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    • 3. 发明授权
    • Process for purifying silica
    • 二氧化硅纯化方法
    • US4676964A
    • 1987-06-30
    • US857376
    • 1986-04-30
    • Akira SekiYuuki NaritaYoshio AsoShunro Nagata
    • Akira SekiYuuki NaritaYoshio AsoShunro Nagata
    • C01B33/158C01B33/12
    • C01B33/158
    • This invention concerns a process for purifying silica produced from an alkali silicate aqueous solution, which usually contains more than 200 ppm of impurities, to silica containing less than 30 ppm of impurities. Concretely, the purification process of silica comprises: dispersing silica gel, containing a lot of impurities, in water and filtering the solution; dispersing the filtered out silica gel again in an aqueous solution of pH 2 or less and filtering the aqueous solution; putting the silica gel to heat-treatment and acid-treatment with continuous stirring in order to break the inside siloxane link and dissolve out impurities therefrom and filtering the acid solution; rinsing a produced cake with pure water to wash away the inside residual solution and drying the cake.
    • 本发明涉及一种将通常含有大于200ppm杂质的碱金属硅酸盐水溶液生产的二氧化硅纯化成含有少于30ppm杂质的二氧化硅的方法。 具体地说,二氧化硅的纯化方法包括:将含有大量杂质的硅胶分散在水中并过滤溶液; 将滤出的硅胶再次分散在pH2以下的水溶液中,过滤水溶液; 将硅胶在连续搅拌下进行热处理和酸处理,以破坏内部硅氧烷连接并溶解杂质并过滤酸溶液; 用纯水冲洗生产的滤饼以洗涤内部残留溶液并干燥滤饼。
    • 4. 发明申请
    • Source blank for stainless steel three-ply clad sheet, production methods of clad steel plate and sheet for solid polymer type fuel cell separator, and solid polymer type fuel cell separator
    • 不锈钢三层包覆板坯,固体聚合物型燃料电池隔板复合钢板和板材的生产方法,固体聚合物型燃料电池隔板
    • US20080220308A1
    • 2008-09-11
    • US12076197
    • 2008-03-14
    • Motomichi KanbeKunihiko UshioTakeo YazawaHideaki YamamotoYoshio TarutaniAkira Seki
    • Motomichi KanbeKunihiko UshioTakeo YazawaHideaki YamamotoYoshio TarutaniAkira Seki
    • B32B15/18H01M8/10B23K31/02
    • B21B3/02B23K15/0053B23K20/04B23K2101/18B23K2101/34B23K2103/05B23K2103/18C22C38/44C22C38/54H01M8/021H01M8/0223H01M2008/1095Y02P70/56Y10S228/901Y10T428/12653Y10T428/12965
    • Provided is a first method for producing a source blank for a clad steel sheet composed of a stainless steel containing 0 to 0.3% B as a core component and a stainless steel containing 0.3 to 2.5% B as face components, the face components each being combined with each of major faces of the core component through the following steps and the like: Step 1: disposing, on side end faces of each face component, protectors with a length greater than a length of the side end faces, disposing tabs each in abutting relation with an extension of the protector's face to abut on the side end face of the face component, and performing bonding between the tabs and the protectors and between the face component and the protectors; Step 2: each composite, which is obtained by removing the tabs and extended portions of the protectors bonded with the tabs from the workpiece after Step 1, is piled on either major face of the core component to thereby obtain a combined block; and Step 3: performing bonding at boundary regions on peripheral four side end faces of the combined block. Further, there is provided a second method for producing a stainless steel three-ply clad sheet for a fuel cell separator, comprising heating the source blank produced by the first method and then performing rough rolling, hot rolling and cold rolling thereto, whereby the clad steel sheet for the fuel cell separator or a solid polymer type fuel cell separator thereby is obtained. According to this, a source blank for a stainless steel three-ply clad sheet and a separator steel sheet, including B-containing steel as a face layer, which are most suitably used as a solid polymer type fuel cell separator can be provided.
