Solid-liquid composite lubricated powder sintered bearing and manufacturing method thereof

摘要

The present invention relates to a solid-liquid composite lubricated powder sintered bearing and a method of manufacturing the same, and more particularly, to a method of manufacturing the bearing, comprising: pressing a porous powder and sintering to prepare a porous powder sintered body; Activating the surface of the sintered body and then converting it to hydrophilicity; And hardening by impregnating a surface of the sintered body with a solid lubricant, and then impregnating a liquid lubricant. In addition, the solid-liquid composite lubricated powder sintered bearing of the present invention comprises a metal powder particles sintered layer having a solid and liquid lubricant impregnated between the particles; And it has a structure including a solid lubricating film laminated on the metal powder sintered layer, it is economical because it can be used for a long time with precise dimensions, excellent lubricity, smaller friction coefficient and less wear.