| 摘要 |
A high-temperature rolling bearing part which consists of a steel material containing in alloy element mass % at least 0.6 to up to 1.3 % of C, at least 0.3 to up to 3.0 % of Si, at least 0.2 % to up to 1.5 % of Mn, up to 0.03 % of P, up to 0.03 % of S, at least 0.3 to up to 5.0 % of Cr, at least 0.1 to up to 3.0 % of Ni, up to 0.05 % of Al, up to 0.003 % of Ti, up to 0.0015 % of O, up to 0.015 % of N and the remaining components of Fe and unavoidable impurities, and which has a construction obtained by being tempered after hardened or carbonitrided, with a temper hardness of at least HRC 58 and a maximum carbide size of up to 8 mu m, whereby a high-temperature rolling bearing part is provided that has an excellent rolling fatigue life even in foreign matter-mixed and high-temperature environments and is less costly. |
