Bearing's component, heat treatment method thereof, heat...

Details Bearing's component, heat treatment method thereof, heat... Bearing's component, heat treatment method thereof, heat...

2011-08-23

2011-08-23

Roe, Jessee R. (Department: 1733)

Metal treatment

Stock

Carburized or nitrided

C148S218000

Reexamination Certificate

active

08002907

ABSTRACT:
Obtain a bearing's component, a heat treatment method thereof, and a rolling bearing having a long life against rolling contact fatigue and high anti-crack strength, and suppressed long-term dimensional variation rate. The bearing's component is carbonitrided at a carbonitriding temperature higher than an A1transformation point of steel for the bearing's component and then cooled to a temperature lower than the A1transformation point, and subsequently, using a heat treatment apparatus that successively moves and heats each individual bearing's component, reheated to a range of quenching temperature of no less than the A1transformation point and less than the carbonitriding temperature to be quenched.

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