Repair of a turbine engine surface containing crevices
    1.
    发明授权
    Repair of a turbine engine surface containing crevices 有权
    修复含有缝隙的涡轮发动机表面

    公开(公告)号:US08595929B2

    公开(公告)日:2013-12-03

    申请号:US12909183

    申请日:2010-10-21

    IPC分类号: B23P6/00

    摘要: A composition and method for cleaning turbine engine components (10) during servicing. An embodiment of the invention includes a colloidal mixture or slurry (22) of nanoparticles. The slurry may be nontoxic and provide optimal cleaning of tiny surface-exposed crevices (18) of braze joints and components. When a colloidal mixture is in a polar solvent, the pH of the slurry is maintained at about 5 to 9 and at the isoelectric point of the nanoparticles to minimize or prevent agglomeration. When a colloidal mixture is in a nonpolar solvent, the pH of the slurry is maintained at about 5 to 9 and at the isoelectric point of the nanoparticles to minimize or prevent agglomeration by use of surfactant additives.

    摘要翻译: 在维修期间清洁涡轮发动机部件(10)的组合物和方法。 本发明的一个实施方案包括纳米颗粒的胶态混合物或浆液(22)。 浆料可以是无毒的并且提供对钎焊接头和部件的微小表面暴露缝隙(18)的最佳清洁。 当胶体混合物在极性溶剂中时,浆料的pH值保持在约5至9,并且在纳米颗粒的等电点处以最小化或防止聚集。 当胶体混合物在非极性溶剂中时,浆料的pH保持在约5至9,并且在纳米颗粒的等电点处,以通过使用表面活性剂添加剂来最小化或防止团聚。

    USE OF ELEVATED PRESSURES FOR REDUCING CRACKS IN SUPERALLOY WELDING AND CLADDING
    3.
    发明申请
    USE OF ELEVATED PRESSURES FOR REDUCING CRACKS IN SUPERALLOY WELDING AND CLADDING 审中-公开
    用于减少超级焊接和封盖中的裂纹的高压

    公开(公告)号:US20140209576A1

    公开(公告)日:2014-07-31

    申请号:US13754967

    申请日:2013-01-31

    IPC分类号: B23K26/34

    摘要: A superalloy component, such as gas turbine blade or vane, is structurally welded by placing the component in an isolation chamber. Inert gas is introduced into the chamber. The substrate is welded in the chamber, creating a weld zone. Pressure is applied directly on the weld zone that is greater than atmospheric pressure. Application of such pressure increases the weld zone ductility and reduces likelihood of solidification cracking and strain age cracking, compared to weld zones formed at atmospheric pressure. In some embodiments an isostatic pressure chamber is used to apply isostatic pressure on the weld zone. In other embodiments the welding is performed by laser welding or cladding, TIG welding electron beam welding or autogenous welding.

    摘要翻译: 通过将组件放置在隔离室中,结构性地焊接超级合金部件,例如燃气轮机叶片或叶片。 惰性气体被引入腔室。 将衬底焊接在腔室中,形成焊接区域。 压力直接施加在大于大气压力的焊接区上。 与大气压力下形成的焊接区相比,这种压力的应用增加了焊接区延展性,并降低了凝固裂缝和应变时效开裂的可能性。 在一些实施例中,等静压压力室用于对焊接区施加等静压。 在其它实施例中,焊接通过激光焊接或包层,TIG焊接电子束焊接或自发焊接来进行。

    FATIGUE RESISTANT TURBINE THROUGH BOLT
    4.
    发明申请
    FATIGUE RESISTANT TURBINE THROUGH BOLT 审中-公开
    通过螺栓的耐疲劳涡轮

    公开(公告)号:US20150107072A1

    公开(公告)日:2015-04-23

    申请号:US14059528

    申请日:2013-10-22

    IPC分类号: F16B33/06 B23P9/02

    摘要: A fatigue resistant turbine through bolt formed from a base material covered by a first surface modification and a second surface modification is disclosed. The first surface modification may be in contact with the base material and, in at least one embodiment, may be a low plasticity burnished layer that increases the residual compressive stresses on an outer surface of the turbine through bolt. The second surface modification may cover the first surface modification and, in at least one embodiment, may be a spinel oxide layer on the low plasticity burnished layer. The second surface modification may be positioned on the first surface modification or on the bare turbine through bolt contact surface without low plastiocity burnishing on the shaft of the turbine through bolt. The first and second surface modifications reduce the likelihood of fretting fatigue failures.

    摘要翻译: 公开了一种由基材覆盖的第一表面改性和第二表面改性形成的耐疲劳涡轮机通过螺栓。 第一表面改性可以与基材接触,并且在至少一个实施方案中可以是低塑性抛光层,其通过螺栓增加涡轮机的外表面上的残余压应力。 第二表面改性可以覆盖第一表面改性,并且在至少一个实施方案中可以是低塑性抛光层上的尖晶石氧化物层。 第二表面改性可以通过螺栓接触表面定位在第一表面改性或裸露的涡轮机上,而不会通过螺栓在涡轮轴上的低塑性抛光。 第一和第二表面修改减少了疲劳疲劳失效的可能性。