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71. 发明专利

JP2004156444A Thermal barrier coating degradation diagnosing method 审中-公开
标题翻译：热障涂层降解诊断方法
公开(公告)号：JP2004156444A
公开(公告)日：2004-06-03
申请号：JP2002319789
申请日：2002-11-01
申请人： Mitsubishi Heavy Ind Ltd , 三菱重工業株式会社
发明人： OHARA MINORU , TAKAHASHI KOJI , KAWAI HISATAKA
IPC分类号： F01D5/28 , F01D25/00 , F02C7/00
摘要： PROBLEM TO BE SOLVED: To rapidly perform re-coating or the like by correctly diagnosing degradation of thermal barrier coating executed on a high-temperature member for a gas turbine such as a gas turbine blade, and discovering damages such as peeling and wear of the coating.
SOLUTION: Internal peeling of the thermal barrier coating is firstly inspected by the infrared ray thermography method. If a peeling pattern portion is detected as a result, a surface element analysis inspection by the fluorescent X-ray method and the film thickness measurement inspection by the eddy current flaw detection method are carried out on the peeling pattern portion. Presence/absence of peeling/wear of the thermal barrier coating is detected from the result of inspection, and degradation diagnosis is determined. If no peeling pattern portion is detected as a result of the internal peeling inspection by the infrared ray thermography method, the surface element analysis inspection by the fluorescent X-ray method is eliminated, and the film thickness measurement inspection by the eddy current flaw detection method is carried out for confirmation.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：通过正确地诊断在诸如燃气轮机叶片的燃气轮机的高温部件上执行的热障涂层的劣化来快速地进行再涂覆等，并且发现诸如剥离和磨损的涂层。
解决方案：首先通过红外线热成像方法检查热障涂层的内部剥离。如果检测到剥离图案部分，则在剥离图案部分上进行通过荧光X射线法的表面元素分析检查和通过涡流探伤方法的膜厚测量检查。从检查结果中检测出有无剥离/磨损的障碍涂层，确定劣化诊断。作为通过红外线热成像法的内部剥离检查的结果，没有检测到剥离图案部分，消除了通过荧光X射线法的表面元素分析检查，并且通过涡流探伤方法进行膜厚测量检查进行确认。版权所有（C）2004，JPO

72. 发明专利

JP2000017458A MATERIAL FOR HOT PARTS AND ITS PRODUCTION 失效
公开(公告)号：JP2000017458A
公开(公告)日：2000-01-18
申请号：JP18192298
申请日：1998-06-29
申请人： MITSUBISHI HEAVY IND LTD
发明人： KAWAI HISATAKA , TAKAHASHI KOJI , NISHIURA YUKIKO , MORIYA KEIICHI
IPC分类号： C23C4/06 , C21D1/74 , C23C4/10 , C23C4/18 , C23C28/00 , C23C30/00
摘要： PROBLEM TO BE SOLVED: To provide the material for hot parts, which has the ability to maintain the durability even when it is used under a high temp. circumstance for a long period of time, and the method for producing the same. SOLUTION: The material for hot parts is produced by first providing a binding layer 12 of the formula MCrAlY on the surface of a metal substrate 11, then heat-treating the resulting layer at a temp. of >=900 deg.C under vacuum to form α-alumina layer 13 on the surface of the binding layer 12 and subsequently providing a heat barrier layer 14 comprising oxide ceramics on the surface of the α-alumina layer 13.

73. 发明专利

JPH11343564A HIGH TEMPERATURE EQUIPMENT 失效
公开(公告)号：JPH11343564A
公开(公告)日：1999-12-14
申请号：JP16278198
申请日：1998-05-28
申请人： MITSUBISHI HEAVY IND LTD
发明人： TORIGOE TAIJI , KAWAI HISATAKA , NISHIURA YUKIKO , TAKAHASHI KOJI , ABE KATSUHIKO
IPC分类号： C23C4/06 , C23C4/10 , C23C4/18 , F01D5/28 , F01D25/00 , F02C7/30
摘要： PROBLEM TO BE SOLVED: To obtain a gas turbine part usable in a high temp. corrosion environment de to a corrosive content and a wear environment due to a flying particle by forming a coating layer in which Cr3 C2 is finely dispersed in Co, Cr, Al, Y, etc. SOLUTION: A MCrAlY (M; Co, Ni, Co+Ni, Fe)+Cr3 C2 coating layer 2, which has corrosion, oxidation and wear resistances, is formed on a base material. A mixing ratio of MCrAlY and Cr3 C2 is (50-75) to (50-25) by weight, that is, MCrAlY/Cr3 C2 =1/1 to 3/1. For forming the MCrAlY+Cr3 C2 coating layer 2 various thermal spraying methods of, the same as the case of the conventional MCrAlY, low pressure plasma(LPPS), atmospheric pressure plasma spraying(APS), high speed flame spraying(HVOF), etc., can be used. As for spray coating powder the one can be used, in which the Cr3 C2 powder is sufficiently mixed with the MCrAlY powder with a ball mill and then is classified to have a particle size distribution suitable for various spray coating works.

