High-strength high-wear-resistance alloy tool steel and smelting method thereof

The invention belongs to the technical field of steel smelting, and particularly relates to high-strength high-wear-resistance alloy tool steel and a smelting method thereof. The steel comprises the following chemical components in percentage by weight: 0.70%-0.76% of [C], 1.40%-1.60% of [Si], 0.50%-0.80% of [Mn], 1.00%-1.20% of [Cr], 0.20%-0.26% of [Ni], 0.14%-0.20% of [V], 0.020%-0.040% of [Al], less than or equal to 0.025% of [P], less than or equal to 0.020% of [S] and the balance of Fe and inevitable impurities. The smelting method comprises the steps of converter smelting, LF refining, RH vacuum treatment and bloom continuous casting. Aiming at the final application of the material, optimization design is conducted from the two aspects of components and the smelting process, and the smelted steel is stable in component, uniform in macrostructure and high in cleanliness. 本发明属于钢铁冶炼技术领域，具体的说是一种高强度高耐磨性合金工具钢及其冶炼方法。钢的化学成分按重量百分数计其元素组成为：[C]0.70％～0.76％、[Si]1.40％～1.60％、[Mn]0.50％～0.80％、[Cr]1.00％～1.20％、[Ni]0.20％～0.