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41. 发明专利

JPS6160875A Manufacture of material for turbine 失效
标题翻译：涡轮机材料的制造
公开(公告)号：JPS6160875A
公开(公告)日：1986-03-28
申请号：JP18058084
申请日：1984-08-31
申请人： Hitachi Ltd
发明人： SUZUKI MAMORU , SUZUKI KATSUMI , ITO KAZUTOSHI , MINATO AKIRA , IIJIMA KATSUMI , KANBAYASHI TAKESHI
IPC分类号： C23C8/26
CPC分类号： C23C8/26
摘要： PURPOSE:To manufacture a material for a turbine inhibiting the formation of scale by oxidation with steam and having superior erosion resistance by nitriding an austenitic stainless steel as a material for a turbine in the atmosphere of gaseous nitrogen. CONSTITUTION:The austenitic stainless steel consisting of 13.5-16.0% Cr, 25.0-27.0% Ni, 1.00-1.50% Mo, 0.20-0.40% V, 0.15-0.35% Al, 1.6-1.9% Ti, 0.3-0.4% Si, 1.00-1.40% Mn and the balance Fe with inevitable impurities as a material for the rotor and blades of a turbine is nitrided at
摘要翻译：目的：制造用于通过用蒸汽氧化抑制氧化皮垢形成的涡轮的材料，并且通过氮化作为气态氮气氛中的涡轮机的材料的奥氏体不锈钢而具有优异的耐冲蚀性。构成：奥氏体不锈钢由13.5-16.0％的Cr，25.0-27.0％的Ni，1.00-1.50％的Mo，0.20-0.40％的V，0.15-0.35％的Al，1.6-1.9％的Ti，0.3-0.4％的Si， 1.00-1.40％Mn，余量为Fe和不可避免的杂质作为涡轮转子和叶片的材料在氮气氛中在<= 1,100℃氮化，得到用于热电厂的涡轮机材料其临界压力非常高。所得材料通过蒸汽氧化而抑制氧化皮的形成，并具有改善的耐腐蚀性和延长的使用寿命。

42. 发明专利

JPS6134194A Galvanized and zinc alloy electroplated steel sheet and its manufacture 失效
标题翻译：镀锌和锌合金电镀钢板及其制造
公开(公告)号：JPS6134194A
公开(公告)日：1986-02-18
申请号：JP15635184
申请日：1984-07-26
申请人： Hitachi Ltd
发明人： ITO MASAHIKO , MIDORIKAWA HEIHACHIRO , MINATO AKIRA
IPC分类号： C25D5/26 , C25D5/10
摘要： PURPOSE: To obtain a galvanized and Zn alloy electroplated steel sheet having high corrosion resistance and smoothness by galvanizing the surface of a steel sheet in a galvanizing bath to form a Zn layer, adding Mo and Ni to the bath, and forming a Zn-Mo-Ni alloy layer on the Zn layer by plating in the resulting bath.
CONSTITUTION: The surface of a steel sheet is cleaned and immersed in a conventional acidic galvanizing bath to form the 1st Zn layer of about 0.01W0.1μm thickness, To the galvanizing bath are added a water soluble Mo compound by 6×10
-3 W12g/l (expressed in terms of Mo) and a water soluble Ni compound by 0.3W44g/l (expressed in terms of Ni), and the bath is adjusted to 2.0W6.0pH. The 2nd Zn-Mo-Ni alloy layer is formed on the 1st Zn layer by plating in the resulting 2nd plating bath. The preferred composition of the 2nd layer is composed of 0.05W50wt% Mo, 0.1W12wt% Ni and the balance Zn.
COPYRIGHT: (C)1986,JPO&Japio
摘要翻译：目的：通过在镀锌浴中镀锌钢板表面形成Zn层，获得具有高耐腐蚀性和光滑度的镀锌和锌合金电镀钢板，将Mo和Ni加入浴中，形成Zn-Mo -Ni合金层通过在所得浴中电镀在Zn层上。构成：将钢板的表面清洗浸渍在常规的酸性镀锌浴中，形成约0.01-0.1μm厚的第一Zn层。向镀锌浴中加入6×10 -3〜 12g / l（以Mo表示）和水溶性Ni化合物0.3-44g / l（用Ni表示），将浴调节至2.0-6.0pH。通过在所得的第二镀液中电镀，在第一Zn层上形成第二Zn-Mo-Ni合金层。第二层的优选组成由0.05-50wt％的Mo，0.1-12wt％的Ni和余量的Zn组成。

