title: [Recovery of galvanoplastic die-models--actual level and prospective development].
abstract: In contrast to the conventional methods of making galvanoplastic die-models a new technology of electrotype with copper is described. The important differences are the new mechanical arrangement of the electrolyticall cell, the using of a high constant current-density and the using of an open system with a continuous flowrate of the electrolyte and its constant temperature. With the new technology it is possible to get galvanoplastic dies from negativs with small diameter and with a high value of depth. The time of the electrochemical process is decreasing from 8 to 10 hours of only 40 minutes and the surface hardness is increasing from MHV 80 to MHV 160.
authors.forename: F
authors.initials: F
authors.lastname: Schaefer
mesh_terms: D003300:Copper; D004572:Electrolysis; D004595:Electroplating; D008722:Methods; D003765:Models, Dental
chemical_list: D003300:Copper
vernacular_title: Technologie der galvanoplastischen Herstellung von Zahnstumpfmodellen. Stand und Weiterentwicklung.