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41. 发明专利

JPS56156753A COMPOSITE MATERIAL 失效
公开(公告)号：JPS56156753A
公开(公告)日：1981-12-03
申请号：JP5866080
申请日：1980-05-06
申请人： MITSUBISHI HEAVY IND LTD
发明人： FUKUDA MASAKATSU , KOUMOTO AKIRA
IPC分类号： C23C4/04 , C23C4/06
摘要： PURPOSE:To enhance the wear resistance, sound- and vibration-proofing properties of a metallic material by simultaneously build-up welding metallic powder and nonmetallic powder with a high m.p. to the material by melt-spraying to form a sprayed metallic layer contg. uniformly dispersed nonmetallic particles. CONSTITUTION:A composite material consisting of metallic and nonmetallic particles is build-up welded to the surface of a metallic material by spraying to enhance the wear resistance, sound- and vibration-proofing properties. At this time, a metallic material such as Al, Mg or Cu having 40-60mum size is mixed with a 5-50wt% nonmetallic material such as molding sand, SiO2, SiC, Si3N or Al2O3 having >= 800 deg.C high melting temp. and 50-100mum size, and the mixture is build-up welded in 0.5-10mm. thickness by plasma spraying, flame spraying or other method. The nonmetallic particles are uniformly dispersed in the metal of the sprayed layer to enhance the wear resistance and other characteristics.

42. 发明专利

JPS55158249A ASSCAST PEARLITE NODULAR GRAPHITE CAST IRON CASTING 失效
公开(公告)号：JPS55158249A
公开(公告)日：1980-12-09
申请号：JP6720379
申请日：1979-05-30
申请人： MITSUBISHI HEAVY IND LTD
发明人： FUKUDA MASAKATSU , ONO SHIYUUJI
IPC分类号： C22C37/04
摘要： PURPOSE:To provide an as-cast pearlite nodular graphite cast iron casting contg. C, Si, Mn, Cu, Cr and residual Mg each in a predetermined percentage other than the balance Fe and free from formation of a decarburized layer on the surface. CONSTITUTION:The above-mentioned casting is composed of C 3.3-3.6%, Si 1.6-2.1%, Mn 0.5-1.0%, Cu 0.8-1.2%, Cr 0.1-0.6%, residual Mg 0.03- 0.06% and the balance Fe. A decarburized layer (ferrite layer) is not formed on the surface of the casting, and no cementite is precipitated. Accordingly, the casting does not undergo a deterioration in mechanical properties, a lowering in fatigue strength, and surface cracking, and it is applicable to structural parts requiring pearlite nodular graphite cast iron of high strength.

43. 发明专利

JPS55109559A PRODUCTION OF BUBBLEEOCCLUDED METAL 失效
公开(公告)号：JPS55109559A
公开(公告)日：1980-08-23
申请号：JP1705379
申请日：1979-02-16
申请人： MITSUBISHI HEAVY IND LTD
发明人： FUKUDA MASAKATSU , KOUMOTO AKIRA , ONO SHIYUUJI
IPC分类号： C22C1/08 , B22D25/02 , B22D27/00
摘要： PURPOSE:To enable the foamed metal of the specified and uniform cell size to be obtained by blowing microbubbles in place of foaming agents into the molten metal. CONSTITUTION:Alloy 3 is melted by the crucible 2 in a melting furnace 1. When it reaches the temperature higher than its solidification temperature, the preheated bubble generator 5 is loaded into the molten alloy 3 and inert gas is blown through a vent pipe 4. Thence, pouring into an ordinary CO2 mold is done at the time when the microbubbles 6 of the inert gas have been sufficiently blown into the molten alloy 3. Here, the bubble generator 5 comprises closely fitting a cylindrical sintered filter 9 made of stainless steel to the vent pipe 4 having a stop metal 7 and provided with a plurality of vent pores 8 and securing the same by means of a bolt 10. Besides this, the similar effect is obtained even by using the one comprising securing a porous filter made of graphite or heat-resistant filter paper and stainless steel metal gauze to the vent pipe.

