti和Nb的含量在3.5％<= 2Al + Ti + 0.5Nb <= 5.5％的关系所示的范围内。该镍合金在其结构的奥氏体相中含有一个或多个γ'相和γ“相，并且适用于在高温下使用的具有优异的应力腐蚀开裂性的螺栓材料。水环境。

7. 发明专利

JPS58217688A Method for removing dye using electrolytic oxidation method 失效
标题翻译：使用电解氧化方法去除染色体的方法
公开(公告)号：JPS58217688A
公开(公告)日：1983-12-17
申请号：JP10064982
申请日：1982-06-14
申请人： Hitachi Eng Co Ltd , Hitachi Ltd
发明人： SUMIDA NOBUO , KATAOKA ICHIROU , ITOU HISAO , SAITOU TAKASHI , FURUYA YASUMASA
IPC分类号： C25F3/00 , C25D1/04
摘要： PURPOSE: To oxidatively dissolving oxide and to regenerate a liquid, by a method wherein a liquid contacted with the oxide on the surface of a metal is subjected to electrolytic oxidation on an anode and the redox potential of the liquid is moved to a noble direction from a Fermi level.
CONSTITUTION: An object to be washed having oxide on the surface of the matrix metal thereof, for example, a stainless steel pipe is immersed in the liquid containing, for example, an oxidizing agent in an electrolytic tank. The oxidizing agent is one having redox level at a more noble position, for example, a solution containing Mn
2+ , Cr
3+ , Ag
+ , Cl
- , I
- and Br
- , when electrolytic oxidation is carried out in this state, the redox level of the liquid is moved to a direction more noble than the Fermi level of the oxide and the potential in the oxide is moved to the solution side to dissolve the oxide.
COPYRIGHT: (C)1983,JPO&Japio
摘要翻译：目的：为了将氧化物氧化并再生液体，通过与金属表面的氧化物接触的液体在阳极上进行电解氧化并使液体的氧化还原电位从高温方向向费米等级。构成：将其基体金属表面上具有氧化物的被洗涤物体，例如不锈钢管浸入包含例如电解槽中的氧化剂的液体中。氧化剂是在更高贵位置具有氧化还原电位的氧化剂，例如含有Mn 2+，Cr 3+，Ag +，Cl - ，I - 和Br - >，当在该状态下进行电解氧化时，液体的氧化还原电位移动到比氧化物的费米能级更高的方向，并且将氧化物中的电位移动到溶液侧以溶解氧化物。

8. 发明专利

JPS58132386A GROOVE SHAPE FOR WELD ZONE OF PIPE 失效
公开(公告)号：JPS58132386A
公开(公告)日：1983-08-06
申请号：JP1154682
申请日：1982-01-29
申请人： HITACHI LTD
发明人： SHIMIZU TASUKU , ENOMOTO KUNIO , ITOU HISAO , SATOU HIROFUMI
IPC分类号： B23K33/00
摘要： PURPOSE:To prevent remaining of blowholes generated in the stage of welding, and to elevate corrosion resistance of the inside surface of a pipe, by setting the length of a working part on the inside surface of the groove part of the pipe, to a specified value, when welding a horizontal pipe by means of water-cooling. CONSTITUTION:When welding a horizontal pipe by making water flow into the inside and cooling it, length L' of an inside surface clad-working part (DC working part) is set to L'>=1.8t1+70mm. (t1 denotes thickness of a Dc working part 3, in case of =2.3t1+60mm. in case when t1 is >=20mm.. Or in addition to a regular DC working part 3, a wide groove part 7 whose inside diameter is a little large is provided. Blowholes 6 generated in the stage of welding are all separated from the center of welding and remain, therefore, it is prevented that a weld is not cooled sufficiently due to existence of blowholes, and a drop of corrosion resistance due to insufficient cooling is prevented.

9. 发明专利

JPS5851977A REGENERATION OF CHEMICAL DECONTAMINATING LIQUID 失效
公开(公告)号：JPS5851977A
公开(公告)日：1983-03-26
申请号：JP15062781
申请日：1981-09-25
申请人： HITACHI LTD , HITACHI ENG CO LTD
发明人： FURUYA YASUMASA , HIRA YASUO , HASEGAWA TAKASHI , MINATO AKIRA , SUMIDA NOBUO , ITOU HISAO
IPC分类号： C02F1/461 , C23G1/36 , G21F9/06
摘要： PURPOSE:To remove metallic ions from chelating agent-contg. chemical decontaminating liquid, by introducing the metal oxide-contg. decontaminating liquid obtained from a decontaminating process into an electrolytic cell provided with a cathode and an anode, and applying DC between the two electrodes. CONSTITUTION:Deteriorated chemical decontaminating liquid obtained from a decontaminating process 1 is introduced into an electrolytic cell 9 provided with a cathode 4 and an anode 5, and DC is applied between the cathode 4 and the anode 5 by a DC power source 7. The chemical decontaminating liquid is regenerated by depositing metallic ions contained in it as metals on the cathode 4, withdrawn from the cathodic chamber 2 by a pump 8 and circulated for reuse in the decontaminating process. The quantity of electricity to be applied between the two electrodes in the electrolytic cell 9 is easily determined by obtaining the proper potential of the cathode from the kinds, concentrations, etc. of the metallic ions to be deposited and a chemical agent as the chemical decontaminating liquid by experimentation or calculation.

10. 发明专利

JPS57175292A CORE COOLING SPRAY DEVICE OF DISPLACEMENT PROTECTION TYPE REACTOR 失效
公开(公告)号：JPS57175292A
公开(公告)日：1982-10-28
申请号：JP5980681
申请日：1981-04-22
申请人： HITACHI LTD
发明人： SAKAI TAKAO , ITOU HISAO , HASHIMOTO KIKUHIRO
IPC分类号： G21C15/18 , G21C15/06 , G21C19/28

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