Following the successful introduction of its GC4330 and GC4340 steel milling grades, Sandvik Coromant is now extending the range of application for these advanced insert grades to additional milling concepts. The grades are now available for selection with the CoroMill 300 round-insert face and profile mill; the CoroMill 245 multi-purpose face milling cutter; and the CoroMill QD cutter, which is optimized for deep and narrow grooving and parting off.
GC4330 and GC4340, which feature a specially developed substrate, Inveio coating and enhanced post-treatment technology, allow users to enjoy substantially increased tool life and process security. The extension of these grades to additional Sandvik Coromant milling concepts brings their advantages to even more machine shops looking to optimize the milling of steel workpieces.
Among the many design attributes of GC4330 and GC4340 is the optimized Inveio coating. Inveio is the technical breakthrough of uni-directional crystal orientation in the alumina coating layer that gives inserts a new level of wear resistance and tool life. Furthermore, the substrate of the grades delivers highly controlled grain size distribution for more reliable and predictable insert behaviour.
GC4330 is a medium-hard grade for roughing to semi-finish face milling, while the GC4340 grade is for rough shoulder milling and groove milling. Both grades are also extended to the CoroMill 360 heavy-duty face mill, CoroMill 419 high-feed mill, and LPMH-PM plunge-cutter inserts. In addition, GC4330 is available for the CoroMill 365 high-security face mill, while GC4340 can be applied to the CoroMill 216 ball-nose end mill and CoroMill 415 small-diameter high-feed face mill.
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