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11. 发明专利

JPH04246102A METHOD FOR CLEANING SURFACE OF PULVERIZED METAL POWDER 失效
公开(公告)号：JPH04246102A
公开(公告)日：1992-09-02
申请号：JP2949391
申请日：1991-01-29
申请人： DAIDO STEEL CO LTD
发明人： TAKAGI SHINOBU , SHIMIZU TAKASUMI , MATSUYAMA MAKOTO
IPC分类号： B22F1/00
摘要： PURPOSE:To prevent the coagulation of metal grains and to maintain flowability in a superior state by dispersedly incorporating specific amounts of long-chain fatty acid into a pulverized metal powder and exerting reduction treatment at specific temp. at the time of applying surface cleaning to the pulverized metal powder by means of reduction treatment with hydrogen. CONSTITUTION:At the time of subjecting a pulverized powder of metal (Cu, Ag, etc.) to reduction treatment with hydrogen to perform surface cleaning, long-chain fatty acid (oleic acid, stearic acid, etc.) or its metallic salt is incorporated, in a dispersed state, into the pulverized metal powder by 0.05-10% and reduction treatment is done at 150-5O0 deg.C. By this method, surface treatment can be performed while effectively inhibiting the coagulation of mutual grains of the pulverized metal powder.

12. 发明专利

JPH03294401A MANUFACTURE OF ALLOY FINE POWDER 失效
公开(公告)号：JPH03294401A
公开(公告)日：1991-12-25
申请号：JP9983590
申请日：1990-04-13
申请人： DAIDO STEEL CO LTD
发明人： TAKAGI SHINOBU , SHIMIZU TAKASUMI , MATSUYAMA MAKOTO
IPC分类号： B22F9/04 , B22F1/00 , H05K9/00
摘要： PURPOSE:To manufacture the above alloy fine powder at a high yield on the raw materials by mixing and alloying mixed metal powders by mechanically stirring and pulverizing the metal mixed powder incorporating at least one set of complete solid solution type metal elements at the specific low temp. or lower. CONSTITUTION:The powders of one set of metals forming the solid solution at any ratio of Ag, Pd, etc., and having = 300 deg.C. Thereafter, the isopropanol is washed with water and removed, and further, the attached moisture is replaced with ethanol-acetone mixed solvent and the perfectly alloyed Ag-Pd alloy powder is easily manufactured.

13. 发明专利

JPS62163946A AIRTIGHTNESS INSPECTION OF CAPSULE 失效
公开(公告)号：JPS62163946A
公开(公告)日：1987-07-20
申请号：JP422186
申请日：1986-01-14
申请人： DAIDO STEEL CO LTD
发明人： MATSUYAMA MAKOTO
IPC分类号： B28B3/00 , B22F3/14 , B22F3/15 , B29C43/58 , B30B5/02 , G01M3/26 , G01M3/32
摘要： PURPOSE:To enable the inspection of airtightness of a capsule simply and with high accuracy, by a method wherein a capsule is housed into a pressure container, then, the internal pressure of a pressure vessel is changed sharply and changes in the internal pressure of the pressure container is detected immediately after this sharp change. CONSTITUTION:A capsule 15 is housed in a pressure container 1, a valve 6 for introducing gases is opened quickly to introduce a high pressure gas in the pressure container 1 and then, the valve 6 is closed. As a result, the internal pressure V of the pressure container 1 is changed sharply from a pressure Va to a specified pressure Vb. Under such a condition, the pressure container is allowed to stand for a fixed time T. When the airtightness is not complete because of a fine hole existing in the capsule 15, the internal pressure V of the pressure container 1 lowers gradually from said Vb. The changes in the internal pressure V of the pressure container 1 are detected with a pressure sensor 10 to be recorded on a recorder 12. Thus, depending on the recorded waveform of the recorder 12, it can be judged whether the capsule 15 is sealed completely airtight or not.

