PROCESS FOR TREATING STEEL COMPONENTS

A method of treating a contact surface of a steel component of a rolling contact loaded machine element (e.g. a rolling bearing element) which has a surface layer predominantly having a martensitic and/or bainitic microstructure by cold-working the region of the element adjacent the surface layer to...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
1. Verfasser:	GEGNER, Juergen
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BEARINGS BLASTING CHEMISTRY CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION ORPROCESSING OF GOODS ELEMENTS OR CRANKSHAFT MECHANISMS ENGINEERING ELEMENTS AND UNITS FLEXIBLE SHAFTS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS HEATING LIGHTING MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS MECHANICAL ENGINEERING METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS ROTARY BODIES OTHER THAN GEARING ELEMENTS SHAFTS TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE THERMAL INSULATION IN GENERAL WEAPONS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	A method of treating a contact surface of a steel component of a rolling contact loaded machine element (e.g. a rolling bearing element) which has a surface layer predominantly having a martensitic and/or bainitic microstructure by cold-working the region of the element adjacent the surface layer to introduce a compressive residual stress of at least 400 MPa to a depth of at least 50 microns, machining the contact surface and heat treating the cold-worked and machined steel component below the tempering or transformation temperature of the steel. Cold working can be by shot peening, burnishing or deep rolling and machining can be by grinding, honing, polishing, lapping, super-finishing, cutting or turning. The heat treatment can be at a temperature in the range 140-230 0C for a duration in the range 5 minutes to 2 hours. The component can be coated, e.g. black oxide or PVD before or during heat treatment.