Watch exterior parts and manufacturing method thereof

摘要: A watch exterior part is formed of cemented carbide or stellite alloy, and has a three-dimensionally curved as-sintered surface small hole with an interior peripheral surface, polished obtained by polishing surface. The manufactured method in which organic binder milled into material powder, molded body injection molding subjected to removing process then sintered. By the manufacturing method, alloy high strength complicated configuration such as three-dimensional hole, without applying secondary machining operations discharge operations.