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171 条记录 (耗时 0.022 秒)

    Method of producing abrasive compacts
    11.
    发明授权
    Method of producing abrasive compacts 失效
    生产磨料压块的方法

    公开(公告)号：US4228942A

    公开(公告)日：1980-10-21

    申请号：US911107

    申请日：1978-05-31

    申请人： Rainer Dietrich

    发明人： Rainer Dietrich

    IPC分类号： B23K20/00 ,  B22F7/06 ,  B23B27/14 ,  B23P15/28 ,  B24D3/00 ,  B24D3/06 ,  B24D18/00 ,  C04B37/02 ,  C22C26/00 ,  B23K1/04

    CPC分类号： C22C26/00 ,  B22F7/06 ,  B22F7/064 ,  B24D18/00

    摘要： A method of bonding a diamond or cubic boron nitride abrasive compact to a second such compact in which a braze alloy layer is deposited on a layer of a transition metal on the first compact, the second compact being then placed on the braze layer and the whole assembly being heated to effect bonding between the first and second compacts.

    摘要翻译： 一种将金刚石或立方氮化硼研磨料结合到第二个这种压块上的方法，其中钎焊合金层沉积在第一压块上的过渡金属层上，然后将第二压块放置在钎焊层上，并将整个 组件被加热以实现第一和第二压块之间的结合。

    Process and alloy for brazing aluminum-containing articles
    13.
    发明授权
    Process and alloy for brazing aluminum-containing articles 失效
    用于钎焊含铝制品的工艺和合金

    公开(公告)号：US4173302A

    公开(公告)日：1979-11-06

    申请号：US836766

    申请日：1977-09-26

    申请人： Werner Schultze ,  Heinz Schoer

    发明人： Werner Schultze ,  Heinz Schoer

    IPC分类号： B23K35/28 ,  B23K1/04

    CPC分类号： B23K35/286 ,  B23K35/282

    摘要： An aluminum-silicon base brazing alloy contains between 4 and 20 percent by weight of silicon and between 0.0001 and 1.0 percent by weight, preferably between 0.005 and 0.1 percent by weight, of at least one of the elements sodium, potassium and lithium. Optionally, the brazing alloy may further include between 0.01 and 10 percent by weight, preferably between 0.05 and 2 percent by weight, of at least one of the elements bismuth, strontium, barium and antimony as well as between 0.00001 and 1.0 percent by weight, preferably between 0.0002 and 0.1 percent by weight, of beryllium. The remainder of the alloy consists essentially of aluminum and impurities conditioned by production of the brazing alloy. The alloy is used for the fluxless brazing of aluminum-containing articles in substantially non-oxidizing atmospheres. The elements sodium, potassium and lithium make it possible to relax the requirements imposed on the brazing atmosphere from those imposed when using similar brazing alloys which, however, do not contain the last-mentioned elements.

    摘要翻译： 铝 - 硅基钎焊合金含有4至20重量％的硅和0.0001至1.0重量％，优选0.005至0.1重量％的至少一种元素钠，钾和锂。 任选地，钎焊合金还可以包含0.01至10重量％，优选0.05至2重量％的元素铋，锶，钡和锑中的至少一种以及0.00001至1.0重量％ 优选0.0002至0.1重量％的铍。 合金的其余部分基本上由铝和通过生产钎焊合金调节的杂质组成。 该合金用于在基本上非氧化性气氛中的含铝制品的无助焊剂。 元素钠，钾和锂使得可以放松对使用类似的钎焊合金施加在钎焊气氛上的要求，但是不包含最后提到的元素。

    Fluxless braze processing of aluminum
    15.
    发明授权
    Fluxless braze processing of aluminum 失效
    无焊钎焊加工铝

    公开(公告)号：US4143802A

    公开(公告)日：1979-03-13

    申请号：US839707

    申请日：1977-10-05

    申请人： Walter L. Winterbottom

    发明人： Walter L. Winterbottom

    IPC分类号： B23K1/19 ,  B23K20/233 ,  B23K1/04

    CPC分类号： B23K20/2336 ,  B23K1/19

    摘要： A method of fluxless brazing of aluminum parts is disclosed. Gaseous species, such as O.sub.2 and H.sub.2 O, which inhibit wetting are controlled by rapid heating (at least 100.degree. C./min) through a critical temperature range (such as 400.degree.-590.degree. C.) during heat-up to brazing temperatures. The formation of porosity through the oxide film and the collection of a promoter and wetting agent at the interface with the oxide film will thus occur simultaneously precluding disruption of wetting action by gaseous O.sub.2 or H.sub.2 O. Wicking of the wetting agent through the film porosity in the critical temperature range will then take place because of the limited time available for the reaction of gaseous O.sub.2 and H.sub.2 O with the film to form a duplex oxide. Heating may be carried out in a vacuum of 10.sup.-3 Torr or less or in an inert atmosphere with pulsed heating, provided the critical heating rate is observed in said critical temperature range.