44. 发明专利

JPS5443814A HEAT TREATMENT METHOD FOR DAMPING ALLOY 失效
公开(公告)号：JPS5443814A
公开(公告)日：1979-04-06
申请号：JP11134177
申请日：1977-09-16
申请人： MITSUBISHI HEAVY IND LTD
发明人： KOUMOTO AKIRA , TAKEDA YORIMASA , FUKUDA MASAKATSU
IPC分类号： C22F1/16 , C22C9/00 , C22C9/05 , C22C22/00 , C22F1/00 , C22F1/08
摘要： PURPOSE:To simplify a process for heat treating a damping Mn-Cu-Ti alloy without deteriorating the damping capacity and mechanical properties by cooling the alloy of a specific compsn. from the soln. heat treatment temp. range under specific conditions. CONSTITUTION:An Mn-Cu-Ti alloy consisting of Cu; 20-55wt%, Ti

45. 发明专利

JPS5114116A 失效
公开(公告)号：JPS5114116A
公开(公告)日：1976-02-04
申请号：JP8534774
申请日：1974-07-25
申请人： MITSUBISHI HEAVY IND LTD
发明人： UEDA SHOJI , TAKEDA YORIMASA , HIROMOTO AKIRA , FUKUDA MASAKATSU
IPC分类号： C22C9/00 , C22C9/05 , C22C22/00

46. 发明专利

JPH08118024A ELECTROGAS ARC WELDING EQUIPMENT OF STAINLESS STEEL 失效
公开(公告)号：JPH08118024A
公开(公告)日：1996-05-14
申请号：JP26710494
申请日：1994-10-31
申请人： MITSUBISHI HEAVY IND LTD
发明人： FUKUDA MASAKATSU , INOUE KOBO
IPC分类号： B23K9/173 , B23K9/23 , B23K37/06
摘要： PURPOSE: To enable solution heat treatment of a butt weld zone of stainless steel thick plate even for large structure. CONSTITUTION: A welding equipment is provided with a rear backing strip 2 fixed to the rear side of a groove space 1a formed in the vertical direction between two base materials to be welded for butt welding, a front backing strip 3 arranged at the front side of the groove space 1a and sliding upward, a nozzle 4 to melt a welding wire 5 arranged in the groove space 1a and an injection outlet arranged at the lower part of the front backing strip and an injecting port injecting a cooling water 7 to the surface of the weld metal 6 which is solidified after the front backing strip 3 is passed. By this method, the weld metal 6 in high temp. right after welding is rapidly cooled by the cooling water 7 injected so as to prevent the weld zone between two base materials 1 to be welded from sensitization.

47. 发明专利

JPH0857652A SHIELD NOZZLE FOR NARROW GAP WELDING 失效
公开(公告)号：JPH0857652A
公开(公告)日：1996-03-05
申请号：JP19827094
申请日：1994-08-23
申请人： MITSUBISHI HEAVY IND LTD
发明人： FUKUDA MASAKATSU , INOUE KOBO
IPC分类号： B23K9/29
摘要： PURPOSE: To change the part greatly damaged only, further to reduce production cost and to make mounting/dismounting easy by making a shield nozzle for narrow gap welding changeable and separate type. CONSTITUTION: Left/right symmetrical two lower nozzles B for improving shielding of weld zone are mounted under an upper nozzle A for narrow gap welding. By fitting two fastening holes 4 arranged in the longitudinal direction of upper nozzle A to projecting parts arranged to both faces in the longitudinal direction of lower nozzles B, Joining between the upper nozzle A and lower nozzles B is integrated by inserting lower nozzles B, B to the upper nozzle A from rear. In welding in a narrow gap with use of this shield nozzle, the tip of shield nozzle is close to weld zone and is exposed to high temp. to be eroded and the shielding performance is deteriorated. In this case, the lower nozzle only is simply changed and welding is executed.

