Watch exterior parts and manufacturing method thereof.

摘要

A watch exterior part is formed of cemented carbide or alloy corresponding to stellite, and has a three-dimensional curved surface of an as-sintered surface or a small hole 2 with an as-sintered surface on its interior peripheral surface, or has a three-dimensional curved surface of a polished surface obtained by polishing an as-sintered surface. The watch exterior part is manufactured by a method in which organic binder is mulled into material powder, and a molded body obtained by injection molding is applied to binder removing process and then sintered. By the manufacturing method, a watch exterior part formed of cemented carbide or alloy corresponding to stellite with high strength having complicated configuration such as a three-dimensional curved surface and a small hole is provided without applying secondary operation such as discharge operation. <IMAGE>