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21. 发明专利

JP2004188958A Dense ceramics sheet and its manufacturing method 有权
公开(公告)号：JP2004188958A
公开(公告)日：2004-07-08
申请号：JP2003285011
申请日：2003-08-01
申请人： Mitsui Mining & Smelting Co Ltd , 三井金属鉱業株式会社
发明人： UCHIDA TATSUHIKO , KAJINO HITOSHI , HOSHINO KAZUTOMO
IPC分类号： C04B35/622 , B28B3/20 , B28B11/10 , H01B1/06 , H01M8/02 , H01M8/12
CPC分类号： Y02P70/56
摘要： PROBLEM TO BE SOLVED: To inexpensively mass-produce an extremely thin dense ceramics sheet having a large surface area by an extruding method. SOLUTION: The dense ceramics sheet showing a relative density of not less than 96% after sintering and a volumetric shrinkage ratio of not more than 45% after sintering is manufactured by kneading extremely fine powder having an average diameter of not more than 1μm and extremely fine powder having an average diameter of 1 to 5μm with a water-based binder and water to produce a mixture, extruding the mixture followed by drying to produce a green sheet having a relative density of not less than 50% after drying and then sintering it. COPYRIGHT: (C)2004,JPO&NCIPI

22. 发明专利

JP2004137114A Tool for firing electronic parts 审中-公开
标题翻译：电子零件工具
公开(公告)号：JP2004137114A
公开(公告)日：2004-05-13
申请号：JP2002303950
申请日：2002-10-18
申请人： Mitsui Mining & Smelting Co Ltd , 三井金属鉱業株式会社
发明人： HOSHINO KAZUTOMO , KAJINO HITOSHI , UCHIDA TATSUHIKO , IZUTSU YASUHISA , HORIUCHI KOJI
IPC分类号： C04B41/87 , C04B35/64
摘要： PROBLEM TO BE SOLVED: To provide a tool for firing electronic parts which is formed by an inexpensive thick film forming method and has a zirconia layer having excellent thermal shock resistance. SOLUTION: The tool for firing electronic parts which is formed by including a base material and the zirconia layer covering the surface of the base material, is characterized in that the thermal shock resistance ΔT (=T1-T2) expressed as quench temperature difference in which the lowering of strength occurs in the quench bending test of the tool for firing the electronic componen through the quench temperature difference from a prescribed temperature T1 to T2 is ≥400°C. COPYRIGHT: (C)2004,JPO
摘要翻译：解决的问题：提供一种通过廉价的厚膜形成方法形成的电子部件的烧成工具，具有耐热冲击性优异的氧化锆层。解决方案：通过包括基材和覆盖基材表面的氧化锆层形成的用于点燃电子部件的工具的特征在于表示为淬火温度的耐热冲击性ΔT（= T1-T2）在通过从规定温度T1〜T2的骤冷温度下烧制电子部件的工具的淬火弯曲试验中发生强度降低的差别为≥400℃以下。版权所有（C）2004，JPO

23. 发明专利

JP2002301665A GRINDING WHEEL AND ITS MANUFACTURING METHOD 失效
公开(公告)号：JP2002301665A
公开(公告)日：2002-10-15
申请号：JP2001103199
申请日：2001-04-02
申请人： MITSUI MINING & SMELTING CO , MITSUI KENSAKU TOISHI KK
发明人： KAJINO HITOSHI , NAKAJIMA YUKI , HOSHINO KAZUTOMO , SATO MASAKAZU , YAMASHITA KATSUHIKO , SAKAI AKIRA
IPC分类号： B24D3/00 , B24D3/14 , B24D3/28
摘要： PROBLEM TO BE SOLVED: To provide a grinding wheel capable of keeping high bite, high surface roughness and a high grinding rate over a long time and having a long grinding life. SOLUTION: This grinding wheel is characterized by being manufactured by using abrasive grains formed by covering their surfaces with a binding material, and having an uneven coverage for individual abrasive grains and an overall coverage of 85% or more for all the individual abrasive grains. When it is assumed that a coverage for the abrasive grains with the surfaces thereof completely covered with the binding material is 100%, that for those with the surfaces generally covered is 90%, that for those with the surfaces incompletely covered and with part of the surfaces thereof exposed is 50% and that for those with the surfaces almost non-covered is 0%, the grinding wheel is manufactured by using an abrasive coating wherein the abrasive grains having the different coverages coexist and the overall coverage for all the individual abrasive grains is 85% or more. In the grinding wheel, the binding material for covering the abrasive grains belongs to a vitrified group or a resinoid group, and the maximum grain diameter of the binding material is 1/5 or less of the average diameter of the abrasive grains.

