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21. 发明专利

JPH09316607A CAST CORROSION RESISTANT MATERIAL FOR DESULFURIZING FAN 失效
公开(公告)号：JPH09316607A
公开(公告)日：1997-12-09
申请号：JP15051096
申请日：1996-05-23
申请人： MITSUBISHI HEAVY IND LTD
发明人： TAKEDA YASUYUKI , HIROMATSU KAZUO , TSUKIMOTO TADASHI , SAITO MASAHIRO , NISHIO TOSHIAKI
IPC分类号： C22C38/00 , C22C38/22
摘要： PROBLEM TO BE SOLVED: To develop a corrosion resistant material for a sulfurizing fan excellent in resistance to pitting corrosion caused by sulfuric acid by adding and incorporating specified amounts of Cr, Mo and Cu into Fe. SOLUTION: In a boiler or the like using heavy oil, coal, etc., corrosive exhaust gas contg. sulfuric acid is generated by gaseous SO2 and gaseous H2 O generated by the combustion of the above fuel, and as the material for a desulfurizing fan for excluding the above, an Fe-Cr-Mo-Cu alloy is used, and the desulfurizing fan is cast. The cast corrosion resistant material having excellent resistance to pitting corrosion caused by sulfuric acid can be obtd. at a low cost.

22. 发明专利

JPH09166305A BURNER FLAME INSULATOR 失效
公开(公告)号：JPH09166305A
公开(公告)日：1997-06-24
申请号：JP32879495
申请日：1995-12-18
申请人： MITSUBISHI HEAVY IND LTD
发明人： NOTOMI HIROSHI , TSUNODA HIDEO , ARAKI TADAYOSHI , SASAI TETSUICHI , TAKEDA YASUYUKI
IPC分类号： F23D11/24
摘要： PROBLEM TO BE SOLVED: To improve adhesion and endure thermal stress and thermal deformation by providing a circumferential groove in a surface receiving radiation of a flame on the side of an outer periphery of the surface, and injecting a Ni alloy of a specific component. SOLUTION: This burner flame insulator 1 comprises a main structure part 1a and an injected coating film 1b. The injected coating film 1b is constructed by injecting a Ni alloy containing 45 to 65wt% Cr or 30 to 60wt.% and 4 to 8wt.% Al on the surface of the main structure part 1a with the thickness of 0.4 to 1.5mm. A plurality of the grooves 1c are formed in the outer periphery of the main structure part 1a, extending circumferentially with each stripe of the groove having the depth and width formed into 0.1-to 1.0mm. The injected coating film 1b is constructed with a high temperature oxidization resistant and high temperature corrosion resistance material in such a manner, so that it endures thermal stress and thermal deformation, and further it is laminated on the surface of the main structure part 1a and enters each groove 1c so that adhesion to the main stricture part 1a is improved.

23. 发明专利

JPH07254433A MANUFACTURE OF POSITIVE ELECTRODE CONTAINER FOR SODIUM MOLTEN-SALT SECONDARY BATTERY 失效
公开(公告)号：JPH07254433A
公开(公告)日：1995-10-03
申请号：JP4221194
申请日：1994-03-14
申请人： MITSUBISHI HEAVY IND LTD
发明人： TAKEDA YASUYUKI , KUSANO TOYOAKI , NOTOMI HIROSHI
IPC分类号： C23C10/28 , H01M10/39
摘要： PURPOSE:To improve corrosion resistance of a container, and prevent deterioration of battery performance by flame coating W to a surface of a Cr plating layer provided on an inner surface of a positive electrode container of Ni, providing an Ni-P plating layer on the surface, applying heat treatment, and forming a mutual diffusion layer between Ni and flame coated W. CONSTITUTION:A Cr plating layer 10mum thick is formed on a surface of an Ni base material for a positive electrode container for a sodium molten-salt secondary battery in an electroless plating method. Flame coating of W about 80mum thick is formed on the surface using a beam exposure flame coating method. Next, it is heated at 900 deg.C for 5min., in a vacuum heating furnace. An Ni-P plating layer on the surface of the W flame coating is fused by heat treatment to invade inside through pores in the W coating to close the pores. Ni-P invading into the coating is mutually diffused with the W coating to form a dense coating. In addition, the Cr plating layer provided between the W coating and the positive electrode container material restricts diffusion of the positive electrode container material (Ni) to the W coating properly, so diffusion void generated in the positive electrode container is prevented, while diffusion layers with the positive electrode container material, Cr plating layer, and W coating are generated, thereby adhesion of the coating can be improved.