74. 发明专利

JPH11131190A HIGH STRENGTH HEAT RESISTANT STEEL FOR HIGH-AND LOW-PRESSURE INTEGRATED TYPE ROTOR, AND TURBINE ROTOR 失效
公开(公告)号：JPH11131190A
公开(公告)日：1999-05-18
申请号：JP29232697
申请日：1997-10-24
申请人： MITSUBISHI HEAVY IND LTD
发明人： KADOYA YOSHIKUNI , UMAGOE RYUTARO , KAWAI HISATAKA
IPC分类号： F01D5/28 , C22C38/00 , C22C38/48 , F01D25/00
摘要： PROBLEM TO BE SOLVED: To obtain a high strength heat resistant steel for high- and low- pressure integrated type rotor, combining excellent high temp. creep strength with excellent toughness, by specifying a composition consisting of C, Ni, Cr, Mo, V, N, Nb, and Fe and controlling respective amounts of Si, Mn, P, and S among inevitable impurities. SOLUTION: The high strength heat resistant steel can be obtained by providing a composition which consists of, by weight, 0.05-0.2% C,

75. 发明专利

JPH10251809A HIGH TOUGHNESS FERRITIC HEAT RESISTANT STEEL 失效
公开(公告)号：JPH10251809A
公开(公告)日：1998-09-22
申请号：JP6431897
申请日：1997-03-18
申请人： MITSUBISHI HEAVY IND LTD
发明人： KADOYA YOSHIKUNI , KAWAI HISATAKA , TAKAHASHI KOJI , UMAGOE RYUTARO
IPC分类号： C21D6/00 , C22C38/00 , C22C38/52 , C22C38/54 , F01D5/28
摘要： PROBLEM TO BE SOLVED: To provide a ferritic heat resistant steel for forming a gas turbine rotor and a disk excellent in creep fracture strength at an high temp. and toughness at an ordinary temp. SOLUTION: This heat resistant steel has a compsn. contg., by weight, 0.08 to 0.25% carbon, 1.0 to 3.0% nickel, 9.0 to 12.5% chromium, 0.3 to 1.5% molybdenum, 1.0 to 3.0% tungsten, 0.10 to 0.35% vanadium, 0.02 to 0.10% niobium, 0.01 to 0.8% nitrogen, 0.001 to 0.01% boron, 1.0 to 5.0% cobalt, and the balance substantial iron and having a structure composed of a martensitic matrix.

76. 发明专利

JPH09192501A CATALYST STRUCTURE 失效
公开(公告)号：JPH09192501A
公开(公告)日：1997-07-29
申请号：JP1002596
申请日：1996-01-24
申请人： MITSUBISHI HEAVY IND LTD
发明人： BANDAI SHIGEMI , KAWAI HISATAKA , UEJIMA NAOYUKI
IPC分类号： F01N3/28 , B01J35/04 , F23D14/18 , F23R3/40
摘要： PROBLEM TO BE SOLVED: To obtain a catalyst structure which can control the increase of temperature when used as a support for a combustion catalyst and is prepared easily. SOLUTION: A catalytic active material 1 is attached to one side of a catalyst backing 6 on which higher projections 4a and lower projections are arranged alternately, the backings 6 are piled so that the tip of the higher projection 4a of a lower backing 6 is inserted into the shallow recession 5b of an upper backing 6 to form a catalyst structure. In this way, since the active material 1 is attached only to one side of the backing 6, the increase of temperature during operation can be controlled. Since the upper and lower backings 6 are fixed to each other by inserting the tip of the higher projection 4a into the shallow recession 5b, distortion during operation is reduced, the generation of troubles is controlled, and the catalyst structure easily manufacture is obtained.

