Bearing steel

Details Bearing steel Bearing steel

1992-07-16

1993-10-26

Yee, Deborah

Metal treatment

Stock

Ferrous

148906, C22C 3800

Patent

active

052562131

ABSTRACT:
In order to produce bearing steels of long life and high reliability with a higher probability by utilizing parameters for cleanness evaluation that are related to the shortest life of bearings, in the present invention, the logarithmic decrease in the cumulative size distribution of oxide-type nonmetallic inclusions and the estimated maximum diameter of inclusion particles present per unit volume or unit area are determined from the particle size distribution of the oxide-type nonmetallic inclusions, and the cleanness of interest is specified on the basis of said logarithmic decrease or said estimated maximum inclusion diameter.

REFERENCES:
patent: 4927601 (1990-05-01), Iikubo et al.
patent: 4992111 (1991-02-01), Yamada et al.
patent: 5011304 (1991-04-01), Murakami et al.

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