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21. 发明专利

JPH11246929A OXIDE-DISPERSED STEEL AND ITS PRODUCTION 失效
公开(公告)号：JPH11246929A
公开(公告)日：1999-09-14
申请号：JP5255698
申请日：1998-03-04
申请人： NAT RES INST METALS , MITSUBISHI HEAVY IND LTD
发明人： NAKAJIMA HIROSHI , TORITSUKA SHIRO , TSUZAKI KANEAKI , NAGAI HISASHI
IPC分类号： B22D7/00 , C21C7/00 , C22C33/04 , C22C38/00 , C22C38/14
摘要： PROBLEM TO BE SOLVED: To suppress the coarsening of crystal grains in the heat-affected zone of a steel and to improve its toughness by uniformly dispersing fine oxide in which the particle size is specified into a steel at specified dispersion density. SOLUTION: Into a steel, the oxide having dispersion density. The dispersion density is prescribed to the range from 1000 pieces/mm capable of allowing the oxide particles to exist in a state corresponding to the size of the particles of the steel structure, i.e., the state corresponding to about 30 μm to 10000 pieces/mm corresponding to the limit in the case the possibility of aggregation is low in >=1 μm distance between the particles of the oxide. This oxide- dispersed steel is produced by arranging a molten steel in slag consisting of either or both of oxide such as SiO2 , Al2 O3 or Na2 O and fluoride such as CaF2 , supercooling them and crystallizing out the oxide from the molten steel being into a supercooled state. The supercooled state denotes the state in which the molten soln, is held to the temp. less than the m.p., and as for the supercooling degree, the 1/5 of the m.p. of the material is taken as the maximum value.

22. 发明专利

JPH09192705A HOT ROLLING LINE 失效
公开(公告)号：JPH09192705A
公开(公告)日：1997-07-29
申请号：JP654696
申请日：1996-01-18
申请人： MITSUBISHI HEAVY IND LTD
发明人： HIRATA KOICHI , NAKAJIMA HIROSHI , FUJIOKA HIRONORI
IPC分类号： B21B1/34 , B21B1/46 , B21B13/22 , B22D11/04 , B22D11/05 , B22D11/06 , B22D11/12 , B22D11/128
摘要： PROBLEM TO BE SOLVED: To change the width of a slab during the operation of casting, to reduce the number of rolling mill and to shorten a line. SOLUTION: In a belt type continuous casting machine 1, a mold part 8 is formed with a pair of water-cooled belts 5 and a pair of side dams and, evev during casting, the width of a slab 51 which is formed and discharged is changeable by changing the positions of the side dams. In this way, the working rate of the line is elevated and supply of a thin slab is enabled. The finishing mill 6 is composed of a reverse finishing mill 6a in the first half and a finishing mill 6b in the second half and the a conventional roughing mill is omitted with the reverse finishing mill, the number of rolling mill is reduced and the line is shortened.

23. 发明专利

JPH09184009A EQUIPMENT FOR HEAT TREATMENT OF SLAB 失效
公开(公告)号：JPH09184009A
公开(公告)日：1997-07-15
申请号：JP34253595
申请日：1995-12-28
申请人： MITSUBISHI HEAVY IND LTD
发明人： HIRATA KOICHI , NAKAJIMA HIROSHI , FUJIOKA HIRONORI
IPC分类号： C21D1/00 , C21D9/00 , F27B9/24 , F27B9/30
摘要： PROBLEM TO BE SOLVED: To restrain the increase of an equipment size in the case of heat treating a long slab. SOLUTION: A slab heat treatment equipment is provided with a heating furnace body 1, a fixed side furnace hearth 8, a movable side furnace hearth 10, a slab supplying line 2 and a slab sending out line 3. Further, groove type skids 9a for standing-up and inserting the slab 11 arranged on the fixed side furnace hearth 8 and the movable side furnace hearth 10, respectively and standing up and supporting the slabs over plural lines in the direction of connecting an inlet part 1a to an outlet part 1b of the heating furnace body 1, a slab transferring device 5a for transferring the slab 11 from the slab supplying line 2 to near the inlet part 1a of the heating furnace body 1, a slab standing-up device 4a for standing up the slab 11 from the slab transferring device 5a and delivering it to the skids 8a, a slab falling-down device 4b for receiving and falling down the stood-up slab 11 at the end of the outlet part 1b of the hearing furnace body 1 and a slab transferring device 5b for receiving the slab 11 from the slab falling-down device 4b and delivering it to the slab sending-out line 3, are provided.

