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    • 1. 发明授权
    • Process for manufacturing composite powder for powder metallurgy
    • 粉末冶金复合粉末制造工艺
    • US4174211A
    • 1979-11-13
    • US894336
    • 1978-04-07
    • Taizo OhmuraNoboru YonezawaKazuo Ikuta
    • Taizo OhmuraNoboru YonezawaKazuo Ikuta
    • B22F1/00B22F1/02B22F9/06B22F9/00
    • B22F1/02B22F9/06
    • A core metal in a molten state, which is to be pulverized, is put in a vessel in coexistence with a covering powder in a solid state consisting of a material which has a higher melting point than said core metal and is difficult to chemically react with said core metal and/or difficult to form a solid solution with said core metal. Then, said molten core metal and said solid covering powder are mixed thoroughly and uniformly by stirring. Then, while continuing said stirring, said molten core metal and said solid covering powder are slowly cooled until the temperature of the former reaches at least its solidus point to pulverize said core metal into a fine powder and to form a composite powder for powder metallurgy having a structure in which many particles of said covering powder adhere to and cover the entire surface of each particle of said fine powder of said core metal.
    • 将待粉碎的熔融状态的芯状金属与固体状态的覆盖粉末共存,由具有比所述核心金属更高的熔点的材料组成并难以与 所述芯金属和/或难以与所述芯金属形成固溶体。 然后,通过搅拌将所述熔融的芯金属和所述固体覆盖粉末充分均匀地混合。 然后,在继续搅拌的同时,将所述熔融芯金属和所述固体覆盖粉末缓慢冷却至所述熔融芯金属和所述固体覆盖粉末直到其至少达到其固相点为止,将所述芯金属粉碎成细粉末,并形成粉末冶金用复合粉末, 其中所述覆盖粉末的许多颗粒粘附并覆盖所述芯金属的所述细粉末的每个颗粒的整个表面的结构。
    • 2. 发明授权
    • Process for manufacturing fine powder of metal
    • 制造金属细粉的工艺
    • US4202686A
    • 1980-05-13
    • US857886
    • 1977-12-06
    • Taizo OhmuraNoboru YonezawaKazuo Ikuta
    • Taizo OhmuraNoboru YonezawaKazuo Ikuta
    • B22F9/06B22F1/02
    • B22F9/06
    • A metal in a molten state, which is to be pulverized, is put in a vessel in coexistence with an assistant-powder consisting of a material which has a higher melting point than said metal and is difficult to chemically react with said metal and/or difficult to form a solid solution with said metal. Then, said molten metal and said assistant-powder are mixed thoroughly by stirring. Then, while continuing said stirring, said molten metal and said assistant-powder are slowly cooled until the temperature of the former reaches at least its solidus point to pulverize said metal into a fine powder and to form a composite powder having a structure in which said assistant-powder adheres to said fine powder to cover the entire surface of each particle of said fine powder. And then, said assistant-powder is separated and removed from said composite powder, thereby obtaining a fine powder of said metal.
    • 将待粉碎的熔融状态的金属与由与所述金属熔点较高的材料组成的辅助粉末共存而难以与所述金属和/或 难以与所述金属形成固溶体。 然后,通过搅拌将所述熔融金属和所述辅助粉末充分混合。 然后,在继续搅拌的同时,将所述熔融金属和所述辅助粉末缓慢冷却直到所述熔融金属至少达到其固相点,将所述金属粉碎成细粉末并形成复合粉末,其结构为所述 辅助粉末粘附到所述细粉末以覆盖所述细粉末的每个颗粒的整个表面。 然后,将所述辅助粉末从所述复合粉末中分离除去,从而得到所述金属的细粉末。
    • 5. 发明授权
    • Method for producing secondary battery
    • 二次电池的制造方法
    • US09157964B2
    • 2015-10-13
    • US13497257
    • 2009-09-24
    • Shinichiro KitsunaiKazuo IkutaNorihiro Jikuri
    • Shinichiro KitsunaiKazuo IkutaNorihiro Jikuri
    • G01N27/416G01R31/36H01M10/052H01M10/42G01R31/02
    • G01R31/3627G01R31/025H01M10/052H01M10/4207Y02E60/122Y02P70/54
    • Disclosed is method for producing a secondary battery, capable of selection of a secondary battery having a defect caused by a micro short-circuit with high accuracy. A step for producing a secondary battery includes an inspection step for selecting the secondary battery having the defect among multiple secondary batteries. In the inspection step, a short circuit resistance is calculated based on capacitances of the multiple secondary batteries calculated before self-discharge inspection, a time required for the self-discharge inspection, first and second reference voltages calculated from open circuit voltages measured before and after the self-discharge inspection in the multiple secondary batteries, and first and second voltages which are open circuit voltages of one selected from the multiple secondary batteries measured before and after the self-discharge inspection. If the short circuit resistance is equal to or lower than a predetermined standard value, the selected secondary battery is determined to have the defect.
    • 公开了一种二次电池的制造方法,其能够高精度地选择具有由微型短路引起的缺陷的二次电池。 用于制造二次电池的步骤包括用于在多个二次电池中选择具有缺陷的二次电池的检查步骤。 在检查步骤中,基于在自放电检查之前计算的多个二次电池的电容,自放电检查所需的时间,由前后测量的开路电压计算出的第一和第二参考电压来计算短路电阻 多次二次电池中的自放电检查,以及在自放电检查之前和之后测量的多个二次电池中选择的开路电压的第一和第二电压。 如果短路电阻等于或低于预定标准值,则确定所选择的二次电池具有缺陷。