论文部分内容阅读
随着难加工材料的日益增多,超硬刀具材料如陶瓷、立方氮化硼及各种新牌号的硬质合金材料也得到越来越广泛的应用。我们曾采用株洲硬质合金厂生产的新牌号YH2硬质合金,对淬火轴承钢、淬火高速钢等难加工材料孔边行铰削试验,结果比较满意,现就有关情况作一简介。铰刀结构硬质合金刀片采用YH2E525型,其硬度为HRA92.5,抗弯强度不低于1600N/mm~2,密度为13.9～14.2g/cm~3。刀杆材料采用40Cr钢,热处理后硬度达HRC38～42。
With the increasing number of difficult-to-machine materials, super-hard tool materials such as ceramics, cubic boron nitride and a variety of new grades of cemented carbide materials have also been more and more widely used. We have used Zhuzhou Carbide plant production of new grades of YH2 cemented carbide, quenched bearing steel, hardened high-speed steel and other difficult-to-machine materials hole edge reaming test, the results are satisfactory, the situation is to make a brief introduction. Reamer knives carbide structure using YH2E525 type, the hardness of HRA92.5, bending strength of not less than 1600N / mm ~ 2, the density of 13.9 ~ 14.2g / cm ~ 3. Arbor material 40Cr steel, hardness HRC38 ~ 42 after heat treatment.