BEARING STEEL MATERIAL HAVING SUPERIOR COLD-WORKABILITY AND METHOD FOR PRODUCING SAME

PROBLEM TO BE SOLVED: To provide a bearing steel material exhibiting good cold-workability when bearing components are manufactured by cold-working.SOLUTION: A bearing steel material satisfies a predetermined elemental composition, and further satisfies, in a parent phase region (interface region) f...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	KAIZUKA MASAKI, SHINTO YOSUKE
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS BEARINGS BLASTING CHEMISTRY ELEMENTS OR CRANKSHAFT MECHANISMS ENGINEERING ELEMENTS AND UNITS FERROUS OR NON-FERROUS ALLOYS 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 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 THERMAL INSULATION IN GENERAL TREATMENT OF ALLOYS OR NON-FERROUS METALS WEAPONS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	PROBLEM TO BE SOLVED: To provide a bearing steel material exhibiting good cold-workability when bearing components are manufactured by cold-working.SOLUTION: A bearing steel material satisfies a predetermined elemental composition, and further satisfies, in a parent phase region (interface region) from the surface of spheroidized cementite to a position of 20 nm away, no greater than 0.6% (excluding 0%) of Si (interface Si), no greater than 0.10% (excluding 0%) of Ni (interface Ni), no greater than 0.10% (excluding 0%) of Cu (interface Cu), no greater than 0.03% (including 0%) of Mo (interface Mo), no greater than 0.10% (excluding 0%) of Mn (interface Mn), and no greater than 0.9% (excluding 0%) of Cr (interface Cr), and is characterized in that the circularity coefficient of the spheroidized cementite is at least 0.80.