Available in sizes of 8, 10, 12 and 16 mm inscribed circle diameter, the five grades cover physical vapour deposition (PVD) coated ACP100, 200 and 300 and chemical vapour deposition (CVD) coated ACK200 and 300.
The ACP100 for cutting steel and ACK200 grades for cast iron incorporate Sumitomo’s Super FF ultra-hard coating that employs a tough carbide substrate with an ultra-fine TiCN crystal structure. It has an ultra-smooth alumina on the surface and faces of the insert. This amalgamation of coating combinations enable up to 1.5 times greater efficiency in machining and provides more than a doubling of tool life over conventional grades under normal cutting conditions. The coated surface also has excellent chipping resistance and improved adhesion strengths.
The ACP200 and 300 grades for milling steel and ACK300 for cast iron employ Sumitomo’s Super ZX multi-layer nano technology coating, which combines alternating 10 nanometre thin layers of TiAN and AlCrN. Like Super FF, Super ZX delivers 1.5 times greater efficiency and double the tool life versus conventional grades, under normal cutting conditions. The coated surface also has excellent chipping resistance and improved adhesion strengths.
The ACP200 is ideal for general milling applications of steel, as well as die steels, while ACP300 is better for interrupted machining and is ideally applied for stainless steel processing. Meanwhile, ACK300 is specifically developed for general and interrupted milling of cast and ductile irons.
In a recent milling demonstration on die steel, the Sumitomo ACP200 grade increased the number of workpieces produced from 300 to 400. The machine was run at 150 m/min with 0.3 mm/tooth feed rate and 3 mm depth of cut.
