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15 条记录 (耗时 0.034 秒)

    Method for preparing acrolein or methacrolein
    2.
    发明授权
    Method for preparing acrolein or methacrolein 失效
    制备丙烯酸或甲基纤维素的方法

    公开(公告)号：US5144090A

    公开(公告)日：1992-09-01

    申请号：US711032

    申请日：1991-06-06

    申请人： Tadatoshi Honda ,  Tokio Nagayama ,  Nobuhiko Horiuchi ,  Jun Kitagawa ,  Kazunori Kawahara ,  Masami Murakami

    发明人： Tadatoshi Honda ,  Tokio Nagayama ,  Nobuhiko Horiuchi ,  Jun Kitagawa ,  Kazunori Kawahara ,  Masami Murakami

    IPC分类号： B01J23/88 ,  C07C45/35 ,  C07C45/37 ,  C07C45/39

    CPC分类号： B01J23/887 ,  B01J23/002 ,  C07C45/35 ,  C07C45/37 ,  C07C45/39 ,  B01J2523/00

    摘要： A method for preparing acrolein or methacrolein comprises subjecting propylene, secondary propanol, isobutylene or tertiary butanol to gas phase catalytic oxidation with molecular oxygen in the presence of a catalyst represented by the following general formula (I):Mo.sub.a Bi.sub.b Fe.sub.c X.sub.d Y.sub.O Z.sub.f O.sub.g (I)wherein X represents at least one element selected from the group consisting of Ni and Co; Y represents at least one element selected from the group consisting of K, Rb, Cs and Tl; and Z represents at least one element selected from the group consisting of Be, Mg, Ca, Sr, Ba, Ce, Ti, Zr, Nb, Cr, W, Mn, Cu, Ag, Zn, Cd, B, Al, Si, Ge, Sn, Pb, P, As, Sb, S, Se and Te; a, b, c, d, e, f and g each represents an atomic ratio of the corresponding element and when a is assumed to be 12, b=0.1.about.10, c=0.1.about.20, d=2.about.20, e=0.01.about.2, f=0.about.4 and g represents the number of oxygen atoms required for satisfying the valency requirement of the constituent elements, wherein the catalyst used is prepared by separately preparing solutions each of which contains the starting compound for the foregoing catalyst components, mixing these solutions within a short period of time, spray-drying the resulting mixture immediately after the mixing and then calcining the dried powder. A catalyst which further comprises 5 to 15% by weight of silica in addition to the foregoing composition is also used in the method. End products can be obtained in high conversion and selectivity through the use of the foregoing catalyst. Moreover, the catalyst is excellent in stability and has good reproducibility.

    PLASMA WELDING TORCH, AND WELDING METHOD USING PLASMA WELDING TORCH
    7.
    发明申请
    PLASMA WELDING TORCH, AND WELDING METHOD USING PLASMA WELDING TORCH 失效
    等离子焊接机，以及使用等离子焊接焊机的焊接方法

    公开(公告)号：US20110210102A1

    公开(公告)日：2011-09-01

    申请号：US13026558

    申请日：2011-02-14

    申请人： Katsuya Matsumoto ,  Jun Kitagawa ,  Keishi Setoda ,  Yusuke Muramatsu

    发明人： Katsuya Matsumoto ,  Jun Kitagawa ,  Keishi Setoda ,  Yusuke Muramatsu

    IPC分类号： B23K10/02

    CPC分类号： B23K10/02 ,  H05H1/341 ,  H05H2001/3421

    摘要： A plasma welding torch that can be reduced in size more than in conventional cases. When an inert gas G such as argon gas is supplied to an outer circumferential space around a non-consumable electrode 13, a portion of the inert gas G is used as plasma gas GP that forms a plasma arc PA between the non-consumable electrode 13 and a base material 2 via a plasma orifice 51. A plasma welding torch 1 moves, maintaining this state, in the direction of the arrow shown in FIG. 4. Meanwhile, a portion of the inert gas G supplied to a gas flowing part 21 is not used as the plasma gas GP but is used as shielding gas GS and is ejected onto the base material 2 ahead in the welding direction via a shielding orifice 52. The welding on the base material 2 is performed in a state where the plasma arc PA and the base material 2 are shielded from the air by this shielding gas.

    摘要翻译： 一种等离子焊枪，其尺寸可以比常规情况下减小。 当诸如氩气的惰性气体G被供应到非消耗性电极13周围的外周空间时，惰性气体G的一部分被用作在非消耗性电极13之间形成等离子弧PA的等离子体气体GP 和等离子体喷嘴51的基材2.等离子体焊炬1沿图1所示的箭头方向移动，保持该状态。 同时，供给到气体流通部21的惰性气体G的一部分不用作等离子体气体GP，而被用作保护气体GS，并且通过屏蔽孔向焊接方向前方喷射到基材2上 在等离子弧PA和基材2被该保护气体与空气隔离的状态下，对基材2进行焊接。

    Method of and apparatus for manufacturing joined body
    9.
    发明申请
    Method of and apparatus for manufacturing joined body 审中-公开
    制造接合体的方法和装置

    公开(公告)号：US20070023158A1

    公开(公告)日：2007-02-01

    申请号：US11495758

    申请日：2006-07-31

    申请人： Toshihiro Murakawa ,  Jun Kitagawa ,  Akira Goto ,  Masamitsu Numano

    发明人： Toshihiro Murakawa ,  Jun Kitagawa ,  Akira Goto ,  Masamitsu Numano

    IPC分类号： B22D19/04

    CPC分类号： B22D19/00

    摘要： Electrodes are embedded respectively in a first die and a second die. A metal workpiece is placed in a cavity defined between the first die and the second die which mate with each other. Then, a molten metal is poured through a passage into the cavity. The molten metal is solidified into a casting, forming a contact region of the metal workpiece and the casting. Thereafter, an electric current is supplied from a power supply between the electrodes across the contact region. The supplied electric current breaks an oxide film that is present on the surface of the metal workpiece, and joins the metal workpiece and the casting in the contact region.

    摘要翻译： 电极分别嵌入第一模具和第二模具中。 将金属工件放置在限定在第一管芯和第二管芯之间的空腔中，所述腔体彼此配合。 然后，将熔融金属通过通道注入空腔。 熔融金属固化成铸件，形成金属工件和铸件的接触区域。 此后，从电极之间的电源向接触区域提供电流。 所提供的电流破坏存在于金属工件的表面上的氧化膜，并将金属工件和铸件接合在接触区域中。