24. 发明专利

JP2001038633A VITRIFIED GRINDING WHEEL 失效
公开(公告)号：JP2001038633A
公开(公告)日：2001-02-13
申请号：JP22010699
申请日：1999-08-03
申请人： MITSUI MINING & SMELTING CO , MITSUI KENSAKU TOISHI KK
发明人： KAJINO HITOSHI , HOSHINO KAZUTOMO , KUNISAKI TOSHIYA , IMAI MICHIO
IPC分类号： B24D3/00 , B24D3/14 , C09K3/14
摘要： PROBLEM TO BE SOLVED: To provide a vitrified grinding wheel capable of maintaining the excellent sharpness and high grinding ratio for a long time, difficult to generate the loss in shape, capable of increasing the dress interval with excellent grinding efficiency. SOLUTION: In this grinding wheel, brown alumina abrasive grains are bound with other abrasive grains using a vitrified binder. Other abrasive grains include at least one kind of white alumina abrasive grains, rose-pink alumina abrasive grains, pulverized alumina abrasive grains, black silicon carbide abrasive grains and green silicon carbide abrasive grains. The ratio of the brown alumina abrasive grains to the total of the brown alumina abrasive grains and other abrasive grains is 3-20 vol.%.

25. 发明专利

JP2000015023A FILTER FOR MOLTEN METAL 失效
公开(公告)号：JP2000015023A
公开(公告)日：2000-01-18
申请号：JP18382298
申请日：1998-06-30
申请人： MITSUI MINING & SMELTING CO
发明人： HOSHINO KAZUTOMO , KUNISAKI TOSHIYA , SHIRAISHI YUKIHISA , HOSHI TOMOICHI
IPC分类号： B01D39/20 , B22D43/00 , C04B38/00
摘要： PROBLEM TO BE SOLVED: To provide a filter for a molten metal which causes no secondary pollution of molten aluminum even in the case of being brought into contact with molten aluminum, has high and even bonding force in the aggregate in the whole body of the filter and high strength, and is stably usable for a long duration. SOLUTION: This filter material is made of a sintered body of a mixture containing 100 pts.wt. of 1 or more aggregate particles selected from alumina particle and a group of spinel crystal particles of Al2O3-MgO and 5-25 pts.wt. of a frit binder obtained by melting a mixture of 60-90 wt.% of spinel crystal powder of Al2O3-MgO, 5-12 wt.% of B2O3, and not more than 30 wt.% of one or more oxides selected from Al2O3, MgO, and TiO2 and quenching the melted mixture.

26. 发明专利

JPH10313136A COOLING DEVICE FOR HIGH-TEMPERATURE SUPERCONDUCTING MAGNETIC SHIELDING BODY 失效
公开(公告)号：JPH10313136A
公开(公告)日：1998-11-24
申请号：JP13452597
申请日：1997-05-09
申请人： SUMITOMO HEAVY INDUSTRIES , RIKAGAKU KENKYUSHO , YUSEISHO TSUSHIN SOGO KENK , MITSUI MINING & SMELTING CO , NIPPON KEIKI WORKS
发明人： NARASAKI KATSUHIRO , TSUNEMATSU SHOJI , FURUYABU YUKIO , OTA HIROSHI , HOSHINO KAZUTOMO , KOIKE ATSUSHI , SUDO HIDEKAZU , KAMEGAWA YUTAKA , NAKAYAMA KIYOSHI , SHIMIZU TERUO
IPC分类号： H01L39/00 , H01L39/04
摘要： PROBLEM TO BE SOLVED: To provide a cooling device, which can cool a magnetic shielding body at 90 K or lower, without feeding a refrigerant for a cooling of the magnetic shielding body, is easy to handle, can be operated continuously for a long term and enables the magnetic shielding body to obtain good magnetic shielding characteristic. SOLUTION: A high-pressure piping 26 and a low-pressure return piping 27 of a cooling device 20 using helium gas as a cooling circulating medium are respectively connected with the entrance and exit of a cooling tube 5 of a high-temperature superconducting megnetic shielding body 1, comprising a high-temperature superconductor is adhered to the inner peripheral surface of a cylindrical magnetic shielding substrate 3, the cooling tube 5 is piped on the outer peripheral surface of the substrate 3 in a zigzagged shape in the axial direction of the substrate 3 for welding the tube 5 to the substrate 3, and the upper surfaces of these of the cooling tube 5 and the substrate 1 are covered with a heat insulating material 9. Thereby, the body 1 can be easily cooled at 90 K or lower.

