Patent ID: 6062015
Filing Date: 2000-05-16
Classification: C23C,D01H

Abstract:
A spinning rotor for an open-end spinning machine comprising a spinning cup having an interior spinning area defined by a circumferential fiber collection groove, a fiber slide face annularly adjacent one side of the groove and a bottom surface annularly adjacent an opposite side of the groove, the interior spinning area having a coating forming an exposed surface facing the interior spinning area of the spinning cup, the coating having an essentially uniform thickness comprising a nickel dispersion layer with grains of a hard material embedded therein, wherein the concentration of the hard material grains at the surface of the coating in the area of the groove is greater than at the surface of the coating in the area of the fiber slide face and the bottom surface, and the concentration of the hard material grains across the thickness of the coating outside of the groove decreases progressively in the direction toward the surface of the coating.