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VQN series expansion: latest coating technology and cutting edge geometries focused on machining Ni-based superalloys

The already successfully established VQ series of high-performance end mills from Mitsubishi Materials is now even more flexible and versatile, thanks to the new VQN versions. The new VQN4 / VQN6MVRB corner radius end mills as well as the VQN2MB, VQN4MB, VQN4MBF ball nose end mills offer excellent wear resistance and coating adhesion when machining Ni-based superalloys. The adapted number of cutting edges depending on the diameter guarantees stable and efficient machining even for complex applications and workpiece shapes.

Benefits Technology Availability

Benefits

New geometries for uncomplicated and reliable machining of Ni-based materials.

VQN2MB – 2-flute ball nose end mill with a specially reinforced and curved cutting edge for easy, reliable and stable milling.
VQN4MB –4-flute ball nose end mill with reinforced and curved cutting edges for more efficient milling. Special face geometry with only 2 cutting edges and therefore more space for improved chip flow.
VQN4MBF – 4-flute ball nose end mill with a focus on high accuracy finishing of Ni-based materials.
VQN4/6MVRB – 4/6 flute corner radius cutter with variable helix angle for vibration control and reinforced corner radius geometry with increased fracture resistance.

Technology

New revolutionary (Al, Ti, Si)-based coating

Compared to the conventional VQ end mill series, which is equipped with an (Al, Cr)N coating, the VQN range expansion has been equipped with a new and next generation (Al, Ti, Si)-based coating. The use of this coating in combination with the adapted substrate and special flute geometry enables significantly improved wear resistance and reliability when machining Ni-based materials. Likewise, the surface of the coating is subjected to additional smoothing and thus offers better surface qualities with reduced cutting resistance as well as providing optimised chip removal.