METHOD FOR OBTAINING MULTI-LAYERED COATING FOR CUTTING TOOL Russian patent published in 2015 - IPC C23C14/06 C23C14/24 B23B27/14 

FIELD: metallurgy.

SUBSTANCE: invention relates to methods of application of wear-resistant coatings to a cutting tool and can be used in metal working. Vacuum plasma application of a multi-layered coating is performed. First, a lower layer of chrome nitride is applied. Then, an upper layer of nitride of titanium, aluminium and chrome is applied at the following component ratio, wt %: titanium 70.5-79.5, aluminium 14.0-20.0, chrome 6.5-9.5. Application of layers of the coating is performed with three cathodes located horizontally in one plane, the first one of which consists of an alloy of titanium and aluminium, the second one consists of chrome and is located opposite to the first one, and the third one consists of titanium and chrome and is located between them; with that, the lower layer is applied using the second cathode, and the upper layer is applied using the first and the third cathodes.

EFFECT: improving operability of a cutting tool.

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