Patents Assigned to Aplicaciones Industriales de Cromo Duro, S.A.
  • Method for improving frictional surface in cylinders or sleeves of internal combustion engines
    Patent number: 4065365
    Abstract: Method of preparing chromium plated surfaces of improved anti-friction property, by machining the base material to a smooth finish, chromium plating the machined surface of the base material, heating the chromium plated surface at 150.degree.-325.degree. C for 1-3 hours, cooling and honing the surface, and lapping the surface with an abrasive to a surface finish such that the roughness of the surface measures 25-50 micro-inches center line average.
    Type: Grant
    Filed: December 29, 1976
    Date of Patent: December 27, 1977
    Assignee: Aplicaciones Industriales de Cromo Duro, S.A.
    Inventor: Juan Retolaza Ibarguengoitia