| 摘要 |
A rolling contact parts steel has C: 0.2-0.6 wt%; Si: 0.3-2.0 wt%; Cr: 0.5-2.5 wt%; Mn: 1.7 wt% or less; O: 12 ppm or less; and the balance of Fe and an inevitable impurity. The steel produces a fine carbide without the need for a separate heat treatment. The dimensioal stability at high temperature of the steel is superior. A rolling bearing has at least one of the races and the rolling element thereof made of the steel, the steel being carburized or carbonitrided, then quenched and then, finally, tempered. The one of the races and the rolling element will not soften at a high temperature.
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