77. 发明专利

JPH0941076A HIGH STRENGTH AND HIGH TOUGHNESS LOW ALLOY STEEL 失效
公开(公告)号：JPH0941076A
公开(公告)日：1997-02-10
申请号：JP19758795
申请日：1995-08-02
申请人： MITSUBISHI HEAVY IND LTD
发明人： KAWAI HISATAKA , KADOYA YOSHIKUNI , DATE SHINGO , UMAGOE RYUTARO , TSUJI ICHIRO
IPC分类号： C22C38/00 , C22C38/54
摘要： PROBLEM TO BE SOLVED: To develop a high-low pressure integrated rotor material for a steam turbine solo chamber excellent in creep fracture strength at a high temp. and usable at a high temp. by adding specified small amounts Co and Ti to a high strength and high toughness low alloy steel having a specified compsn. SOLUTION: A low alloy steel having a compsn. contg., by weight, 0.1 to 0.3% C,

78. 发明专利

JPH07292453A HEAT SHIELDING COATING METHOD FOR PREVENTING HIGH TEMPERATURE OXIDATION 失效
公开(公告)号：JPH07292453A
公开(公告)日：1995-11-07
申请号：JP8930094
申请日：1994-04-27
申请人： MITSUBISHI HEAVY IND LTD
发明人： KAYANO ISAMU , NAKAMORI MASAHARU , KAWAI HISATAKA
IPC分类号： C23C4/06 , C23C28/00
摘要： PURPOSE:To provide a heat shielding coating method applied to a metallic member in contact with high temp. gas. CONSTITUTION:In a heat shielding coating method applied to a metallic member in contact with high temp. gas, after a metallic member 1 is coated with a MCrAlY layer 2 (M: Ni and/or Co) by low pressure plasma spraying, a ZrO2-Y2 O3 layer 3 is subjected to atmospheric plasma spraying. Further, inorganic glaze 4 (if necessary, ZrO2-Y2O3 is mixed in.) is applied with a brush before it is sintered, or it is directly thermal-sprayed, allowing heat shielding coating for preventing high temp. oxidation to be applied. In this way, the time that it takes for the ZrO2-Y2O3 layer 3 to be peeled is prolonged.

79. 发明专利

JPH0665601A NI-BASE ALLOY POWDER 失效
公开(公告)号：JPH0665601A
公开(公告)日：1994-03-08
申请号：JP24411992
申请日：1992-08-20
申请人： MITSUBISHI MATERIALS CORP , MITSUBISHI HEAVY IND LTD
发明人： KAWAI HISATAKA , OKADA IKUO , TSUJI ICHIRO , TAKAHASHI KOJI , TORIGOE TAIJI , WADA MASAHIRO , SAHIRA TATEAKI , MIHASHI AKIRA
IPC分类号： B22F1/00 , C22C19/05
摘要： PURPOSE:To provide the Ni-base alloy powder from which excellent high-temp. heat resistant parts can be produced by a powder metallurgical method by slightly increasing the content of Cr, adding W, Mo, Al, etc., with favorable balance to the powder and adding Mg and Ca in a specific ratio thereto. CONSTITUTION:This Ni-base alloy powder contains, by wt %, 13.1-15.0 Cr, 8.5-10.5 Ca, 1.0 3.5 No, 3.5-4.5 W, 3.0-5.5 Ta, 3.5-4.5 Al, 2.2-3.2 Ti, 0.01-0.09 C, 0.005-0.025 B, 0.01-0.10 Zr and 1-100ppm Mg and/on Ca and the balance Ni. Further, 0.5-1.5, by wt %, Hf and/or

80. 发明专利

JPH0657355A PRODUCTION OF OXIDE DISPERSION STRENGTHENING ALLOY AND ITS DEVICE 失效
公开(公告)号：JPH0657355A
公开(公告)日：1994-03-01
申请号：JP21689692
申请日：1992-08-14
申请人： MITSUBISHI HEAVY IND LTD
发明人： KAWAI HISATAKA , OKADA IKUO
IPC分类号： B21C23/00 , B22F3/20 , B22F9/04 , C22C1/10
摘要： PURPOSE:To produce a reinforcing type alloy in which oxides particles are uniformly dispersed in a metal in a large quantity and in a short time by uniformly dispersing the oxide in a molten metal stream to form metal wires, pulverizing and sintering the wires by a hot extrusion. CONSTITUTION:The molten metal 1 (Ni base alloy, etc.) at about 1500 deg.C is poured from a tundish 2 and an inert gas 5 and oxide particles 6 (Al2O3, etc.) with about 2mm to 0.1mu particle size are blown on a molten metal stream 3 from a nozzle 4 to be uniformly dispersed (about 0.5 to 2% volumetric ratio). The molten metal 7 is introduced into a water-cooled bowl-shaped vessel 8 made of copper rotating at about 600rpm to form metal wires or metal ribbons 9, pulverized in an inert gas by using a ball mill to form metal powders 10 dispersed with oxide and is then vacuum-encapsulated in a tube 12 made of a mild steel. Then, metal powders with the tube 12 are heated to about 1100 deg.C and sintered by extrusion with a hot extruding machine to obtain the oxide dispersion reinforcing type alloy 13.

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