论文部分内容阅读
金属陶瓷在金属切削加工领域中已占一定的位置,可用于精加工非合金钢、合金钢、特殊合金钢、不锈钢和耐酸钢及铸铁。金属陶瓷是由陶瓷和金属成分组成,即由氮化物、碳氮化物和碳化物和金属粘结相组成。与硬质合金比较,金属陶瓷具有含氮化物硬质材料,其优点是抗月牙洼膳损性能好。用金属陶瓷车削加工时的主要优点是切削刃锋利、热硬性高、抗氧化性能好、切削刃稳定性好、摩擦系数小。因而在使用中,切削力减小,切削速度提高,工件温度降低,工件表面质量提高,尺寸稳定性好。车削时,根
Cermet has a certain position in the field of metal cutting and can be used for finishing non-alloy steel, alloy steel, special alloy steel, stainless steel and acid-proof steel and cast iron. Cermet is composed of ceramic and metal components, namely, nitride, carbonitride and carbide and metal bonding phase. Compared with cemented carbide, cermets have nitride-containing hard materials, the advantages of anti-crescent depression good performance. The main advantages of turning with cermet are sharp cutting edges, high hot hardness, good oxidation resistance, good cutting edge stability and low coefficient of friction. Therefore, in use, the cutting force is reduced, the cutting speed is increased, the workpiece temperature is reduced, the surface quality of the workpiece is improved, and the dimensional stability is good. Turning, root