14. 发明专利

JP2005213617A Gas atomizing method and gas atomizing apparatus used in the same 审中-公开
标题翻译：气体原子化方法和气体原子化装置在其中使用
公开(公告)号：JP2005213617A
公开(公告)日：2005-08-11
申请号：JP2004023904
申请日：2004-01-30
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： OKUMURA TEPPEI , MATSUYAMA MAKOTO , KODAMA KENJI , OSUMI TOMOHIKO
IPC分类号： B22F9/08
摘要： PROBLEM TO BE SOLVED: To provide a gas atomizing method by which a molten metal falling in a thin film shape is reliably and efficiently reduced to metal powder, and to provide a gas atomizing apparatus used in the method.
SOLUTION: In the gas atomizing method, a pair of atomizing gases G1 are blown obliquely downward and symmetrically in a thin film shape and in an approximately V shape on both lateral faces of a molten metal M falling in a thin film shape from pouring nozzles, and a pair of shielding gases G2 are made to flow vertically in a thin film shape along both ends of the molten metal M. The length of a major side of the atomizing gas G1 along the horizontal direction of the gas is larger than the length w1 of a major side of the molten metal M along the horizontal direction of the molten metal.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种能够将落入薄膜状的熔融金属可靠且有效地还原成金属粉末的气体雾化方法，并提供该方法中使用的气体雾化装置。解决方案：在气体雾化方法中，一对雾化气体G1以薄膜形状向对称地以约V形形式从熔融金属M的两个侧面以薄膜形式从倾倒喷嘴和一对保护气体G2被制成沿着熔融金属M的两端以薄膜形式垂直流动。雾化气体G1沿着气体的水平方向的长度大于沿着熔融金属的水平方向的熔融金属M的一侧的长度w1。版权所有（C）2005，JPO＆NCIPI

15. 发明专利

JP2004059961A Hydrogen occluding alloy and its producing method 审中-公开
公开(公告)号：JP2004059961A
公开(公告)日：2004-02-26
申请号：JP2002216962
申请日：2002-07-25
申请人： Daido Steel Co Ltd , 大同特殊鋼株式会社
发明人： MAKINO NAOYUKI , MATSUYAMA MAKOTO , KAWAMITSU SHOHEI , SHIMIZU TAKASUMI , YUTO TAKAO
IPC分类号： B22F9/16 , B22F1/00 , C22C1/00 , C22C14/00 , C22C23/00 , H01M8/04
CPC分类号： Y02P70/56
摘要： PROBLEM TO BE SOLVED: To provide a Mg-Ti base hydrogen occluding alloy having the low operation temperature. SOLUTION: A hydrogen occluding alloy is manufactured through the following processes: (1) Ti is powdered and hydrogenated to prepare TiH 2 powder, and this powder is blended with Mg powder; (2)TiH 2 powder and Mg powder are put into a closed-type container, and after the container is evacuated to remove air in a container once, hydrogen gas is put in the container to apply a pressure more than normal pressure; (3) the powder is put into a ball mill together with metal balls, and subjected to mechanical alloying processing in which rotation or vibration is applied under a hydrogen gas atmosphere; (4) the powder subjected to the mechanical alloying processing is put into the closed-type container, and is evacuated once to remove the hydrogen gas in a container; and (5) the atmosphere is gently introduced into the container to reach the normal pressure, so that slow oxidization is proceeded. COPYRIGHT: (C)2004,JPO

16. 发明专利

JP2003113406A GAS ATOMIZATION NOZZLE 审中-公开
公开(公告)号：JP2003113406A
公开(公告)日：2003-04-18
申请号：JP2001309876
申请日：2001-10-05
申请人： DAIDO STEEL CO LTD
发明人： OKOCHI TAKAO , MATSUYAMA MAKOTO , AKIYOSHI TETSUO , KODAMA KENJI , KAWAMITSU SHOHEI
IPC分类号： B22F9/08
摘要： PROBLEM TO BE SOLVED: To provide a gas atomization nozzle which prevents the nozzle from blocking by a molten metal, by preventing blowing-up of the molten metal by jetted gas and microcirculating of a gas stream. SOLUTION: In a gas atomization nozzle which makes the molten metal down from the molten metal nozzle to powders by jetting a high pressure gas to the metal, the atomization nozzle comprises an annular gas exhaust nozzle 11 for jetting the gas downward, which encircles the outer surface of a lower part of the molten metal nozzle 2, and an annular nozzle aperture 21 for jetting the high pressure gas to the molten metal, which is provided around the gas exhaust nozzle 11 and adjacent to an annular gas supply chamber 22.