24. 发明专利

JPH08252655A BELT COATING MATERIAL FOR BELT TYPE THIN SLAB CASTER 失效
公开(公告)号：JPH08252655A
公开(公告)日：1996-10-01
申请号：JP5729495
申请日：1995-03-16
申请人： MITSUBISHI HEAVY IND LTD
发明人： NAKAJIMA HIROSHI , YAMANE TAKASHI , YONEDA JUNKICHI , HIRATA KOICHI
IPC分类号： C23C26/00 , B22D11/04 , B22D11/059 , B22D11/06
摘要： PURPOSE: To obviate the interposition of the scum existing in molten steel into a slab by attracting and removing the scum with a belt coating material for a belt type thin slab caster. CONSTITUTION: The molten steel 30 is supplied from a pouring nozzle 27 into a mold section 20 formed of a pair of belts 21 traveling around a pulley 22 and a pair of side dams 23 held by these belt and the slab 33 is drawn from below. The belt coating material 1 is applied from coating nozzles 25 onto the surfaces of the belts 21. The belt coating material 1 is prepd. by mixing powder consisting of 10 to 40wt.% SiO2 , 1 to 10wt.% Al2 O3 , 10 to 40wt.% CaO, 1 to 10wt.% Fe2 O3 and 0.1 to 10wt.% B2 O3 and having an average grain size of

25. 发明专利

JPH03208262A MANUFACTURE OF CONNECTING BODY BETWEEN SOLID HIGH POLYMER ELECTROLYTE MEMBRANE AND ELECTRODE 失效
公开(公告)号：JPH03208262A
公开(公告)日：1991-09-11
申请号：JP106690
申请日：1990-01-09
申请人： MITSUBISHI HEAVY IND LTD
发明人： FURUYA CHOICHI , ICHIKAWA KUNINOBU , WADA KO , HIRATA ISAO , NAKAJIMA HIROSHI , TAKEUCHI YOSHIYUKI
IPC分类号： H01M8/02 , H01M4/92 , H01M8/10
摘要： PURPOSE:To increase the reaction efficiency and to realize a high electric power by connecting a solid high polymer electrolyte membrane and a gas diffusion electrode in the condition to soften or solve the soild high polymer electrolyte membrane in alcohol. CONSTITUTION:Hydrophile reaction membranes 3A and 3B are formed at the ratio 0.7:7:3 of platinum of the mean particle diameter 50Angstrom , a hydrophile carbon black of the mean particle diameter 450Angstrom , and polytetrafluoroethylene of the mean particle diameter 0.3mum, and hydrophobic gas diffusion membranes 4A and 4B are formed at the ratio 7:3 of a hydrophobic carbon black of the mean particle diameter 420Angstrom and polytetrafluoroethylene of the mean particle diameter 0.3mum. They are superposed and rolled, and Pt 0.56mg/cm is held at the hydrophile reaction membrane side in the hydrogen chloroplatinate oxidization and reduction method to make into gas diffusion electrodes 2A and 2B. A perfluorosulfuric acid polymer membrane of the thickness 0.17mm is held between two sheets of such diffusion electrodes 2, and a hot press is applied in a mixture solution of the ratio 1:1 of isopropyle alcohol and a pure water in the condition at 120 to 130 deg.C and 60kg/cm to form a connecting body. In such a way, the connection is made easily, and the connecting body of a thin membrane thickness and a low movement resistance of H can be obtained.

