High-strength bearing steel wide steel strip for automobile and preparation method of high-strength bearing steel wide steel strip

The invention relates to the technical field of steel production, in particular to a wide high-strength bearing steel strip for an automobile and a preparation method of the wide high-strength bearing steel strip, and the wide high-strength bearing steel strip comprises the following components: 0.99-1.07% of C, 0.20-0.35% of Si, 0.25-0.45% of Mn, 0-0.010% of S, 0-0.010% of P, 0-0.010% of S and the balance of Fe. The alloy comprises the following components in percentage by weight: 0 to 0.020 percent of P, 1.50 to 1.70 percent of Cr, 0.10 to 0.50 percent of Ni, 0.010 to 0.060 percent of Als, 0 to 0.20 percent of Cu, 0 to 0.0080 percent of As, 0 to 0.0015 percent of O, 0 to 0.0060 percent of N, 0 to 0.5 percent of impurities and the balance of Fe. The bearing steel wide steel strip prepared through the method is high in strength, good in hardenability and abrasion resistance, low in inclusion content and high in uniformity. 本发明涉及钢铁生产技术领域，具体而言，涉及一种汽车用高强度轴承钢宽钢带及其制备方法，该轴承钢宽钢带的组分包括：C：0.99-1.07%，Si：0.20-0.35%，Mn：0.