Gas diffusing laminated steel sandwich panels
    1.
    发明申请
    Gas diffusing laminated steel sandwich panels 审中-公开
    气体扩散层压钢夹芯板

    公开(公告)号:US20080081149A1

    公开(公告)日:2008-04-03

    申请号:US11536037

    申请日:2006-09-28

    IPC分类号: B32B3/10 B32B3/00

    摘要: Laminated steel panels which are subjected to forming and assembly operations such as welding that subject the composite construction to high temperatures in localized regions. The metal laminate structure has metal skins sandwiching one or more layers of polymeric material. The polymeric material incorporates cavity structures which are designed to accommodate the gaseous components liberated during welding and other high temperature processes.

    摘要翻译: 经受诸如焊接的成形和组装操作的层压钢板,其将复合结构承受在局部区域中的高温。 金属层压结构具有夹着一层或多层聚合物材料的金属表层。 聚合物材料包括腔结构,其被设计成容纳在焊接和其它高温过程期间释放的气体组分。

    FRICTION STIR WELDING OF DISSIMILAR METALS
    6.
    发明申请
    FRICTION STIR WELDING OF DISSIMILAR METALS 审中-公开
    异种金属的摩擦焊接

    公开(公告)号:US20100089977A1

    公开(公告)日:2010-04-15

    申请号:US12250750

    申请日:2008-10-14

    IPC分类号: B23K20/12

    摘要: When a friction stir weld tool penetrates the interface of two workpieces of dissimilar metal alloy materials, the resultant weld of the different alloy materials may produce a weak weld joint. Such weak joints are often experienced, for example, when attempting to form spot welds or other friction stir welds between a magnesium alloy sheet or strip and an aluminum alloy sheet or strip. It is discovered that suitable coating compositions placed at the interface of assembled workpieces can alter the composition of the friction stir weld material and strengthen the resulting bond. In the example of friction stir welds between magnesium alloy and aluminum alloy workpieces, it is found that combinations of copper, tin, and zinc, and other powders can strengthen the magnesium-containing and aluminum-containing friction stir weld material.

    摘要翻译: 当摩擦搅拌焊接工具穿过异种金属合金材料的两个工件的界面时,不同合金材料的合金焊缝可能产生较弱的焊接接头。 例如,当试图在镁合金板或带与铝合金板或带之间形成点焊或其它摩擦搅拌焊接时,经常遇到这种弱接头。 发现放置在组装工件的界面处的合适的涂料组合物可以改变摩擦搅拌焊料的组成并加强所得粘结。 在镁合金和铝合金工件之间的摩擦搅拌焊接的实例中,发现铜,锡和锌等粉末的组合可以加强含镁和含铝的摩擦搅拌焊接材料。

    Method and System for Welding Workpieces
    7.
    发明申请
    Method and System for Welding Workpieces 有权
    焊接工件的方法和系统

    公开(公告)号:US20090277880A1

    公开(公告)日:2009-11-12

    申请号:US12116381

    申请日:2008-05-07

    IPC分类号: B23K11/24

    摘要: A method of welding two or more workpieces employing a motion-controlled electrode that reduces temperature and residual stresses at a workpiece-to-electrode interface is disclosed. During a first period of time, a first electrode force is applied to the workpieces to be welded, and a weld current is applied that causes heating of an associated workpiece-to-workpiece faying surface, the first electrode force being applied at a first electrode stroke. A temperature of the faying surface indicative of a weld nugget formation thereat is determined, and in response thereto the electrode force is reduced to a second level during a second period of time while maintaining a constant electrode stroke. During a third period of time, the electrode force is further reduced to a third level while simultaneously reducing the electrode stroke to a second level. Welding is stopped after the third period of time, resulting in a weld joint having reduced residual stresses and reduced likelihood of stress crack formation.

    摘要翻译: 公开了一种焊接两个或更多个工件的方法,该工件采用运动控制的电极来降低工件对电极界面的温度和残余应力。 在第一时间段期间,第一电极力被施加到待焊接的工件上,并且施加焊接电流,其引起相关联的工件对工件接合表面的加热,第一电极力施加在第一电极 行程。 确定表示焊接熔核形成的接合表面的温度,并且响应于此,电极力在第二时间段期间降低到第二水平,同时保持恒定的电极行程。 在第三时间段期间,电极力进一步降低到第三水平,同时将电极行程降低到第二水平。 焊接在第三个时间段之后停止,导致焊接接头具有减小的残余应力并减少应力裂纹形成的可能性。

    REDUCING SHEET DISTORTION IN FRICTION STIR PROCESSING
    8.
    发明申请
    REDUCING SHEET DISTORTION IN FRICTION STIR PROCESSING 审中-公开
    减少摩擦片加工中的片材变形

    公开(公告)号:US20090200359A1

    公开(公告)日:2009-08-13

    申请号:US12030353

    申请日:2008-02-13

    IPC分类号: B23K20/12

    摘要: Local heat may be generated through surfaces of sheet metal workpieces by supporting the workpiece(s) on a hard surfaced anvil and engaging the opposite surface of the workpiece with a rotating, and optionally translating, friction stir tool that is pressed against the work surface. Advantages are realized in friction stir processing (e.g. seam or spot welding) of such sheet metal workpieces by using an anvil with appreciable thermal conductivity, or a liquid cooled anvil body, to suitably cool the site(s) of the workpiece engaged by the friction stir tool to minimize or eliminate distortion of the workpiece.

    摘要翻译: 可以通过将工件支撑在硬表面的砧座上并且与工件的相对表面接合旋转的和可选地平移的摩擦搅拌工具来压在工作表面上,从而可以通过钣金工件的表面产生局部热量。 通过使用具有明显的导热性的砧座或液体冷却的砧体来实现这种钣金工件的摩擦搅拌处理(例如接缝或点焊)的优点,以适当地冷却通过摩擦接合的工件的位置 搅拌工具以最小化或消除工件的变形。