Method and apparatus for fluxless solder bonding
    3.
    发明授权
    Method and apparatus for fluxless solder bonding 失效
    无焊剂焊接方法和装置

    公开(公告)号:US5205461A

    公开(公告)日:1993-04-27

    申请号:US524408

    申请日:1990-05-16

    IPC分类号: B23K1/012 H01L21/00 H05K3/34

    摘要: Method and apparatus for fluxlessly solder bonding a solder mound to a solder wettable surface. A heated gas, preferably a reducing or non-reactive gas, is directed at a solid solder mound. Gas is heated to a temperature sufficient to melt solder mound. The heated gas is directed at the molten solder mound at a momentum sufficient to disperse an oxide layer at the surface of the molten solder mound. Dispersing the oxide layer permits the molten solder to wet the solder wettable surface. The molten solder is cooled to form a solder bond.

    摘要翻译: 将焊锡焊料无焊焊接到焊料可润湿表面的方法和装置。 加热气体,优选还原性或非反应性气体,被引导到固体焊料堆。 将气体加热到足以熔化焊料堆的温度。 加热的气体以足以将氧化物层分散在熔融焊料堆的表面的动量指向熔融焊料堆。 分散氧化物层允许熔融焊料润湿焊料可润湿表面。 将熔融的焊料冷却以形成焊料接合。

    Solder application system using helix to control solder meniscus
    7.
    发明授权
    Solder application system using helix to control solder meniscus 失效
    焊接应用系统采用螺旋线控制焊料半月板

    公开(公告)号:US5446261A

    公开(公告)日:1995-08-29

    申请号:US148451

    申请日:1993-10-26

    IPC分类号: B23K3/03 H05B3/42

    CPC分类号: B23K3/03

    摘要: A soldering tip overcomes the gravitational effects on molten solder and supplies a large molten solder sphere for contact with a surface to which solder is to be applied. A conical or cylindrical spiral or helix of solder-wettable material, preferably in the form of a compressional spring is attached to the soldering tip with the central axis of the helix aligned with the axis of the soldering tip, preferably by welding. Solder supplied to the soldering tip flows between the coils of the helix and forms a meniscus at the lower end of the helix so that only the molten solder meniscus touches the surface during application of solder. The increased surface tension acts to overcome gravitational effects and assures a more even flow of solder to the surface.

    摘要翻译: 焊接头克服了对熔融焊料的重力影响,并提供了一个大的熔融焊球,用于与要施加焊料的表面接触。 焊料可润湿材料的圆锥形或圆柱形螺旋或螺旋,优选为压缩弹簧形式,优选通过焊接,将螺旋的中心轴线与烙铁头的轴线对准,从而将烙铁头连接到烙铁头。 提供给焊接头的焊料在螺旋线圈之间流动,并在螺旋的下端形成弯液面,使得在施加焊料期间仅熔融的焊料弯月面接触表面。 增加的表面张力起到克服重力作用的作用,并确保焊料更均匀地流向表面。