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发明公开
CN101948983A 一种钢轨钢及该钢轨钢的制备方法 失效 - 权利终止

一种钢轨钢及该钢轨钢的制备方法
摘要：
钢轨钢及其制备方法，其中，以该钢轨钢的总重量为基准，C含量为0.65-0.75重量％，Mn含量为0.80-1.30重量％，Si含量为0.10-0.50重量％，V含量为≤0.03重量％，P含量为≤0.025重量％，S含量为0.008-0.025重量％，Al含量为≤0.004重量％，余量为铁；所述钢轨钢的洁净度由T[O]含量、[H]含量以及A类、B类、C类和D类非金属夹杂物的含量级别表示，其中，该钢轨钢中的T[O]总氧含量为≤0.0020重量％，[H]含量为≤0.0002重量％，按照夹杂物评级标准GB/T10561-2005评价出该钢轨钢中的A类夹杂物为≤1.5级、B类夹杂物为≤1.0级别、C类夹杂物为≤1.0级、D类夹杂物为≤1.0级。本发明提供的高速铁路用钢轨钢中的夹杂物含量、[H]、T[O]含量较低，实现了有效提高钢轨钢的钢水洁净度的目的。
摘要（英）：

The invention relates to a rail steel and a preparation method thereof. The rail steel contains the following components by taking the total weight of the rail steel as reference 0.65-0.75wt% of C, 0.80-1.30wt% of Mn, 0.10-0.50wt% of Si, less than or equal to 0.03wt% of V, less than or equal to 0.025wt% of P, 0.008-0.025wt% of S, less than or equal to 0.004wt% of Al, the balance of iron. Cleanliness of the rail steel is indicated by the grade of T(O) content, (H) content and contents of nonmetallic inclusions A, B, C and D, wherein total oxygen content T(O) in the rail steel is less than or equal to 0.0020wt%, (H) content is less than or equal to 0.0002wt%, and according to inclusion rating standard GB/T10561-2005, the inclusion A in the rail steel is less than or equal to 1.5 grade, the inclusion B is less than or equal to 1.0 grade, inclusion C is less than or equal to 1.0 grade, and the inclusion D is less than or equal to 1.0 grade. The rail steel for high speed railway provided by the invention has low inclusion content, low (H) content and low T(O) content, and the aim of effectively improving cleanliness of molten steel of rail steel is realized.

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