Hybrid single crystal-powder metallurgy turbine component
    222.
    发明授权
    Hybrid single crystal-powder metallurgy turbine component 有权
    混合单晶粉末冶金涡轮机组件

    公开(公告)号:US06709771B2

    公开(公告)日:2004-03-23

    申请号:US10155257

    申请日:2002-05-24

    Applicant: James Allister

    Inventor: James Allister

    Abstract: A hybrid component (30) having a cast single crystal superalloy portion (32) and an attached powder metallurgy material portion (34). The component may be a blade (30) of a gas turbine engine having a single crystal airfoil section and a powder metallurgy material root section. The powder metallurgy material may extend to form a core (36) within the airfoil section and may include cooling passages 38. The single crystal portion has a relatively simple geometry so that casting yields are optimized. The powder metallurgical portion includes the lower stressed and more complicated geometry sections of the component. A method of forming such a component includes casting the single crystal superalloy portion, then using that portion to form part of the mold for forming the powder metallurgy material portion.

    Abstract translation: 具有铸造单晶超合金部分(32)和附着的粉末冶金材料部分(34)的混合部件(30)。 该部件可以是具有单晶翼型部分和粉末冶金材料根部的燃气轮机的叶片(30)。 粉末冶金材料可以延伸以在翼型部分内形成芯部(36)并且可以包括冷却通道38.单晶部分具有相对简单的几何形状,使得铸造产量被优化。 粉末冶金部分包括部件的较低应力和更复杂的几何形状部分。 形成这种组分的方法包括浇铸单晶超合金部分,然后使用该部分形成用于形成粉末冶金材料部分的模具的一部分。

    Method of making labyrinth seal lips for the moving parts of turbomachines
    226.
    发明申请
    Method of making labyrinth seal lips for the moving parts of turbomachines 失效
    为涡轮机运动部件制造迷宫式密封唇的方法

    公开(公告)号:US20030062256A1

    公开(公告)日:2003-04-03

    申请号:US10237696

    申请日:2002-09-10

    Applicant: SNECMA MOTEURS

    Abstract: In order to make labyrinth seal lips on the periphery of a metal moving part of a turbomachine, a thick layer of refractory material that adheres to the metal is made prior to assembling the moving part, the refractory material advantageously comprising at least one metal selected for example from Fe, Co, and Ni, together with at least one ceramic selected for example from borides, nitrides, carbides, and refractory oxides. The labyrinth seal lips that are to be made are machined to their final dimensions in the deposited thick layer.

    Abstract translation: 为了在涡轮机的金属运动部分的周边上制造迷宫式密封唇,在组装移动部件之前制成粘附于金属的厚层耐火材料,耐火材料有利地包括至少一种选自 例如Fe,Co和Ni,以及选自例如硼化物,氮化物,碳化物和难熔氧化物中的至少一种陶瓷。 要制成的迷宫式密封唇被加工成沉积的厚层中的最终尺寸。

    Manufacturing of Nitinol parts and forms
    228.
    发明授权
    Manufacturing of Nitinol parts and forms 失效
    镍钛诺零件和形式的制造

    公开(公告)号:US06422010B1

    公开(公告)日:2002-07-23

    申请号:US09879371

    申请日:2001-06-11

    Inventor: Gerald J. Julien

    Abstract: The invention includes processes and products made by the processes. The processes include making forms and parts by friable mold casting or die casting using molten Nitinol poured or injected into the mold or die. After the Nitinol has cooled to a solid state, it is removed from the mold by disintegrating the friable material of the mold and is heated to an elevated temperature under high pressure to consolidate the Nitinol and remove any internal voids. The parts and forms are then heat treated to reduce brittleness and improve toughness and impact strength. The part may be hot machined to reduce it to near net size, and may be ground to reduce the part to the exact specified part size. For example, cylindrical parts can be centerless ground; balls can be ground in a conventional ball grinder; flat stock can be surface ground. For parts requiring a smooth surface finish, polishing or lapping provides the specified surface finish on the part, down to 0.5 microinch RMS or finer. The part may be heat treated to obtain the desired hardness, from RC40 to RC65. An integral surface oxide of any of several colors can be formed on the surface of the part. The oxide surface may itself be polished to an even finer surface finish. Shape memory effect may be obtained in Type 60 Nitinol parts and forms that have been hot-worked by heat treating to about 675° C.-700° C. and oven cooling slowly over 8-10 hours to ambient temperature.

    Abstract translation: 本发明包括由该方法制备的方法和产品。 这些方法包括通过使用熔融的镍钛诺(Eloy)浇注或注入模具或模具中的脆性模铸或压铸来制造形式和零件。 在镍钛诺已经冷却到固态之后,通过将模具的易碎材料分解,将其从模具中除去,并在高压下加热至高温以固化镍钛诺并除去任何内部空隙。 然后对这些部件和形式进行热处理以降低脆性并提高韧性和冲击强度。 该部件可以被热加工以将其减小到接近净尺寸,并且可以被研磨以将部件减小到确切的指定部件尺寸。 例如,圆柱形部件可以是无心磨削的; 球可以在传统的球磨机中研磨; 平面库存可以是地面。 对于需要光滑表面光洁度的部件,抛光或研磨可在部件上提供指定的表面光洁度,低至0.5微英寸RMS或更细。 该部件可以被热处理以获得期望的硬度,从RC40到RC65。 可以在部件的表面上形成多种颜色中的任何一种的整体表面氧化物。 氧化物表面本身可以被抛光到更细的表面光洁度。 形状记忆效应可以通过热处理至约675℃-700℃和烘箱在8-10小时内缓慢冷却至环境温度的60型镍钛诺部件和形式中获得。

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