26. 发明专利

JPH03208260A MANUFACTURE OF CONNECTING BODY BETWEEN SOLID HIGH POLYMER ELECTROLYTE MEMBRANE AND ELECTRODE 失效
公开(公告)号：JPH03208260A
公开(公告)日：1991-09-11
申请号：JP106490
申请日：1990-01-09
申请人： MITSUBISHI HEAVY IND LTD
发明人： FURUYA CHOICHI , ICHIKAWA KUNINOBU , WADA KO , HIRATA ISAO , NAKAJIMA HIROSHI , TAKEUCHI YOSHIYUKI
IPC分类号： H01M8/02 , H01M4/92 , H01M8/10
摘要： PURPOSE:To increase the reaction efficiency and to realize a high output by connecting a solid high polymer electrolyte membrane and a gas diffusion electrode in the condition to permeate in the reaction membrane of the gas diffusion electrode. CONSTITUTION:Hydrophile reaction membranes 3A and 3B are formed at the ratio 0.7:7:3 of platinum of the mean particle diameter 50Angstrom , a hydrophile carbon black of the mean particle diameter 450Angstrom , and polytetrafluoroethylene of the mean particle diameter 0.3mum, and hydrophobic gas diffusion membranes 4A and 4B are formed at the ratio 7:3 of a hydrophobic carbon black of the mean particle diameter 420Angstrom and polytetrafluoroethylene of the mean particle diameter 0.3mum. The reaction membranes 3 and the diffusion membranes 4 are superposed and rolled, and Pt 0.56mg/cm is held to the reaction membrane 3 side in the hydrogen chloroplatinate oxidization and reduction method to make into gas diffusion electrodes 2A and 2B. To the reaction membrane side of the electrodes 2, an alcohol solution of perfluorosulfuric acid polymer is spread. Two sheets of such gas diffusion electrodes 2 are connected at the reaction membrane sides, and a hot press is applied in the condition at 120 to 130 deg.C and 60kg/cm to make a connecting body. In such a way, the area the catalyst reaction is generated is increased, the adhesive strength is increased, and the moving resistance of H can be reduced.

27. 发明专利

JPH02311961A INSPECTING METHOD USING PICTURE PROCESSING TECHNIQUE 失效
公开(公告)号：JPH02311961A
公开(公告)日：1990-12-27
申请号：JP13502189
申请日：1989-05-29
申请人： MITSUBISHI HEAVY IND LTD
发明人： KATAURA MICHIO , NAKAJIMA HIROSHI
IPC分类号： G01N21/88 , G06T1/00
摘要： PURPOSE:To effectively use an inspecting method as a general method for developing a picture analyzing system and to simplify the expression of work by systematically arranging picture data in picture processing and analysis and symbol data equipped with various feature quantity by repeating a basic method based on knowledge engineering in respective processes. CONSTITUTION:In a picture input part 1, the picture data are taken out and in a picture processing part 2, conversion processing such as binary / density / color processing, etc., is executed to respective defects. In a festure extracting part, an edge, color or area, etc., is emphasized and the feature of each defect is extracted, converted to the feature quantity and sent to a picture analyzing part 3 to lead a result out. In the picture analyzing part 3, the feature quantity is collated with the pattern of data, which are stored in advance based on the feature quantity, and classified by defect items in a large level. Then, the feature quantity is calculated to each defect item and a program, for which the knowledge and know-how of a well-trained inspecting person is arranged and formulated to be a rule based on AI technique, is taken into the feature quantity. Then, the result is led out. Thus, planning can be easily executed.

