Process for gas-nitriding workpieces of metals and alloys

The process for gas-nitriding workpieces of metals and alloys comprises heating the workpieces to the saturation temperature of the metals and alloys. After the temperature corresponding to the starting temperature of the dissociation of the saturating agent with formation of active nitrogen has bee...

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Bibliographische Detailangaben
Hauptverfasser:	ANDREEVIC GRACEV,KONSTANTIN, N. BUKAREV,VJACESLAV, GRIGOR'EVIC PAVLJUKOV,VALENTIN, MICHAJLOVIC GUSEV,BORIS
Format:	Patent
Sprache:	eng ; ger
Schlagworte:	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 GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THESURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION
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Beschreibung
Zusammenfassung:	The process for gas-nitriding workpieces of metals and alloys comprises heating the workpieces to the saturation temperature of the metals and alloys. After the temperature corresponding to the starting temperature of the dissociation of the saturating agent with formation of active nitrogen has been reached, a direct magnetic field is generated in the working space and crossed by an alternating magnetic field of technical frequency. Subsequently, the workpieces are held at this temperature and cooled to a temperature which corresponds to the temperature of the completion of the transformations in the iron/ nitrogen/carbon system. The action of the magnetic fields is then switched off and cooling of the workpieces is continued.