24. 发明专利

JPH0636890A PLASMA SPRAYING TORCH 失效
公开(公告)号：JPH0636890A
公开(公告)日：1994-02-10
申请号：JP21090692
申请日：1992-07-15
申请人： MITSUBISHI HEAVY IND LTD
发明人： TAKEDA YASUYUKI , NOTOMI HIROSHI
IPC分类号： C23C4/00 , C23C4/12 , H05H1/34 , H05H1/42
摘要： PURPOSE:To prevent the adhesion of a spraying powder to a negative electrode and the welding loss of the negative electrode without losing the axial feed of the spraying powder to a plasma jet and the stability of plasma. CONSTITUTION:In a plasma spraying torch provided with a positive electrode having a plasma generating chamber 2 having a plasma jet nozzle 3 on the top end and an operating gas feed passage 5 having an insulator 4 bonded to its base part and continued to the plasma generating chamber 2; and a negative electrode 9 provided through the central part of the insulator 4, its top end being situated in the plasma generating chamber 2, and having an operating gas and flame coating powder feed passage 8 in the center part, the negative electrode 9 is formed of a copper negative electrode 9 having a cooling water passage 10 and HfC or ZrCl 12 on the top end, and a Tic coating film 13 is formed on the negative electrode inner surface in the plasma generating chamber 2.

25. 发明专利

JPH05339693A 失效
公开(公告)号：JPH05339693A
公开(公告)日：1993-12-21
申请号：JP14567892
申请日：1992-06-05
申请人： MITSUBISHI HEAVY IND LTD
发明人： NOTOMI HIROSHI , TAKEDA YASUYUKI
IPC分类号： C23C4/04
摘要： PURPOSE:To provide a thermal-spraying material having a high wear resistance by regulating the content of an iron powder having a specified diameter added with metallic elements of a specified range to a specified value or below. CONSTITUTION:This thermal-spraying material is produced by adding 5.0-6.5wt.% C, 15-25wt.% Cr, 1-6wt.% Mo, 3-10wt.% V and 0.1-0.4wt.% B to iron contg. inevitable impurities so as to form a powder whose content of particles having >=50mum diameter is regulated to be

26. 发明专利

JPH03131583A PRODUCTION OF SINTERED MATERIAL 失效
公开(公告)号：JPH03131583A
公开(公告)日：1991-06-05
申请号：JP26912889
申请日：1989-10-18
申请人： MITSUBISHI HEAVY IND LTD
发明人： NOTOMI HIROSHI , TSUNODA HIDEO , TAKEDA YASUYUKI , SHIMOMICHI MASAYOSHI
IPC分类号： C04B41/87
摘要： PURPOSE:To continuously perform sintering and coating in good productivity by sintering a molded material of powder of metal or ceramics, etc., with heating in a high-frequency inductive coupled plasma and performing coating with supplying a raw material generating a coating material to the plasma. CONSTITUTION:Metal powder or ceramic powder (e.g. SiO3N4 powder) is press- molded to obtain a base material 7 and the base material is held with a base material holder 8 to set in a quartz tube 3. Next, Ar gas, etc., is supplied from a surrounding gas-supplying part 5 and a central gas-supplying part 6 and simultaneously a high-frequency oscillator 2 is driven, then a plasma is generated in the quartz tube 3 to sinter the base material 7 with heat. Thus, a raw material (e.g. SiCl4 and CH4) generating a coating material in the high-frequency inductive coupled plasma is introduced from the central gas-supplying part 6 and the coating material (e.g. SiC) is generated to perform coating on the surface of the sintered base material 7.

27. 发明专利

JPH02175854A FORMATION OF POROUS THERMALLY SPRAYED COATING FILM 失效
公开(公告)号：JPH02175854A
公开(公告)日：1990-07-09
申请号：JP32977988
申请日：1988-12-27
申请人： MITSUBISHI HEAVY IND LTD
发明人： TAKEDA YASUYUKI , NOTOMI HIROSHI
IPC分类号： C04B38/06 , C23C4/04 , C23C4/18
摘要： PURPOSE:To easily form a porous thermally sprayed coating film having a desired porosity and superior porousness by mixing ceramic powder or metal powder with crystalline cellulose, thermally spraying the mixture and heating the resulting thermally sprayed coating film to remove the cellulose. CONSTITUTION:Ceramic powder or metal powder as a material for forming a porous thermally sprayed coating film is mixed with crystalline cellulose and the mixture is thermally sprayed by plasma spraying or other method. The resulting thermally sprayed coating film is heated at about 500 deg.C for about 5hr in an inert gaseous atmosphere. By this heating, only the cellulose is decomposed and removed while leaving the thermally sprayed particles and the thermally sprayed coating film is made porous. Thus, a porous thermally sprayed coating film having superior porousness is obtd. The porosity of the porous thermally sprayed coating film can be controlled by changing the mixing ratio of the crystalline cellulose.