28. 发明专利

JPH01259138A MANUFACTURE OF NON-ELECTRIC CONDUCTIVE GRAIN DISPERSION METAL 失效
公开(公告)号：JPH01259138A
公开(公告)日：1989-10-16
申请号：JP8730788
申请日：1988-04-11
申请人： MITSUBISHI HEAVY IND LTD
发明人： NAKAJIMA HIROSHI , HIRATA ISAO
IPC分类号： B22D19/14 , C22C1/10
摘要： PURPOSE:To manufacture a metal in which nonmetallic grains are uniformly dispersed by passing direct current to the molten metal in which non electric conductive grains are dispersed and mixed and cooling and solidifying it in a static magnetic field. CONSTITUTION:The molten metal 4 (such as Al) in which non-electric conductive grains 5 (such as Al2O3) are dispersed and mixed is charged to an insulated vessel 3. Direct current is passed to the molten metal 4 from a Cu electrode 1 and a static field is worked thereon with a coil 2 for a static magnetic field to cool and solidify the molten metal. At this time, the direct current is passed to the molten metal 4 in such a manner that power is generated in the same direction or reverse direction for gravity and the magnetic field is applied in the right-angled direction for an electric current; the strength of the electric current or the static magnetic field is controlled to regulate the electromagnetic power worked on the molten metal 4, so that the value of (gravity+ electromagnetic power) in the molten metal 4 is regulated to the same with that of the gravity in the nonmetallic grains 5. In this way, the solidified metal in which nonmetallic grains 5 are uniformly dispersed and mixed can be obtd.

29. 发明专利

JPS63139668A METHOD OF IMPROVING HYDROGEN-CORROSION COUNTERMEASURE FOR STRUCTURE MEMBER 失效
公开(公告)号：JPS63139668A
公开(公告)日：1988-06-11
申请号：JP28603786
申请日：1986-12-02
申请人： MITSUBISHI HEAVY IND LTD
发明人： EBARA RYUICHIRO , NAKAJIMA HIROSHI , ISHIBASHI YASUHIRO , MAKIMOTO HIROTOSHI
IPC分类号： B24C1/10
摘要： PURPOSE:To aim at enhancing the hydrogen-corrosion countermeasure by subjecting a welded metal part and thermally affected part of a welded structure member to shot-peeling treatment after it is welded and post-weld heat- treatment. CONSTITUTION:After a welded structure for a high temperature and high pressure hydrogen gas pressure container or the like, is welded and subjected to post-weld heat treatment, it is subjected to shot-peeling treatment. With this process, it is possible to prevent micro-strain which is liable to generate at the interface between carbide and the base, and therefore it is possible to prevent methanization due to the diffusion and collection of hydrogen to the above- mentioned parts, which are problems during residual tensile stress action, thereby it is possible to aim at enhancing the hydrogen corrosion resistance.

30. 发明专利

JPS62127457A SURFACE TREATMENT OF FILM 失效
公开(公告)号：JPS62127457A
公开(公告)日：1987-06-09
申请号：JP26812385
申请日：1985-11-28
申请人： MITSUBISHI HEAVY IND LTD
发明人： TAKAHASHI SADAMU , NAKAJIMA HIROSHI
IPC分类号： F01D5/28 , C23C4/18 , C23C14/58 , C23F15/00 , F01L3/02
摘要： PURPOSE:To eliminate pinhole defect in ceramic and cermet film and to improve high temp. corrosion resistance of base metal, by irradiating laser light on ceramic or cermet cover film formed on surface of base metal to partially melt it. CONSTITUTION:Ceramic such as Al2O3 and a cermet layer 12 such as WC-Co or Cr2O3-NiCr are formed by plasma spraying, vacuum vapor deposition method, etc., on surface of the plate material 13 exposed to high temp. corrosive atmosphere to cover the plate material 13 for improving the high temp. corrosion resistance. There is defect 14 such as pinhole in the ceramic and the layer 12, corrosive atmosphere enters from the pinhole 14 and base metal is corroded. For preventing this, CO2 laser light 15 is irradiated on the surface of the film 12 to fill the pinhole 14 with locally melted material and eliminate it.

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