These 2+2 flute compression spirals from our Persistence Pro© range feature solid K10 grade micro-grain tungsten carbide bodies with a DLC coating. This gives a high performance product which typically offers 2-3 times the life of uncoated TC, with the additional benefit of a low coefficent of friction and smoother cutting on all timber based materials.
DLC coating (diamond like carbon) is a surface finish applied to the solid tungsten carbide cutter body by Plasma Enhanced Chemical Vapour Deposition (PE-CVD) under vacuum and at low temperature.
The PE-CVD applied coating of hybridized carbon, SP2 graphite and SP3 diamond, gives a harder surface coat with a lower friction co-efficient, leading to a tool life which is typically 2-3 times that of untreated STC.
Principal technical data:
Vickers hardness HV 2500-3100
Deposition temperature 170 °C
Maximum usage temperature 250 °C
Thickness µ 1-3
Coefficient of friction 0.01-0.05X