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118 条记录 (耗时 0.014 秒)

    Fluxes for lead-free galvanizing
    51.
    发明授权
    Fluxes for lead-free galvanizing 失效
    无铅镀锌助焊剂

    公开(公告)号：US5437738A

    公开(公告)日：1995-08-01

    申请号：US264133

    申请日：1994-06-21

    申请人： Yum Gerenrot ,  David Leychkis ,  Thomas L. Ranck ,  James L. Griffin ,  Gary Stefanick

    发明人： Yum Gerenrot ,  David Leychkis ,  Thomas L. Ranck ,  James L. Griffin ,  Gary Stefanick

    IPC分类号： B23K35/36 ,  C23C2/02 ,  C23C2/30 ,  B23K35/34

    CPC分类号： C23C2/02 ,  C23C2/30 ,  B23K35/3603

    摘要： The thermal resistance of a zinc chloride/ammonium chloride galvanizing preflux is improved by incorporating therein boric acid, other alkali metal chlorides and an aliphatic amino derivative. An improved zinc chloride/ammonium chloride galvanizing, top-flux includes a deoxidizer such as graphite or charcoal, other alkali metal chlorides and a foaming agent. Both compositions, the preflux and the top-flux, can be used to advantage in galvanizing steel with low lead or no lead zinc.

    摘要翻译： 通过掺入硼酸，其它碱金属氯化物和脂肪族氨基衍生物，可以提高氯化锌/氯化铵镀锌前驱体的耐热性。 改进的氯化锌/氯化铵镀锌，顶部助熔剂包括脱氧剂如石墨或木炭，其它碱金属氯化物和发泡剂。 两种组合物，前流量和顶部助焊剂都可以用于镀锌钢，低铅或不含铅锌。

    Galvanizing fluxes
    52.
    发明授权
    Galvanizing fluxes 失效
    镀锌焊剂

    公开(公告)号：US4911764A

    公开(公告)日：1990-03-27

    申请号：US233131

    申请日：1988-08-17

    申请人： Verdun H. Farnsworth

    发明人： Verdun H. Farnsworth

    IPC分类号： C23C2/30

    CPC分类号： C23C2/30

    摘要： A chloride based galvanizing flux containing at least zinc chloride, ammonium chloride and a rare earth chloride. The rare earth chloride comprises between substantially 500 parts per million and substantially 10% by weight of said flux.

    Method of performing plating of an item having fine parts and a support device therefor
    53.
    发明授权
    Method of performing plating of an item having fine parts and a support device therefor 失效
    对具有精细部件的物品进行电镀的方法及其支撑装置

    公开(公告)号：US4695481A

    公开(公告)日：1987-09-22

    申请号：US845226

    申请日：1986-03-27

    申请人： Yuuji Kawamata ,  Tomohiko Iino ,  Ryoichi Suzuki ,  Noriyuki Haga

    发明人： Yuuji Kawamata ,  Tomohiko Iino ,  Ryoichi Suzuki ,  Noriyuki Haga

    IPC分类号： C23C2/14 ,  B23K1/20 ,  C23C2/26 ,  C23C2/30 ,  C23C2/34 ,  H01L23/50 ,  B05D5/12

    CPC分类号： C23C2/30 ,  C23C2/265

    摘要： A method and device of performing plating of an item having a row of fine parts, e.g. a flatpack IC are disclosed. The method comprises immersing said item in a bath of molten solder, removing said item from said bath while maintaining said item in an attitude such that said row of fine parts is sloped with respect to the surface of said molten solder, and causing flux to exert a fluxing action on said molten solder which adheres to said fine parts, thereby decreasing the surface tension of the solder adhering to said fine parts and preventing bridges of solder from forming between said fine parts.

    摘要翻译： 一种执行具有一排精细部件的物品的电镀的方法和装置，例如， 公开了一种扁平封装IC。 该方法包括将所述物品浸入熔融焊料浴中，从所述浴中除去所述物品，同时将所述物品保持在一定姿态，使得所述一排细小部分相对于所述熔融焊料的表面倾斜，并使助熔剂发挥 对所述熔融焊料的助熔作用粘附到所述细小部分，从而降低粘附到所述细小部分上的焊料的表面张力并防止焊料在所述细小部分之间形成桥。

    Metal coating process
    58.
    发明授权
    Metal coating process 失效

    公开(公告)号：US3695919A

    公开(公告)日：1972-10-03

    申请号：US3695919D

    申请日：1970-11-20

    申请人： ALUMINUM CO OF AMERICA

    发明人： BRONDYKE KENNETH J

    IPC分类号： C23C2/12 ,  C23C2/30 ,  B44D1/34 ,  C23C1/00

    CPC分类号： C23C2/30 ,  C23C2/12

    摘要： A PROCESS FOR ALUMINIZING AN ARTICLE BY IMMERSION IN A VESSEL CONTAINING A BATH OF MOLTEN ALUMINUM. PROVIDING AT LEAST ONE FORAMINOUS REFRACTORY BRICK IMPREGNATED WITH A FLUX MATEIAL HAVING A DENSITY LESS THAN THE MOLTEN ALUMINUM BATH. INTRODUCING THE BRICK INTO THE VESSEL IN CONTACT WITH THE ALUMINUM TO INITIATE DISCHARGE OF THE FLUX FROM THE REFRACTORY BRICK INTO THE ALUMINUM. RETAINING THE BRICK IN THE VESSEL FOR A SUFFICIENTLY LONG PERIOD OF TIME TO ESTABLISH A THIN FILM OF THE FLUX ON THE SURFACE OF THE MOLTEN ALUMINUM. SUBSEQUENTLY INTRODUCING THE ARTICLE TO BE ALUMINIZED INTO THE MOLTEN ALUMINUM AND RETAINING IT THEREIN FOR A PERIOD OF TIME SUFFICIENT TO COAT THE ARTICLE WITH THE MOLTEN ALUMINUM. THEREAFTER REMOVING THE ARTICLE AT A SUFFICIENTLY LOW RATE OF SPEED TO CAUSE FLUX PICKUP TO PROVIDE A FLUX COATING ON THE COATED ARTICLE AND THEREBY MINIMIZING OXIDE FORMATION ON THE COOLED PART. THE FORAMINOUS REFRACTORY BRICK IS PREFERABLY THERMALLY STABLE AT TGHE MOLTEN ALUMINUM BATH TEMPERATURE AND THE FLUX PREFERABLY HAS A MELTING TEMPERATURE NOT LESS THAN THE TEMPERATURE OF THE MOLTEN ALUMINUM BATH.