一种双细化高强韧长寿命中高碳轴承钢及制备方法,属于高强韧长寿命轴承钢制造技术领域。该轴承钢化学组成为：0.64～0.94wt％C，1.20～1.80wt％Cr，≤0.65wt％Si，≤0.65wt％Mn，≤0.30wt％Ni，≤0.25wt％Cu，≤0.15wt％Mo，≤0.15wt％Nb，≤0.15wt％V，≤0.15wt％Zr，其中Nb、V、Mo和Zr添加总量要求0.10％≤Nb+V+Mo+Zr≤0.30％，余量为铁及不可避免的杂质。优点在于，具有组织细化、韧性高和疲劳寿命长，能够满足高端装备对高冲击、高转速、长寿命、高可靠性和低成本轴承钢组织性能需求。

The invention relates to a double-refining high strength and toughness long life hit high carbon bearing steel and a preparation method thereof, belonging to the technical field of manufacturing high strength and toughness long life bearing steel. The chemical composition of the bearing steel is: 0.64~0.94wt% C, 1.20~1.80wt% Cr, ≤ 0.65wt% Si, ≤ 0.65wt% Mn, ≤ 0.30wt% Ni, ≤ 0.25wt% Cu, ≤ 0.15wt% Mo, ≤ 0.15wt% Nb, ≤ 0.15wt% V, ≤ 0.15wt% Zr. The total amount of Nb, V, Mo and Zr added is required to be 0.10% ≤ Nb+V+Mo+Zr ≤ 0.30%, and the remainder is iron and inevitable impurities. The advantages are that it has fine structure, high toughness and long fatigue life, and can meet the requirements of high-end equipment for high impact, high speed, long life, high reliability and low cost bearing steel structure and performance.