    摘要翻译： 公开了一种铝部件无助焊钎焊的方法。 通过在加热至钎焊温度期间通过临界温度范围（例如400°-590℃）的快速加热（至少100℃/分钟）来控制抑制润湿的气态物质，例如O 2和H 2 O. 。 因此，通过氧化膜的孔隙率的形成以及与氧化物膜的界面处的促进剂和润湿剂的收集将同时排除由气态O 2或H 2 O破坏润湿作用。 因此，在临界温度范围内通过薄膜孔隙率润湿剂的芯吸将会发生，因为气体O 2和H 2 O与薄膜反应形成双相氧化物可用的时间有限。 只要在所述临界温度范围内观察到临界加热速率，加热可以在10-3乇或更小的真空中或在惰性气氛中进行脉冲加热。

    Pre-blistering of braze joints
    16.
    发明授权
    Pre-blistering of braze joints 失效
    钎焊接头预起泡

    公开(公告)号：US4076164A

    公开(公告)日：1978-02-28

    申请号：US789495

    申请日：1977-04-21

    申请人： Ivan Gene Freshcorn

    发明人： Ivan Gene Freshcorn

    IPC分类号： B23K1/00 ,  B23K31/00 ,  B23K1/04

    CPC分类号： B23K1/0008

    摘要： A method, in the art of brazing metallic parts to one another, including a step of subjecting a brazed assembly to relatively high temperatures over a relatively short period of time in a manner to induce blistering of unbrazed or weakly brazed areas. Blistered material can then be removed, leaving a soundly brazed structure which in use will not fragment and give up loose materials to ambient surroundings.

    摘要翻译： 在金属部件彼此钎焊的领域中的方法包括在相当短的时间内以钎焊组件相对高温度的方式，以诱发无刷或弱钎焊区域的起泡的方法。 然后可以去除潮湿的材料，留下坚固的钎焊结构，其在使用中将不会碎裂并放弃松散的材料到周围环境。

    Method of manufacturing a heat exchanger core
    18.
    发明授权
    Method of manufacturing a heat exchanger core 失效
    制造热交换器芯的方法

    公开(公告)号：US3973718A

    公开(公告)日：1976-08-10

    申请号：US516021

    申请日：1974-10-18

    申请人： Nicholas H. Deschamps

    发明人： Nicholas H. Deschamps

    IPC分类号： B23K1/00 ,  B23K35/02 ,  F28F13/00 ,  B23K1/04

    CPC分类号： B23K35/0244 ,  B23K1/0012 ,  F28F13/003 ,  Y10S165/907 ,  Y10T29/4935

    摘要： A heat exchanger core includes a communicating set of metallic tubular elements, preferably aluminum, for carrying a primary fluid and a matrix of rounded metallic elements. The matrix elements are metallurgically bonded to one another and to the tubular elements. This arrangement of the matrix creates a multiplicity of communicating interstices which serve as passageways for the secondary fluid. The surface of the rounded elements constitutes the major area exposed to the secondary fluid flow. The rounded elements are metallurgically bonded by preferably a brazing technique. Relatively small particles of low melting temperature alloy, preferably aluminum, are dispersed throughout a stacked arrangement of relatively larger rounded elements, preferably of aluminum of a higher melting temperature. In one brazing method, an assembly of tubes, large rounded elements and smaller particles are brazed in a vacuum brazing oven. At the temperature of the oven, the smaller particles melt but the larger elements do not. Still another material, previously added, also melts and reacts with any oxide film present on the larger elements allowing the welded aluminum to fuse to these elements and to the tubes.

    摘要翻译： 热交换器芯包括用于承载初级流体和圆形金属元素基体的金属管状元件（优选铝）的连通组。 基体元件彼此冶金结合并连接至管状元件。 矩阵的这种布置产生多个通信空隙，其用作次流体的通道。 圆形元件的表面构成暴露于次级流体流动的主要区域。 圆形元件优选地通过钎焊技术进行冶金结合。 低熔点合金（优选铝）的相对较小的颗粒分散在相对较大的圆形元件，优选具有较高熔融温度的铝的堆叠布置中。 在一种钎焊方法中，在真空钎焊炉中钎焊管，大圆形元件和较小颗粒的组件。 在烤箱的温度下，较小的颗粒熔化，但较大的元素不会熔化。 先前添加的另一种材料也与存在于较大元件上的任何氧化膜熔融并反应，允许焊接的铝熔合到这些元件和管。

    Vacuum brazing process
    20.
    发明授权
    Vacuum brazing process 失效
    真空钎焊工艺

    公开(公告)号：US3917151A

    公开(公告)日：1975-11-04

    申请号：US53649474

    申请日：1974-12-26

    申请人： KAISER ALUMINIUM CHEM CORP

    发明人： ROBINSON IVAN B

    IPC分类号： B23K35/00 ,  B23K35/28 ,  B23K1/04

    CPC分类号： C22C21/02 ,  B23K35/002 ,  B23K35/286 ,  B32B15/016 ,  C22C21/00

    摘要： This invention relates to an improved magnesium source for the vacuum brazing of aluminum members, the source comprising a magnesium-containing member clad with a magnesium-free aluminum alloy. The cladding effectively prevents the premature vaporization of the magnesium during vacuum brazing operations and also prevents the formation of a complex magnesium-containing oxide film on the magnesium source.

    摘要翻译： 本发明涉及一种用于铝构件的真空钎焊的改进的镁源，该源包括含无镁铝合金的含镁构件。 包层有效地防止了镁在真空钎焊过程中的过早蒸发，并且还防止了在镁源上形成复合的含镁氧化物膜。