28. 发明专利

JPS62213862A PLASMA FLAME-SPRAYING METHOD 失效
公开(公告)号：JPS62213862A
公开(公告)日：1987-09-19
申请号：JP5410186
申请日：1986-03-12
申请人： MITSUBISHI HEAVY IND LTD
发明人： NOTOMI HIROSHI , TAKEDA YASUYUKI
IPC分类号： B05B7/22
摘要： PURPOSE:To increase jet energy without increasing an arc current or voltage and to attain to enhance the quality of a film, by applying high frequency of a radio frequency region to the plasma jet injected from a nozzle from the outer circumference. CONSTITUTION:In operating a flame spraying gun, operation gas is supplied into an anode nozzle 2 and no-load voltage of 120V is applied between the anode nozzle 2 cooled by water and a cathode 3 and, when a high frequency generator 9 is turned ON, a plasma jet 11 is generated from the anode nozzle 2. Next, when the high frequency current from a radio frequency oscillator 12 is applied to the coil 10 arranged so as to surround the plasma jet 11, the atoms or molecules in the plasma jet are further excited to be heated to high temp. and the length of the plasma jet 11 is elongated. As a result, the densification and adhesion strength of a flame-sprayed film increase.

29. 发明专利

JPS62207852A METHOD FOR CONTROLLING THICKNESS OF THERMALLY SPRAYED FILM 失效
公开(公告)号：JPS62207852A
公开(公告)日：1987-09-12
申请号：JP5187986
申请日：1986-03-10
申请人： MITSUBISHI HEAVY IND LTD
发明人： NOTOMI HIROSHI , TAKEDA YASUYUKI
IPC分类号： C23C4/00 , C23C4/12
摘要： PURPOSE:To exactly calculate and control the thickness of a thermally sprayed film during thermal spraying by determining the thickness of the sprayed film by using an ultrasonic rangefinder during spraying of spraying particle groups with a plasma spraying gun which move back and forth to the spraying surface of a material to be thermally sprayed. CONSTITUTION:The surface 1a to be thermally sprayed of the material 1 to be thermally sprayed and parallel rails 8 are fixed and in this state the distance from the ultrasonic rangefinder 5 up to the surface 1a is measured. The distance in this stage is the thickness 'do' when the thickness of the film 2 to be thermally sprayed is O. The plasma spraying gun 4 is then operation to generate the spraying particle groups 3 and at the same time, the gun is moved back and forth on the rails 8. The distance between the rangefinder 5 and the surface 1a is determined at every n-time of the forward and backward movement of the spraying gun 4. the thickness of the film 2 at the n-th time of the forward and backward movement of the spraying gun 4 is expressed by Ta=dn-do. The thermal spraying operation is ended in order to complete the constitution of the initially set film to be thermally sprayed. As a result the thickness of the film 2 measured with a micrometer coincides with the result of the measurement by the rangefinder 5.

30. 发明专利

JPS61169738A CUTTING AND GRINDING OF SPRAY-COATED FILM 失效
公开(公告)号：JPS61169738A
公开(公告)日：1986-07-31
申请号：JP839785
申请日：1985-01-22
申请人： MITSUBISHI HEAVY IND LTD
发明人： NOTOMI HIROSHI , TAKEDA YASUYUKI
IPC分类号： G01N1/32 , G01N1/28
摘要： PURPOSE:To enable the making of a sample for microscope observation of a spray coated film free from chipping and sagging, by applying an adhesive at the cut of the spray-coated film to be hardened to protect the spray-coated film prior to the cutting and grinding thereof. CONSTITUTION:An epoxy resin based adhesive 4 is applied at the thickness of several mm and hardened on the surface of a spray-coated film 2 to be cut to protect the spray coated film 2. Then, the surface of the spray-coated film 2 is cut or ground as protected by the epoxy resin based adhesive 4. The protection of the surface of the spray-coated film 2 by the epoxy resin based adhesive 4 eliminates chipping thereof during the cutting and sagging thereof during the grinding thereby enabling accurate judgement on the state and thickness of the spray-coated film 2 by microscopic observation of the section 3 of the film.

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