Production method for a functional element for wristwatches like a wristwatch case produces a blank as a sintered compact from special steel via carbon diffusion

摘要

A blank for a wristwatch case (1) as a functional element is produced as a sintered compact by using special steel as sintering material. Mechanical/chemical processing is performed on the surfaces of the blank produced. Carbon diffusion disperses carbon atoms into a metal grid in the blank.