PROCEDURE FOR CUTTING TOOL MULTI-LAYER COATING Russian patent published in 2011 - IPC C23C14/24 B23B27/14 

FIELD: machine building.

SUBSTANCE: two-layer coating is applied on working surfaces of cutting tool by vacuum-plasma procedure. As a lower layer there is applied titanium and silicon carbonitride or titanium and chromium carbonitride, or titanium and niobium carbonitride, of titanium and aluminium carbonitride, or titanium and iron carbonitride, or titanium and zirconium carbonitride. As an upper layer there is applied titanium and silicon nitride or titanium and chromium nitride, or titanium and niobium nitride, or titanium and aluminium nitride, or titanium and iron nitride, or titanium and zirconium nitride alloyed with molybdenum.

EFFECT: increased functionality of cutting tool and upgraded quality of processing.

1 tbl, 2 cl