17. 发明专利

JPH07316694A HYDROGEN STORAGE ALLOY 失效
公开(公告)号：JPH07316694A
公开(公告)日：1995-12-05
申请号：JP11574394
申请日：1994-05-27
申请人： DAIDO STEEL CO LTD
发明人： NAGASE IWANE , SHIMIZU TAKASUMI , MATSUYAMA MAKOTO
IPC分类号： C22C19/00 , H01M4/38
摘要： PURPOSE:To increase discharge capacitance at high rate electric discharge by substituting niobium and boron for respective parts of zirconium and nickel in a hydrogen storage alloy having Laves phase C15 type cubic crystals and containing zirconium and nickel as principal constituent elements. CONSTITUTION:In this hydrogen storage alloy having Laves phase C15 type cubic crystal, reversibly occluding and releasing hydrogen and containing zirconium and nickel as principal component elements, 2-15%, by atomic ratio, of zirconium is substituted by niobium and 3-17% of nickel is substituted by boron. By this procedure, discharge capacitance can be remarkably increased at high rate electric discharge as well as at low rate electric discharge. By this method, the hydrogen storage alloy useful for Ni-secondary battery negative electrode material, etc., can be obtained.

18. 发明专利

JPH06128609A PRODUCTION OF AG-CU ALLOY POWDER 失效
公开(公告)号：JPH06128609A
公开(公告)日：1994-05-10
申请号：JP30313392
申请日：1992-10-15
申请人： DAIDO STEEL CO LTD
发明人： KATO OSAMU , NISHINAKAGAWA TAMOTSU , MATSUYAMA MAKOTO
IPC分类号： B22F1/00 , B22F9/04
摘要： PURPOSE:To stably produce an Ag-Cu alloy powder by grinding a mixture of the Ag powder and Cu powder and then heating the ground mixture in a nonoxidizing atmosphere. CONSTITUTION:The powder of Ag or Ag alloy and the powder of Cu or Cu alloy are mixed in a desired ratio, and one or >=2 kinds of noble metals such as Pt, Pd, Rh, Os and Au are added, as required, and mixed. The admixture is ground by a mechanical means such as a ball mill, heated to 150-600 deg.C in a nonoxidizing atmosphere of Ar, etc., to form a uniform composition of Au and Cu, etc. An Ag-Cu alloy powder excellent in solder erosion resistance is obtained with the noble metal added.

19. 发明专利

JPH03166308A METAL FINE PARTICLES AND MANUFACTURE THEREOF 失效
公开(公告)号：JPH03166308A
公开(公告)日：1991-07-18
申请号：JP15814690
申请日：1990-06-15
申请人： DAIDO STEEL CO LTD
发明人： TAKAGI SHINOBU , SHIMIZU TAKASUMI , MATSUYAMA MAKOTO
IPC分类号： B22F9/20
摘要： PURPOSE:To manufacture metal fine particles for compacting having good electric conductivity and solderability by dispersing metal oxide into organic solvent prepared by dissolving shape improver, heating it and generating crystal agglomeration composed of the specific particle diameter of metal fine particles. CONSTITUTION:In the organic solvent (glyceline, etc.) prepared by dissolving about 10 - 50wt.% the shape improver (citric acid, etc.), ethanol liquid dispersed with metal oxide or metal hydroxide of Cu, Ni, Co, etc., is mixed. This organic solvent is heated at the b.p. or lower for the prescribed time to precipitate the metal particles having 5 - 20mu particle diameter as the crystal agglomeration and this is filtered and washed with water and dried. By this method, the metal fine particles used for film or the compact material maintaining good electric conductivity for a long term and having good solderability, is obtd.

20. 发明专利

JPH02221148A PRODUCTION OF BORON PHOSPHIDE SINTERED BODY 失效
公开(公告)号：JPH02221148A
公开(公告)日：1990-09-04
申请号：JP4163689
申请日：1989-02-23
申请人： DAIDO STEEL CO LTD
发明人： TAKAGI SHINOBU , SHIMIZU TAKASUMI , MATSUYAMA MAKOTO
IPC分类号： C04B35/00
摘要： PURPOSE:To easily obtain a boron phosphide sintered body having high sintering density and useful as a thermoelectric element for high temp. use at a relatively low sintering temp. by adding a specified amt. of fine metal powder to boron phosphite powder before sintering. CONSTITUTION:Fine metal powder is added to boron phosphide powder by 0.5-10wt.%. The metal is selected among the groups IB, IVB and VIII metals such as Cu, Ag, Pd, Si and Mo. The resulting powdery mixture is molded and sintered at 1,000-1,500 deg.C to obtain a boron phosphide sintered body. Since the fine metal powder is added to the hardly sinterable boron phosphide powder, sintering can be carried out at the low temp. and the sintered body has about 80% sintering density.

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