Method for the production of a part of a rolling bearing

Details Method for the production of a part of a rolling bearing Method for the production of a part of a rolling bearing

2005-01-04

2005-01-04

Yee, Deborah (Department: 1742)

Metal treatment

Stock

Ferrous

C148S906000, C148S589000, C384S625000, C384S912000

Reexamination Certificate

active

06837946

ABSTRACT:
Method for the production of a part of a rolling bearing, such as a ring for a ball bearing. The starting material used is a grade of steel containing 0.90 1.00% C; at most 0.15% Si; 0.25-0.45% Mn; at most 0.0015% P; at most 0.010% S; 1.30-1.50% Cr; at most 0.15% Ni; 0.20-0.23% Mo; at most 0.20-0.23% Cu; at most 20 ppm Ti; at most 8 ppm O. Before subjecting this grade of steel to a quenching and tempering treatment, the shaped item is subjected to plastic deformation in the hot or cold state. The mechanical properties and in particular the anticipated life under severe stress improve as a result.

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