NANOLAMINATED COATED CUTTING TOOL

摘要

The present invention relates to a cutting tool insert for machining by chip removal comprising a body of a hard alloy of cemented carbide, cermet, ceramics, cubic boron nitride based material or high speed steel, onto which a hard and wear resistant coating is deposited by physical vapour deposition (PVD). Said coating comprises a polycrystalline nanolaminated structure of alternating layers A and B where layer A is (Ti,Al,Me1)N and Me1 is optionally one or more of the metal elements from group 3, 4, 5 or 6 in the periodic table, layer B is (Ti,Si,Me2)N and Me2 is optionally one or more of the metal elements from group 3, 4, 5 or 6 in the periodic table including Al with a thickness between 0.5 and 20 um and method of making the same. This insert is particularly useful in metal cutting applications generating high temperatures with im-proved edge integrity, e.g., machining of super alloys, stainless steels and hardened steels.