Patent ID: 6837946
Filing Date: 2005-01-04
Classification: C21D,C22C,F16C,Y10S

Abstract:
1. Method for the production of a part of a rolling bearing, comprising the provision of a grade of steel containing, in % (by wt.), 0.90-1.00 C; at most 0.15 Si; 0.25-0.45 Mn; at most 0.015 P; at most 0.010 S; 1.30-1.50 Cr; at most 0.15 Ni; 0.20-0.23 Mo; at most 0.20 Cu; at most 20 Ti (ppm); at most 8 O (ppm), wherein a shaped item is produced from this steel, starting from a ferritic structure thereof, and is subjected to a heat treatment in order to increase the hardness at the surface of the item, followed by a machining after-treatment, if appropriate, the shaped item being plastically deformed before the heat treatment.