48. 发明专利

JPH06324008A METHOD FOR ESTIMATING STRENGTH OF SILICON NITRIDE SINTERED BODY 失效
公开(公告)号：JPH06324008A
公开(公告)日：1994-11-25
申请号：JP13290493
申请日：1993-05-11
申请人： MITSUBISHI HEAVY IND LTD
发明人： UMADA MASAHIRO , FUKUDA MASAKATSU , NISHIMURA NOBUHIKO , HASEZAKI KAZUHIRO
IPC分类号： G01N23/207
摘要： PURPOSE:To estimate the bending strength of a silicon nitride sintered body by measuring the diffraction X-ray intensity of a sintered body surface exposed at a high temperature, obtained the intensity ratio with the X-ray intensity of an unused material, and then using the relationship among a diffraction X-ray intensity obtained in advance, the intensity ratio, exposure time, and bending strength. CONSTITUTION:X rays are applied to the surface of silicon nitride sintered body exposed at a high temperature and then diffraction X-ray intensity is measured. The relationship among the diffraction X-ray intensity obtained in advance or intensity ratio, and exposure time and bending strength is used to estimate bending strength according to the X-ray intensity from an arbitrary diffraction surface of beta-Si3N4 phase which is mother ground or the diffraction intensity and the ratio for the X-ray intensity from the same diffraction surface of an unused material and then exposure time utilizing a property that the thickness of a surface oxide layer increases and the bending strength is reduced when the exposure time increases and at the same time diffraction X-ray intensity toward an outer surface is reduced.

49. 发明专利

JPH0633154A MELTING AND SEPARATING METHOD OF METAL 失效
公开(公告)号：JPH0633154A
公开(公告)日：1994-02-08
申请号：JP18929092
申请日：1992-07-16
申请人： MITSUBISHI HEAVY IND LTD
发明人： FUKUDA MASAKATSU , SHIMAMOTO TAKIJIRO
IPC分类号： C22B9/02 , C22C1/02
摘要： PURPOSE:To completely separate a metal of a low sp.gr. and high m.p. and a metal of a high sp.gr. and low m.p. in the form of solid and molten metals by melting a mixture composed of the both metals and cooling the melts to the temp. between the m.p. of the two metals. CONSTITUTION:The metal mixture composed of, for example, Fe and Cu, varying in the sp.gr. and the m.p. is charged into a melting furnace 1 and a high-frequency induction heating coil 2 on the side wall of the melting furnace 1 is energized to melt the metal mixture composed of the Fe and the Cu. The molten metal 4 of the Cu having the large sp.gr. settles in the lower part and the molten metal 3 of the Fe having the small sp.gr. floats in the upper part. The molten metal in the mixed state of the Fe and the Cu exists in the intermediate part thereof. The current of the high-frequency induction heating coil 2 is then gradually decreased to slowly cool the two molten metal layers 3, 4. The layers are thus cooled to, for example, 1200 deg.C intermediate temp. of 1083 deg.C which is the m.p. of the Cu and 1540 deg.C which is the m.p. of the C and the Fe. The Fe 3 having the high m.p. is solidified to the solid Fe which floats on the molten metal 4 of the Cu of the low m.p. The Fe in the intermediate part of both solidifies as well and floats on the molten Cu 4, by which the Fe is separated. An ejection port 6 in the bottom of the melting furnace 1 is opened to discharge the Cu in the molten state which is thus separated from the Fe 3.

50. 发明专利

JPH05137953A AXIAL FLOW FAN FOR FLUE GAS DESULFURIZATION APPARATUS 失效
公开(公告)号：JPH05137953A
公开(公告)日：1993-06-01
申请号：JP30220791
申请日：1991-11-19
申请人： MITSUBISHI HEAVY IND LTD
发明人： HASEGAWA SHIGEO , KITAMURA HARUO , NISHIDA CHOTARO , IDAKA HIDEHIKO , FUKUDA MASAKATSU
IPC分类号： B01D53/46 , B01D53/34
摘要： PURPOSE:To prevent the electrolytic corrosion of a metallic material of a base material and to greatly improve the durability of the axial flow fan by coating the surface of the rotor vanes and stationary vanes made of metal of the axial flow fan with an insulating material of an org. system or ceramics. CONSTITUTION:The axial flow fan constituted by coating the surface of the rotor vanes made of 'Inconel(R)' with, for example, an epoxy resin or glass flake-contg. vinyl ester resin or mounting the vanes thermally sprayed with a tungsten carbide or Al2O3 to the fan or the axial flow fan constituted by further coating the stationary vanes made of SUS with, for example, a glass flake-contg. bisphenol resin or the axial flow fan constituted by thermally praying the tungsten carbide or the Al2O3 to the stationary vanes made of the 'Inconel(R)' is installed still in the outlet duct of the absorption column of a coal-firing flue gas desulfurization apparatus of a coal gypsum method for treating waste gases. These axial flow fans are not corroded at all even if fuel is switched to coal after combustion of a C-oil (boiler fuel) at the time of rising of a boiler and even if this apparatus if continuously operated for one year.

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