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    • 4. 发明授权
    • Offset mold process
    • 胶印模具加工
    • US07213634B1
    • 2007-05-08
    • US11366681
    • 2006-03-02
    • Dwight EvansRussell Taccone, legal representative
    • Russell Taccone, Sr., deceased
    • B22D18/06
    • B22D18/04
    • An offset mold process deflects a mold assembly being conveyed along a first path laterally of that path into engagement with a nozzle using a shuttle car. Molten metal is pumped into the mold assembly, which is either a cope and drag mold or a lost foam mold, from below the molded part to eliminate eddy currents which can create incongruities in the molded part. One method of flow cutoff involves movement of a first mold component relative to the bottom board cuts off the flow of molten metal and locks the mold fill in the mold assembly. A second method of flow shutoff usable in the lost foam process involves the engagement of a flow cutoff plunger to cut the flow stream once filling the mold has been completed. In both the cope and drag and lost foam apparatuses, withdrawal of the shuttle car enables molten metal in the feed line to drain into a catch ladle obviating the need to burn embedded sand from the scrap prior to its recycling into the melt.
    • 偏移模具工艺使沿着该路径的第一路径被输送的模具组件偏转成与使用梭车的喷嘴接合。 熔融金属从模制部件的下方被泵送到模具组件中,模具组件是上模和拖模或丢失的模具,以消除可能在模制部件中产生不协调的涡流。 流动切断的一种方法包括第一模具部件相对于底板的移动,切断熔融金属的流动并将模具填充物锁定在模具组件中。 可用于失去泡沫过程的第二种流动关闭方法涉及一旦填充模具已经完成,流动切断柱塞的接合来切割流动流。 在上下料和失物泡沫装置中,往复车的撤出使得供料管线中的熔融金属能够排入到水桶中,从而避免在废料再循环到熔体中之前从废料中烧入嵌入的砂。
    • 6. 发明授权
    • Complex hole shaping
    • 复孔成型
    • US07041933B2
    • 2006-05-09
    • US10413341
    • 2003-04-14
    • Ronald E. ForresterDwight Evans KimberlinGregory J. Lang
    • Ronald E. ForresterDwight Evans KimberlinGregory J. Lang
    • B23H1/00B23H9/14
    • B23H7/28B23H7/26B23H7/265B23H7/30B23H9/10B23H9/14
    • A method for forming a complex hole through a wall of a structure. The complex hole has a smaller cross-sectional area within the wall and an outer portion with a larger cross-sectional area adjacent a first surface of the wall. The complex hole further has an inner portion extending between the smaller cross-sectional area and an inlet opening on a second surface of the wall. The method uses an EDM process to automatically first, form an entry hole in the wall extending from the first surface to a first location inside the wall, and second, form the outer portion of the complex hole in a direction moving from the first location inside the wall toward the first surface, and third, form the inner portion of the complex hole.
    • 一种通过结构的壁形成复合孔的方法。 该复合孔在该壁内具有较小的横截面面积,以及具有与壁的第一表面相邻的较大横截面积的外部部分。 复合孔还具有在较小的横截面积和在壁的第二表面上的入口之间延伸的内部部分。 该方法首先自动地进行EDM处理,在壁内形成从第一表面延伸到壁内的第一位置的入口孔,其次,在从第一位置向内移动的方向上形成复合孔的外部部分 朝向第一表面的壁,并且第三,形成复合孔的内部。
    • 8. 发明授权
    • Method and system for pumping molten metal
    • 用于泵送熔融金属的方法和系统
    • US07841379B1
    • 2010-11-30
    • US12218951
    • 2008-07-18
    • Dwight Evans
    • Dwight Evans
    • B22D35/04
    • B22D35/04B22D17/06B22D18/04
    • Method and apparatus for pumping molten metal from a reservoir into a preferably bottom-filled mold includes a pair of graphite pump crucibles partially submerged in a reservoir of molten metal. Check valves in the bottom of each crucible enable them to be filled to the same level as the reservoir. A high pressure inert gas supply operating through a pressure regulator, forces the molten metal from one of the crucibles up a riser tube to a horizontally extending runner and through a fill port into the mold. The pressure supply is then connected to the other crucible while the first refills.
    • 用于将熔融金属从储存器抽吸到优选底部填充的模具中的方法和装置包括部分浸没在熔融金属储存器中的一对石墨泵坩埚。 每个坩埚底部的止回阀使其能够被填充到与储存器相同的水平面上。 通过压力调节器操作的高压惰性气体供给迫使来自其中一个坩埚的熔融金属上升管到水平延伸的流道并通过填充口进入模具。 然后将压力供应器连接到另一个坩埚,同时首先重新装满。