Aluminum-containing high-boron high-speed steel and manufacturing method thereof

The invention provides aluminum-containing high-boron high-speed steel and a manufacturing method thereof and belongs to the technical field of wear-resistant materials. A medium-frequency induction furnace is used for carrying out smelting, the steel is manufactured with, by mass percentage, 45%-48% of Q235 scrape steel, 34%-37% of W6Mo5Cr4V2Al high-speed scrap steel, 2.5%-2.8% of boron iron, 6.2%-6.5% of carbon chrome iron, 1.8%-2.2% of rare earth silicon iron and 6.6%-7.0% of multi-element aluminum iron alloy, and after smelting, casting and heat treatment are carried out, the steel has excellent mechanical performance and high-temperature wear-resistant performance, has a good using effect under the high-temperature wear working condition, and has remarkable economic and social benefits by means of application and popularization. 种含铝高硼高速钢及其制备方法，属于耐磨材料技术领域。使用中频感应电炉熔炼，采用质量分数45～48％的Q235废钢、34～37％的W6Mo5Cr4V2Al高速钢废料、2.5～2.8％的硼铁、6.2～6.5％的碳素铬铁、1.8～2.2％的稀土硅铁和6.6～7.0％的多元铝铁合金配料，经熔炼、铸造和热处理后，具有优良的力学性能和高温耐磨性能，在高温磨损工况下具