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发明公开
CN108707818A 一种有效提高辐板疲劳极限的高速铁路车轮及其制备方法 无效 - 驳回

一种有效提高辐板疲劳极限的高速铁路车轮及其制备方法
摘要：
本发明提供了一种有效提高辐板疲劳极限的高速铁路车轮及其制备方法，其化学成分重量百分比为：C 0.49‑0.53％、Si 0.20‑0.37％、Mn 0.80‑0.90％、Cr 0.15‑0.20％、V 0.10‑0.15％、P≤0.010％、S≤0.010％、N 60×10‑4‑90×10‑4％，其余为Fe和不可避免的杂质元素。与现有技术相比，本发明控制元素含量，配合处理工艺，相比ER8材质高速车轮钢，在轮辋机械性能水平基本相当的条件下，能够显著提高车轮辐板疲劳极限，从而有效增强了车轮的抗疲劳断裂能力，车轮设计安全冗余更大。
摘要（英）：

The invention provides a high-speed railway wheel capable of effectively improving fatigue limit of a wheel disk and a manufacturing method thereof. The high-speed railway wheel comprises the following chemical components in percentage by weight: 0.49-0.53% of C, 0.20-0.37% of Si, 0.80-0.90% of Mn, 0.15-0.20% of Cr, 0.10-0.15% of V, not greater than 0.010% of P, not greater than 0.010% of S, 60*10<-4>-90*10<-4>% of N, and the balance Fe and inevitable impurity elements. Compared with the prior art, the high-speed railway wheel capable of effectively improving the fatigue limit has the advantages that the element content is controlled; the processing technology is carried out; the fatigue limit of the wheel disk can be effectively improved under the basically equal mechanical performance level of a rim by being compared with an ER8 high-speed wheel steel. Therefore, the fatigue break resistance of the wheel can be effectively improved; and the wheel design reliability redundancy is improved.

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