43. 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

44. 发明专利

JPS60148624A SCALE BREAKING METHOD OF HOT ROLLING STEEL STRIP 失效
公开(公告)号：JPS60148624A
公开(公告)日：1985-08-05
申请号：JP197584
申请日：1984-01-11
申请人： HITACHI LTD
发明人： MIDORIKAWA HEIHACHIROU , ITOU MASAHIKO , KAZAMA SHIGETOSHI , MINATO AKIRA , KIMURA TOMOAKI
IPC分类号： B21B45/06
摘要： PURPOSE:To obtain a steel plate on which no scale particle sinks into a steel plate foundation by breaking down mechanically a scale by giving a deformation to a steel band, and simultaneously, removing the peeled scale. CONSTITUTION:A steel strip 1 to which a scale is adhering is brought to a bending by plural bending rolls 2, a crack is generated in the scale, and simultaneously, a part of the scale is peeled off. Subsequently, as for the steel strip 1, the peeled scale accumulated on the steel strip surface is removed by a scale removing wire brush roll 3. The removed scale drops down to a scale accumulating tank 4 of the lower part, and is accumulated. In this way, the steel strip 1 passes the bending roll 2 and the scale removing wire brush roll 3 alternately plural times and is brought to scale breaking. Subsequently, it goes into a pickling tank 5, and after melting the scale, an acid remaining on the surface is washed down in a rinsing tank 6, and the steel strip passes through a dryer and it is dried and coiled by a coiling machine 8.

45. 发明专利

JPS6032160B2 失效
公开(公告)号：JPS6032160B2
公开(公告)日：1985-07-26
申请号：JP3613780
申请日：1980-03-24
申请人： HITACHI LTD
发明人： ITO KAZUTOSHI , SUZUKI KATSUMI , SUZUKI MAMORU , MINATO AKIRA
IPC分类号： G21F9/08 , C23F11/00 , C23F11/08 , G21F9/00

46. 发明专利

JPS60116760A METHOD FOR PREVENTING STRESS-CORROSION CRACKING OF METALLIC MATERIAL 失效
公开(公告)号：JPS60116760A
公开(公告)日：1985-06-24
申请号：JP22421783
申请日：1983-11-30
申请人： HITACHI LTD
发明人： KIKUCHI EIJI , OONAKA NORIYUKI , MINATO AKIRA
IPC分类号： C23C8/12 , G21C13/02
摘要： PURPOSE:To prevent efficiently stress-corrosion cracking of a pressure vessel and a primary pipeline by regulating the concn. of ozone in the pressure vessel or the primary pipeline of an atomic reactor within a specified range. CONSTITUTION:The concn. of ozone in a pressure vessel and a primary pipeline of a BWR atomic reactor or in a primary pipeline of an ATR-type atomic reactor is regulated in the range of 1ppb-100ppm. Ozone is easily decomposed and converted into dissolved oxygen under conditions where high-temp. reactor water exists. In the pressure vessel or the primary pipeline of the atomic reactor, however, the dissolved O2 formed by the thermal decomposition of ozone is immediately boiled off into the outside of the system, and the dissolved O2 concn. in the reactor water may not be increased. Accordingly, ozone is injected into said pressure vessel and primary pipeline. Since the ozone exists stably under the irradiation of rays in this way, the ozone is not decomposed by radiation or radiated. And the generation of stress-corrosion cracking in the atomic reactor plant can be inhibited.

47. 发明专利

JPS60106921A SOLUTION HEAT TREATMENT OF AUSTENITIC STAINLESS STEEL 失效
公开(公告)号：JPS60106921A
公开(公告)日：1985-06-12
申请号：JP14253684
申请日：1984-07-09
申请人： HITACHI LTD
发明人： SASADA YASUHIRO , MINATO AKIRA
IPC分类号： C21D9/50
摘要： PURPOSE:To enable a soln. heat treatment of only the required part and to prevent generation of a crack in the weld sensitized region of a welded austenitic stainless steel by heating and cooling quickly and locally said region. CONSTITUTION:When austenitic stainless steel plates 1 are welded by a weld metal 3 in the position where the plate thickness is reduced by surface 2 prepared to adjust the wall thickness, a sensitized region 5 is formed on the outside of a weld boundary 4 and if such steel plate is used as it is, a crack arises therein and therefore the steel plate is subjected to a soln. heat treatment. Electricity is conducted to a heating coil 7 provided to the outside circumferential part including said region 5 to heat locally the thin walled part including the region 5 up to the solutionizing temp. in the case of welding stainless steel pipes 6. The pipes are held for a time shorter than the time when the region 5 is exposed to the sensitizing temp. in the stage of welding and thereafter the inside and outside surfaces of the pipes 6 are quickly cooled by the cooling water from respective cooling nozzles 12, 13 by which the steel pipes are subjected locally to the soln. heat treatment.

