Tool grades

PVD Coating

Under the PVD method, a coating is applied to the surface of a metal under low temperatures. This method is used quite frequently with drills, end mills, and threading tools. This method can also be used for steel (other than cemented carbide) and cermet materials.


One example of this is a two-layer structure of titanium aluminum nitride deposited on a base metal.


The process is complicated and time-consuming for any coating. You can use this fact as a simple explanation as to the high cost of tools coated using this method. Because a cathode is required for each coating they are conducted in single layers.


As the coating temperature of PVD is lower (up to 700C, 1290F) than that of CVD damage to a substrate during coating (a decrease in toughness) is reduced. So, even the sharp edge* can maintain toughness. PVD is applied to many tools, including drills, end mills and threading tools.


In the past, almost all PVD coating materials have been either TiN or TiCN. However with the rapid development of PVD coating technology, (Al,Ti)N coating has become the most popular coating material in recent years.


A dedicated substrate is not required. PVD coating can be performed on existing.


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P.V.D-coated grade

(AI, Ti)N

Carbide substrate

Cross section of the micro-structure