    • 本发明提供一种由含有0〜0.3%B作为核心成分的不锈钢和含有0.3〜2.5%B作为面部成分的不锈钢构成的复合钢板的原料坯的第一种方法,所述面部成分各自组合 通过以下步骤等使芯部件的每个主面:步骤1:在每个面部部件的侧端面上设置长度大于侧端面长度的保护件,将突出部分设置成邻接 与保护器的表面的延伸部的关系抵接在面部部件的侧端面上,并且进行接头和保护件之间以及面部部件和保护件之间的接合; 步骤2:通过将在步骤1之后从工件接合的保护器的突片和延伸部分移除而获得的每个复合物堆叠在芯部件的主面上,从而获得组合块; 和步骤3:在组合块的周边四个侧端面上的边界区域执行结合。 此外,提供了一种用于制造用于燃料电池隔板的不锈钢三层包覆板的第二种方法,包括加热通过第一种方法制造的源坯料,然后进行粗轧,热轧和冷轧,由此包层 得到燃料电池用隔板用钢板或固体聚合物型燃料电池隔板。 据此,可以提供最适合用作固体聚合物型燃料电池隔板的不锈钢三层包覆板和含有B层钢作为面层的隔板钢板的坯料。
    • 8. 发明授权
    • Method of integrally attaching hollow member to cast product by casting
and apparatus therefor
    • 通过铸造将中空构件一体地安装到铸造产品上的方法及其装置
    • US5957190A
    • 1999-09-28
    • US922341
    • 1997-09-03
    • Hisaya MorishitaAkira SekiShigeki TamuraMitsuru Inui
    • Hisaya MorishitaAkira SekiShigeki TamuraMitsuru Inui
    • B22D17/22B22D19/00
    • B22D19/0072
    • In a method of integrally attaching a hollow member to a cast product by casting so that the hollow member communicates with a hollow interior of the cast product, a closure member is fitted into an open end of the hollow member so that the open end of the hollow member is closed by the closure member. The closure member projects from a core for forming the hollow interior of the cast product in a direction different from a direction in which the core is drawn out of the cast product. A molten metal is poured into a casting mold after the casting mold has been clamped. The closure member is moved inside the core after solidification of the molten metal so that the closure member is released from the fitting in the hollow member. The core is drawn out of the solidified metal subsequently to the moving step of the closure member.
    • 在通过铸造将中空构件整体地附接到铸造产品的方法中,使得中空构件与铸造产品的中空内部连通,将封闭构件装配到中空构件的开口端中,使得开口端 中空构件被封闭构件封闭。 封闭构件从用于形成铸造产品的中空内部的芯部沿与芯从铸造产品中拉出的方向不同的方向突出。 在铸模被夹紧后,将熔融金属倒入铸模中。 在熔融金属凝固之后,封闭构件在芯内移动,使得封闭构件从中空构件中的配件释放。 随后在封闭构件的移动步骤之后,将芯体从固化的金属中拉出。
    • 9. 发明授权
    • Violation control circuit in ISDN
    • ISDN中的违规控制电路
    • US5206883A
    • 1993-04-27
    • US637215
    • 1991-01-03
    • Akira Seki
    • Akira Seki
    • H04J3/06H04J3/00H04L7/08H04L25/08
    • H04L25/08
    • The present invention discloses a violation control circuit for a frame alignment of a basic interface in ISDN. The violation control circuit comprises selectors having inputs connected to positive and negative pulse transmission signals, a selector control circuit for providing control signals for selectively connect the inputs of the selectors to outputs of the selectors. The violation control circuit further comprises a U-B converter for receiving the outputs of the selectors, a transmission transformer for receiving an outut of the U-B converter, a receiving transformer for receiving a receiving pulse, a B-U converter for receiving an output of the receiving transformer, and an INFO detecting circuit to be connected to an output of the B-U converter.
    • 本发明公开了一种用于ISDN中的基本接口的帧对准的违规控制电路。 违规控制电路包括具有连接到正和负脉冲传输信号的输入的选择器,选择器控制电路,用于提供用于选择性地将选择器的输入连接到选择器的输出的控制信号。 违规控制电路还包括用于接收选择器的输出的UB转换器,用于接收UB转换器的输出的发送变压器,用于接收接收脉冲的接收变压器,用于接收接收变压器的输出的BU转换器, 以及INFO检测电路,连接到BU转换器的输出端。