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发明申请
WO2023019768A1 一种大规格长寿命高碳轴承钢棒材及其制备方法 审中-公开

一种大规格长寿命高碳轴承钢棒材及其制备方法
摘要：
一种大规格长寿命高碳轴承钢棒材及其制备方法，其组成包括：0.93～1.05wt％C，1.20～1.80wt％Cr，0.02～0.15wt％Mo，0.02～0.15wt％Nb，0.02～0.15wt％V，0.02～0.15wt％Zr，其中Nb、V、Mo和Zr的总量要求0.05wt％≤Nb+V+Mo+Zr≤0.30wt％，余量的铁及其他不可避免的杂质，通过将轴承钢进行Nb、V、Mo和Zr微合金化添加，大幅细化原始奥氏体组织与碳化物尺寸，使大规格轴承钢的接触疲劳寿命的大幅提升，满足大型轴承对大规格轴承钢棒材质量与寿命要求。
摘要（英）：

A large-specification long-service-life high-carbon bearing steel bar and a preparation method therefor. The large-specification long-service-life high-carbon bearing steel bar comprises the following components: 0.93-1.05 wt% of C, 1.20-1.80 wt% of Cr, 0.02-0.15 wt% of Mo, 0.02-0.15 wt% of Nb, 0.02-0.15 wt% of V, 0.02-0.15 wt% of Zr, and the balance of iron and other inevitable impurities, wherein the total amount of Nb, V, Mo, and Zr is required to satisfy: 0.05 wt%≤Nb+V+Mo+Zr≤0.30 wt%. Bearing steel is subjected to Nb, V, Mo and Zr microalloying addition, an original austenite structure and the carbide size are greatly refined, the contact fatigue life of the large-specification bearing steel is greatly prolonged, and the requirements of a large bearing for the quality and life of a large-specification bearing steel bar are satisfied.

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