Non-clogging powder injector for a kinetic spray nozzle system
    1.
    发明申请
    Non-clogging powder injector for a kinetic spray nozzle system 审中-公开
    不堵塞粉末注射器用于动力喷嘴系统

    公开(公告)号:US20070074656A1

    公开(公告)日:2007-04-05

    申请号:US11243467

    申请日:2005-10-04

    IPC分类号: B05C19/00

    CPC分类号: C23C24/04 B05B7/1486

    摘要: An improved kinetic spray nozzle system design is disclosed. The nozzle includes an improved powder injector having an injector tube and a sleeve wherein the injector tube is received in the sleeve and secured to the sleeve. The powder injector further includes an air gap defined between an inner diameter of the sleeve and an outer diameter of the injector tube wherein the air gap is from 50 to 200 microns. The improved injector is capable of spraying a variety of powder materials including hard and “gummy” powders for without clogging for extended periods of time whereas under similar spray conditions previous designs became completely plugged within minutes. The improved injector design enabled the use of higher main gas temperatures to achieve improved coating formation and deposition efficiencies. Most importantly, the improved design makes it possible to use the kinetic spray system with a wide range of powder materials in a manufacturing setting without interruptions caused by powder injector clogging related problems.

    摘要翻译: 公开了改进的动力喷嘴系统设计。 喷嘴包括具有喷射器管和套筒的改进的粉末喷射器,其中喷射器管被容纳在套筒中并固定到套筒上。 粉末喷射器还包括限定在套筒的内径和喷射器管的外径之间的空气间隙,其中气隙为50至200微米。 改进的注射器能够喷涂各种粉末材料,包括硬和“粘性”粉末,以免长时间堵塞,而在类似的喷雾条件下,以前的设计在几分钟内完全堵塞。 改进的喷射器设计使得能够使用更高的主气体温度来实现改进的涂层形成和沉积效率。 最重要的是,改进的设计使得可以在制造设置中使用具有各种粉末材料的动力喷雾系统,而不会由于粉末喷射器堵塞相关问题而中断。

    Kinetic spray deposition of flux and braze alloy composite particles
    2.
    发明申请
    Kinetic spray deposition of flux and braze alloy composite particles 审中-公开
    焊剂和钎焊合金复合颗粒的动力喷雾沉积

    公开(公告)号:US20070029370A1

    公开(公告)日:2007-02-08

    申请号:US11198981

    申请日:2005-08-08

    IPC分类号: B23K35/12 B23K31/02

    CPC分类号: B23K3/0638 B23K2103/10

    摘要: The present invention is directed to a process for preparing substrates, such as aluminum and aluminum alloy surfaces in heat exchangers, for brazing by depositing thereon a kinetic sprayed brazing composition. The process simultaneously deposits composite particles that include all braze materials, i.e., both filler alloy and brazing flux, and corrosion protection materials used in the brazing of aluminum fins to plates and tubes in a single stage.

    摘要翻译: 本发明涉及一种在热交换器中制备诸如铝和铝合金表面的基材的方法,用于通过在其上沉积动力学喷涂的钎焊组合物进行钎焊。 该方法同时沉积包括所有钎焊材料,即填料合金和钎焊焊剂的复合材料颗粒,以及用于在单个阶段将铝翅片钎焊到板和管的腐蚀保护材料。