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.
Caratteristiche dello strumento PCBN
PcBN strumento è stato ampiamente utilizzato nel settore del taglio CNC, è un materiale strumento con buone prospettive di sviluppo.
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.
Pechino Demina produce è affidabile nelle prestazioni e facile da usare. Gli utenti devono utilizzare pochissime abilità manuali solo quando lo utilizzano e possono macinare lame CVD, PCD, PCBN. Inoltre, è in grado di macinare inserti macchina utensile, taglierini, scanalature, carburo e HSS non - inserti standard, standard o non - utensili di saldatura standard, e vari altri utensili.
