PCBN tool is used to turn hardened steel, it is required that the quenching hardness of the workpiece should be higher than 45 ~ 55HRC. When hard cast iron is processed, as long as the hardness reaches the medium hardness level (45HRC), a good processing effect will be achieved. For example, the exhaust valve seat on the cylinder head of an automobile engine is made of high chromium alloy cast iron material containing copper and molybdenum, the hardness of which is generally about 44HRC.
Características de la herramienta PCBN
La herramienta PcBN ha sido ampliamente utilizada en la industria de corte CNC, es un material de herramientas con buenas perspectivas de desarrollo.
PCBN tool the hole of the valve seat is countersunk (reaming), two kinds of process, most of which are processed on the special automatic line, together with the gun reaming pipe hole. Adopted by the cutting dosage is nu c = 71.6 m/min, nu f = 26.5 mm/min, alpha p = 1.0 mm, with BC broaching oil. After processing by the PCBN cutting tool, compared with using various carbide insert processing, cutting tool durability for an average of 1200 pieces. The processing surface roughness is Ra0.4 microns, seat surface runout 0.05 mm or less. Since the use of the PCBN tool in Dongfeng motor engine plant in 1988, the effect has been stable, and the tool localization problem of imported equipment has been well solved.
Beijing Demina produce es fiable en rendimiento y fácil de manejar. Los usuarios sólo necesitan usar muy pocas habilidades manuales al usarlo y pueden moler cuchillas CVD, PCD, PCBN. Además, puede moler inserciones de máquinas herramienta, cortadoras aburridas, grooving, carburo y HSS insertos no estándar, herramientas de soldadura estándar o no estándar, y varias otras herramientas.