27. 发明专利

JPH0779045B2 失效
公开(公告)号：JPH0779045B2
公开(公告)日：1995-08-23
申请号：JP3654291
申请日：1991-02-07
申请人： MITSUI MINING & SMELTING CO
发明人： NUMATA KOICHI , HOSHINO KAZUTOMO
IPC分类号： H01F6/00 , H01R4/68

28. 发明专利

JPH0614899A CEREBRAL MAGNETIC FIELD MEASURING INSTRUMENT 失效
公开(公告)号：JPH0614899A
公开(公告)日：1994-01-25
申请号：JP31835491
申请日：1991-11-06
申请人： MITSUI MINING & SMELTING CO , RIKAGAKU KENKYUSHO
发明人： OTA HIROSHI , HOSHINO KAZUTOMO
IPC分类号： A61B5/05 , A61B5/04 , G01R33/035 , H01L39/22
摘要： PURPOSE:To constitute the measuring instrument to a practicable size at a low cost by inserting a multichannel SQUID fluxmeter into a magnetically shielded container from its top part, providing cryostats for cooling of the container and fluxmeter, respectively further, providing a magnetic field detector in the container, signally coupling the fluxmeter and the magnetic field detector and constituting attachably and detachably of the instrument. CONSTITUTION:The cryostat 4 for cooling is provided in the oxide superconductive magnetically shielded container 3. The multichannel SQUID fluxmeter 1 and the cryostat 2 for cooling of the SQUID are inserted into the magnetically shielded container 3 from the top part of the container 3. The magnetic field detector 5 for detecting magnetic field intensity is installed in the container 3. The SQUID fluxmeter 1 and the magnetic field detector 5 are signally connected by a signal juncture part 6. The SQUID fluxmeter 1 and the magnetic field detector 5 are attachably and detachably constituted. Consequently, the magnetically shielded container is so sized that the container can be sufficiently installed into an ordinary magnetically shielded chamber and laboratory. The SQUID is attachable and detachable to and from the magnetic field detector, and therefore, allows easy maintenance.

29. 发明专利

JPH0557760B2 失效
公开(公告)号：JPH0557760B2
公开(公告)日：1993-08-24
申请号：JP22287988
申请日：1988-09-06
申请人： MITSUI MINING & SMELTING CO , RIKAGAKU KENKYUSHO
发明人： SHIGEMATSU KOJI , HOSHINO KAZUTOMO , TAKAHARA HIDEFUSA , AONO MASAKAZU , OOTA HIROSHI
IPC分类号： H01L39/00 , H05K9/00

30. 发明专利

JPH04263768A COOLING METHOD OF SUPERCONDUCTIVE MAGNETIC SEALED VESSEL AND DEVICE THEREFOR 失效
公开(公告)号：JPH04263768A
公开(公告)日：1992-09-18
申请号：JP4539691
申请日：1991-02-19
申请人： MITSUI MINING & SMELTING CO , RIKAGAKU KENKYUSHO , SUMITOMO HEAVY INDUSTRIES
发明人： OTA HIROSHI , ODAKA HIROBUMI , HOSHINO KAZUTOMO
IPC分类号： F25D3/10 , H01L39/04
摘要： PURPOSE:To prevent the generation of earth magnetism trap by a method wherein the whole of an oxide superconductive magnetic sealed vessel is cooled to a low temperature while making the center of the vessel the lowest temperature and providing temperature gradients sequentially from the center to the periphery of an outer end surface, a circumferential wall and the tip end of an opening end. CONSTITUTION:A helium gas circulating type refrigerating machine 9 is cooled to a temperature lower than the level temperature of liquid nitrogen by supplying helium gas passing through a high-pressure gas pipeline 11 and a compressor 10. On the other hand, the helium gas is returned into the compressor 10 through a low-pressure gas pipeline 12 and, thereafter, is supplied again to the compressor 10. Then cold heat is transferred from a cold head 5 to a heat transfer rod 4 and an inside vacuum vessel 2. In this case, the center of a sealed vessel 1 is cooled to the lowest temperature and the whole of a superconductive body is cooled to a low temperature lower than the critical temperature of the superconductive body while providing temperature gradients sequentially from the center of the vessel 1, to the periphery of an outer end surface, a peripheral wall and the tip end of the opening end whereby the whole of the device is cooled to a low temperature lower than the critical temperature of the whole of the superconductive body. Accordingly, the heat conductivities of respective heat conductive bodies A-D are changed in accordance with the temperature gradients.

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