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The wear-resistant Super FF coating (Fine and Flat) on Sumitomo’s AC820P and AC830P grades is said to reduce the possibility of chip adhesion due to its smoothness. Combined with carbide substrates, the series is said to offer higher speed capabilities and greater resistance to breakage than conventional carbide grades when machining steels and stainless steels.
The AC820P is suited for general-purpose machining and is available with a variety of chip breakers, including the high-efficiency EGE. For interrupted applications, the AC830P can sustain more impacts than conventional P30 grades, the company says.
Editor PickHitting the Coolant Sweet Spot
Toolholders with integrated cutting fluid delivery channels offer threaded, fixed-position nozzles that direct parallel streams of coolant to pre-defined positions at the top of the cutting tool.