Milling Cutters Resist Fracture
Mitsubishi Materials has expanded its AXD4000 series of milling cutters with GM breakers in MP9120 and TF15 grades.
Mitsubishi Materials has expanded its AXD4000 series of milling cutters with GM breakers in MP9120 and TF15 grades. The GM breakers are offered in 0.4- to 5.0-mm radii and are designed to increase fracture resistance. The wiper effect of the minor cutting edge is said to improve surface finishes. The MP9120 grade features an accumulated AL-Ti-Cr-N-based PVD coating over the cemented-carbide substrate, providing toughness, a low coefficient of friction, resistance to heat and welding wear. The multi-layering of the coating prevents cracks from penetrating through to the substrate, the company says. The MP 9120 grade is well-suited for machining titanium alloys and high-silicon-content aluminum alloys, while the TF15 is suitable for aluminum alloys.
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