CUTTING TOOL WITH DIAMOND-LIKE WEAR-RESISTANT COATING Russian patent published in 2020 - IPC B23C5/00 B23C5/10 

FIELD: metal cutting tools.

SUBSTANCE: invention relates to metal cutting tool, in particular, to cutters and replaceable cutting plates used for milling articles from high-strength steels and hard-to-process materials, as well as for aluminum processing. Cutting tool comprises working part with cutting edges formed at intersection of front and rear surfaces. Wear resistant coating with non-uniform thickness is applied on working part, and at least one layer contains phase with diamond-like amorphous carbon. In each cross-section of the front surface along each cutting edge, the cross-section area of the layer containing the diamond-like amorphous carbon phase per one millimeter of the cutting edge length is in range of 1,300–2,700 mcm² at content of tetrahedral phase of amorphous carbon in this layer in range of 85–90 % of its composition and its microhardness in range of 80–100 GPa.

EFFECT: higher efficiency and resistance of cutting tool.

7 cl, 4 dwg