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    • 10. 发明公开
    • SEAL RING AND METHOD OF FORMING MICRO-TOPOGRAPHY RING SURFACES WITH A LASER
    • DICHTUNGSRING UND VERFAHREN ZUR FORMUNG EINER MIKRO-TOPOGRAPHIE AUFRINGOBERFLÄCHENMIT EINEM LASER
    • EP1311778A4
    • 2009-08-19
    • EP01952522
    • 2001-07-05
    • FLOWSERVE MAN CO
    • YOUNG LIONEL ASTALOCH JEFFREY R
    • F16J15/34B23K26/06B23K26/073
    • B23K26/073B23K26/361F16J15/3424F16J15/3428
    • A seal ring of a shaft seal has micro-topography depth features, such as wavy faces or radial grooves, formed in the seal face which define a hydrodynamic seal region between opposing seal faces. The micro-topography depth features are formed by an excimer laser shaped such that the beam shape at least has non-linear side edges which define convergent side areas of the beam. The convergent side areas are defined by side edge sections which converge toward each other and preferably are non-linear. For example, the beam shape may be circular or elliptical. The laser beam first cuts repeatedly along the same beam path to define a cut with an increasing depth, whereby the laser beam is shifted incrementally sidewardly to define multiple adjacent beam cuts that form the micro-topography feature such as a valley of a wavy face, a radial groove or the like. As the laser beam cuts adjacent parallel grooves, sidewardly adjacent beam passes overlap one with each other and blend the edges of the sidewardly adjacent grooves together. The method of the invention provides micro-topography depth features that are precisely and accurately defined to improve performance of the seal ring.
    • 轴封的密封环具有形成在密封面中的微观形貌深度特征,例如形成在相对密封面之间的流体动力密封区域的波纹面或径向凹槽。 微形貌深度特征由准分子激光器形成,其形状使得束形状至少具有限定光束的会聚侧面区域的非线性侧边缘。 会聚侧区域由侧边缘部分限定,该边缘部分朝向彼此会聚,优选地是非线性的。 例如,梁的形状可以是圆形或椭圆形。 激光束首先沿着相同的光束路径重复切割以限定具有增加的深度的切割,由此激光束向外逐渐偏移以限定形成微观形貌特征的多个相邻光束切割,例如波浪面的谷, 径向槽等。 随着激光束切割相邻的平行凹槽,侧向相邻的光束通过彼此重叠并将侧面相邻凹槽的边缘混合在一起。 本发明的方法提供了精确和精确地限定以提高密封环性能的微观形貌深度特征。