48. 发明专利

JPS60103172A METHOD FOR PREVENTING STRESS CORROSION CRACKING IN POWER PLANT 失效
公开(公告)号：JPS60103172A
公开(公告)日：1985-06-07
申请号：JP20897583
申请日：1983-11-09
申请人： HITACHI LTD
发明人： KIKUCHI EIJI , OONAKA NORIYUKI , MINATO AKIRA , SAITOU TAKASHI
IPC分类号： C23C8/16 , C23C8/18
摘要： PURPOSE:To improve the resistance of piping and vessels to stress corrosion cracking by bringing nascent oxygen into contact with the faces of primary piping and a boiler contacting with water to form oxide films. CONSTITUTION:When austenitic stainless steel or the like is used as the material of primary piping, a boiler, etc. for a nuclear power plant, nascent oxygen is brought into contact with at least the face of the steel contacting with water at >=100 deg.C. An oxide film is formed on the surface of the steel, so stress corrosion cracking in the plate is prevented. Hydrogen peroxide or the like is used as a source for the nascent oxygen. The ratio between the concn. X of hydrogen peroxide and the concn. Y of dissolved oxygen is adjusted so as to satisfy an inequality logX(ppm)>=1.047logY+0.43 (Y>=0.2ppm) or an equality logX(ppm) >=0.171logY-0.18 (Y

49. 发明专利

JPS60100688A WATER TREATMENT OF ULTRA-SUPER CRITICAL THERMAL POWER PLANT 失效
公开(公告)号：JPS60100688A
公开(公告)日：1985-06-04
申请号：JP20737383
申请日：1983-11-07
申请人： HITACHI LTD , BABCOCK HITACHI KK
发明人： SUZUKI MAMORU , SUZUKI KATSUMI , ITOU KAZUTOSHI , MINATO AKIRA , KANBAYASHI TAKESHI , ONO SHIGETOSHI
IPC分类号： C23F14/02 , C23F11/08 , F28F19/00
摘要： PURPOSE:To decrease the amt. of Fe in feed water and to prevent sticking of corrosion product to a feed water system by measuring water quality in the inlet of a high-pressure feed water heater of an ultra-super critical thermal power plant, feeding a liquid chemical into the feed water system and adjusting the pH of the feed water. CONSTITUTION:The amt. of Fe and pH of feed water are measured in the inlet of a high-pressure feed water heater 13A of an ultracritical thermal power plant which feeds the condensate from a condenser 2 of a turbine 1 through a condensate desalting device 6 and low-pressure feed water heaters 8A-C to a deaerator 9, supplies the feed water from a water storage tank 10 thereof by a boiler feed water pump 12 through high-pressure feed water feeders 13A-C and a fuel economizer 14 to a boiler 15 and introduces the generated steam into said turbine 1. A chemical such as aqueous ammonia, hydrazine or the like is fed into the feed water from either or both of chemical feeders 21B, 21A in the inlet of the heater 13A or the inlet of the heater 8A according to the measured values to adjust the pH of the feed water to 9.5-9.8. Sticking of the corrosion product to the apparatus, piping, etc. of the feed water system is thus prevented and the efficiency of the plant is improved.

50. 发明专利

JPS602695A POWER PLANT 失效
公开(公告)号：JPS602695A
公开(公告)日：1985-01-08
申请号：JP10774083
申请日：1983-06-17
申请人： HITACHI LTD
发明人： KOBAYASHI SHIROU , MINATO AKIRA
IPC分类号： F22B37/04 , C25D11/34 , F01K21/00 , G21C13/08
摘要： PURPOSE:To prevent formation and dislodging of scale in the piping of a power plant and to improve power generating efficiency and working efficiency by using an anodizd carbon steel, low alloy steel and stainless steel for the apparatus and piping in the wetting parts of a power plant. CONSTITUTION:An anodized carbon steel, low alloy steel and stainless steel are used for the apparatus and piping in wetting parts such as condenser piping, feed water piping, recirculating system piping, primary cooling water piping, etc. in a plant such as thermal power plant and nuclear power plant, etc. the anodization is accomplished by maintaining the potential of an anode at about 1-1.5V in an electrolyte bath kept at about 0-300 deg.C and about 4-13pH. An aq. mixed soln. composed of boric acid and borax or the like is used as an example of the electrolyte. Since the steel subjected to the anodization decreases the rate of forming and dislodging scale, the power generating efficiency and working efficiency of the plant are improved.

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