Anti-adhesion treatment of steel molds for use in rubber-, silicon rubber, thermoplastic- or thermoset injection molding, first nitrides or nitrates then adds chromium nitride layers

The surface is first nitrided (or nitrated). Formation of epsilon- and gamma iron nitrides contributes to surface hardening and conditioning for the next process. This comprises multilayer application of a closed, sealed chromium nitride layer. Plasma nitriding, laser nitriding or salt-bath nitridin...

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Bibliographische Detailangaben
Hauptverfasser:	HICKMANN, THORSTEN, LANGNICKEL, WOLFGANG, KURDA, NORBERT
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING CHEMICAL SURFACE TREATMENT CHEMISTRY COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY IONIMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL METALLURGY PERFORMING OPERATIONS SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDEDFOR SHAPING OR JOINING OF PLASTICS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	The surface is first nitrided (or nitrated). Formation of epsilon- and gamma iron nitrides contributes to surface hardening and conditioning for the next process. This comprises multilayer application of a closed, sealed chromium nitride layer. Plasma nitriding, laser nitriding or salt-bath nitriding is employed. Chromium nitride layer addition takes place: by sputtering, from the vapor phase or in a plasma process. Following application, the multi-layer is polished. Eine Anti-Haft-Schicht für Formwerkzeuge zur industriellen Kunststoffverarbeitung mit extrem geringer Rauhigkeit und hoher Vickers-Härte verlängert die Lebensdauer der Werkzeuge, verhindert zuverlässig und wirksam das Ankleben der Formkörper, muss nur selten gereinigt werden und verhindert zuverlässig Abrasions- und Korrosionseffekte.