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超细晶粒硬质合金刀片有高硬度与高强度兼备的特点,是加工普通硬质合金刀片所无法加工的材料的好刀片。制造超细晶粒硬质合金的前提是首先要求制备超细钨粉和超细碳化钨粉。制备这些超细原料有多种方法,其中最引人注目的是六氯化钨氢还原法。此法生产的超细钨粉,具有颗粒细、粒度均匀、纯度高、经济效果好等优点。我院特冶系稀冶专业师生以
Ultra-fine grain carbide inserts have the characteristics of both high hardness and high strength, and are good blades for processing materials that can not be processed by ordinary carbide inserts. The premise of the manufacture of ultra-fine grain cemented carbide is the first requirement for the preparation of ultrafine tungsten powder and ultrafine tungsten carbide powder. There are many ways to prepare these ultrafine raw materials, the most notable of which is tungsten hexachloride hydrogen reduction. This method produces ultra-fine tungsten powder, with fine particles, uniform particle size, high purity, good economic effect. Our hospital special smelting Department of professional teachers and students