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    • 72. 发明申请
    • WELDING HEAD
    • 焊接头
    • US20140175076A1
    • 2014-06-26
    • US13723310
    • 2012-12-21
    • CATERPILLAR INC.
    • Huijun WangMatthew J. BehmlanderTimothy A. ThorsonFred E. Sallo
    • B23K9/28
    • B23K9/1735B23K9/042
    • A welding head is provided. The welding head includes a bracket. The bracket includes a central block coupled to it. The central block includes a tip holder detachably coupled to a lower portion of the central block and a plurality of contact tips attached to the tip holder. Each contact tip is adapted to receive an electrode. The bracket also includes a pair of side blocks pivotally coupled to the bracket and provided on either sides of the central block. Each side block includes a side tip holder detachably coupled to a lower portion of the side block and a side contact tip attached to the side tip holder. Each of the side contact tip is adapted to receive the electrode. The side blocks are capable of variable positioning relative to the bracket.
    • 提供焊接头。 焊头包括支架。 支架包括与其相连的中央块。 中心块包括可拆卸地联接到中心块的下部的尖端保持器和附接到尖端保持器的多个接触尖端。 每个接触尖端适于接收电极。 托架还包括一对枢转地联接到支架并且设置在中央块的两侧上的侧块。 每个侧块包括可拆卸地联接到侧块的下部的侧刀片保持器和附接到侧刀片保持器的侧接触末端。 每个侧接触尖端适于接收电极。 侧块能够相对于支架可变定位。
    • 78. 发明申请
    • Alloy Depositing Machine And Method Of Depositing An Alloy Onto A Workpiece
    • 合金沉积机和将合金沉积在工件上的方法
    • US20120325779A1
    • 2012-12-27
    • US13166319
    • 2011-06-22
    • Alexei Yelistratov
    • Alexei Yelistratov
    • B23K9/04
    • B23K9/04B23K9/042B23K9/173B23K9/324
    • A hardfacing machine is used for depositing a hardfacing alloy onto a metallic workpiece. An welding unit includes a wire feed system to supply wire to a welding head. A powder alloy feeding system includes a powder feed nozzle fluidly connected to an alloy powder supply. The welding head and powder feed nozzle move in a travel direction relative to the workpiece. The powder feed nozzle is positioned and oriented to feed a powder stream of alloy powder into a molten pool generated on the workpiece by an electrical arc produced by the welding head at a low temperature location behind the welding head relative to the travel direction. This alloy surfacing strategy limits vaporization of alloy elements by avoiding the high temperature region associated with the electrical arc.
    • 使用表面硬化机将表面合金沉积在金属工件上。 焊接单元包括将焊丝供给到焊接头的送丝系统。 粉末合金进料系统包括流体连接到合金粉末供应的粉末进料喷嘴。 焊头和粉末供给喷嘴相对于工件在行进方向上移动。 粉末供给喷嘴的定位和定向是将合金粉末的粉末流通过焊接头在焊接头后方的低温位置相对于行进方向产生的电弧而在工件上产生的熔池中进料。 这种合金表面策略通过避免与电弧相关的高温区域来限制合金元素的蒸发。
    • 79. 发明申请
    • ELECTRON BEAM LAYER MANUFACTURING USING SCANNING ELECTRON MONITORED CLOSED LOOP CONTROL
    • 使用扫描电子监控闭环控制的电子束层制造
    • US20110114839A1
    • 2011-05-19
    • US12902520
    • 2010-10-12
    • Scott SteckerPhillip E. Wollenhaupt
    • Scott SteckerPhillip E. Wollenhaupt
    • G21G5/00
    • H01J37/304B22F3/1055B22F2003/1056B22F2998/00B23K9/042B23K15/0013B23K15/0086B33Y10/00B33Y50/02C22C14/00H01J37/3005H01J37/305Y02P10/295B22F3/003
    • A process (and apparatus for performing the process) for layer manufacturing a three-dimensional work piece comprising the steps of; feeding raw material in a solid state to a first predetermined location; exposing the raw material to an electron beam to liquefy the raw material; depositing the raw material onto a substrate as a molten pool deposit, the deposit having a forward edge region in an x-y plane with a forward edge region width and a trailing edge region in the x-y plane with a trailing edge region width, under at least one first processing condition; monitoring the molten pool deposit for at least one preselected condition using detecting of scatter from a scanning electron beam contemporaneously with the depositing step; solidifying the molten pool deposit; automatically altering the first processing condition to a different processing condition based upon information obtained from the comparing step; and repeating steps at one or more second locations for building up layer by layer, generally along a z-axis that is orthogonal to the x-y plane, a three-dimensional work piece.
    • 一种用于制造三维工件的层的工艺(以及用于执行该工艺的装置),包括以下步骤: 将原料以固态进料到第一预定位置; 将原料暴露于电子束以使原料液化; 将原料沉积在基底上作为熔池沉积物,沉积物具有在xy平面中的前边缘区域,具有前边缘区域宽度和在xy平面中具有后缘区域宽度的后缘区域,在至少一个 第一处理条件; 使用与沉积步骤同时的扫描电子束的散射检测来监测熔池沉积物的至少一个预选条件; 凝固熔池沉积物; 基于从所述比较步骤获得的信息,自动地将所述第一处理条件改变为不同的处理条件; 并且在一个或多个第二位置重复步骤,以逐层建立,一般沿着与x-y平面正交的z轴,三维工件。