Verfahren zur Herstellung von Uhrgehaeuseteilen und nach diesem Verfahren hergestellte Uhrgehaeuseteile

摘要

Method of making a watch case element by forming same of molybdenum and hardening by carburization producing a surface layer of molybdenum carbide, said carburization being carried out during the final manufacturing stage. A further treatment of the carburized element with hydrogen sulphide results in the formation of a dark coloured polishable surface which has fine brilliance.