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一机部上海材料研究所在上海工具厂协助下,以水雾化法制取优质高速钢粉末,分别采用烧结致密和模锻二条工艺路线,制成了无钻的PVN超硬高速钢,在十多家工厂中使用,均获得满意的效果,其性能和特点是:1.不含稀缺的钻,符合我国资源情况,便于推广生产。2.综合性能好,碳化物分布细小均匀,各向同性,硬度HRC 67～69,抗弯强度220～280公斤/毫米~2,冲击值0.8～1.5公斤·米/厘米~2,红硬性高,600℃保温4小时HRC为66～67。它的硬度虽高,但可磨性仍很好,为铝高速钢的2～3倍,与铸锻W18Cr4V1钢相近,切削寿命为W 18Cr4V 1
A machine Shanghai Institute of Materials with the help of the Shanghai Tools Factory, the water atomization method to obtain high-quality high-speed steel powder, respectively, by sintering dense and die forging two process routes, made of non-drilling PVN super hard high-speed steel, Used in a number of factories, are satisfied with the results, and its performance and features are: 1. Excluding rare scarcity of resources in line with our situation, to facilitate the promotion of production. 2. Good overall performance, small and uniform carbide distribution, isotropic, hardness HRC 67 ~ 69, bending strength 220 ~ 280 kg / mm ~ 2, the impact of 0.8 to 1.5 kg · m / cm ~ 2, red hard high , HRC 66 ~ 67 for 4 hours at 600 ℃. Its hardness is high, but the grindability is still very good, for aluminum high-speed steel 2 to 3 times, and forging W18Cr4V1 steel similar cutting life of W 18Cr4V 1