NOZZLE VANE MANUFACTURING METHOD, NOZZLE VANE, VARIABLE NOZZLE MECHANISM, AND TURBOCHARGER

摘要

PPROBLEM TO BE SOLVED: To provide a nozzle vane manufacturing method for manufacturing a nozzle vane excelling in durability and dimensional accuracy at a low cost while improving productivity, and also to provide a nozzle vane having excellent durability and exhibiting desired characteristics, a variable nozzle mechanism, and a turbocharger. PSOLUTION: The nozzle vane manufacturing method has: a molding process A for molding a composition containing metal powder and an organic binder to obtain a molding comprising a shaft part and a blade part formed to project at least in one direction perpendicular to an axis from the shaft part, and a center hole formed in at least one end face of the shaft part; a degreasing process B for removing the organic binder from the inside of the molding to obtain a degreased body; a baking process D for baking the degreased body to obtain a sintered body; and a shaft machining process (machining process E) for applying machining including cutting and/or grinding to a portion corresponding to the shaft part of the sintered body by using a portion corresponding to the center hole of the sintered body. PCOPYRIGHT: (C)2010,JPO&INPIT