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Sumitomo Electric Carbide’s AC420K insert is a CVD-coated carbide grade that features layers of TiCN and Al2O3 for wear, chipping and heat resistance. The coating is designed to improve tool life. ISO classified as a K20 grade, the insert is designed for cast iron roughing applications involving medium to heavy interruptions. The flat surface of the Super FF coating also improves chip adhesion resistance.
Editor PickCan Additive Manufacturing Increase Milling Feed Rates?
With PCD tooling, yes it can. The diamond cutting edges demand a large number flutes to realize their full effectiveness. Traditional methods for making cutter bodies limit the number of flutes, but 3D printing is delivering tools with higher flute density and other enhancements as well.