Mitsubishi Carbide introduces Smart Miracle end mills for difficult materials
Mitsubishi Carbide is introducing a series of Smart Miracle end mills for machining stainless steels, titanium alloys, Inconel and other difficult-to-cut materials. Smart Miracle refers to the latest development of the company's Miracle coating. The surface of the (Al, Cr)N type coating is also given a smoothening treatment to provide what the company describes as a 'zero-µ' finish.
Unlike earlier coating technologies, says Mitsubishi, the Smart Miracle end mills retain their cutting edge sharpness and have significantly better wear resistance.
The three end mills initially available in the series also feature irregular helical flutes to counter the vibration in difficult material machining and in applications involving a long overhang. End mill VQMHV has four flute flutes, medium cut length with variable helix at 37º and 40º; VQMHVRB is a four-flute, medium length radius type with variable helix at 37º and 40º; and VQMHZV, for slotting, has three flutes, medium cut length and variable helix at 43.5º, 45º and 46.5º.
The conventional two-stage gash has been rounded to avoid concentration of stresses to improve fracture resistance. Pocket size has been optimised to facilitate chip discharge.
