SINTERED HYDRODYNAMIC BEARING MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a sintered hydrodynamic bearing manufacturing method requiring less steps for stably manufacturing a sintered hydrodynamic bearing which has reduced or closed spaces in pores without reducing its quality, and to provide the sintered hydrodynamic bearing in which lubricating oil is less absorbed. SOLUTION: The sintered hydrodynamic bearing manufacturing device comprises a molding step of compression molding material powder, a sintering step of sintering a molding obtained in the molding step, and a resin impregnating step of impregnating the pores of a porous sintered body obtained in the sintering step with liquid resin and hardening the liquid resin in the pores for sealing treatment. The porous sintered body has a porosity of 5-20% and contains Cu of 20 mass% or more. The liquid resin is an anaerobic resin monomer containing acrylic ester or methacrylic ester as a main component and organic peroxide of 0.1-1.0 mass%. COPYRIGHT: (C)2007,JPO&INPIT