PROCEDURE FOR PRODUCTION OF MULTI-LAYER COATING FOR CUTTING TOOL

摘要

FIELD: metallurgy. ^ SUBSTANCE: three-layer coating is applied on working surfaces of cutting tool by vacuum-plasma-procedure. Carbonitride of titanium and niobium is applied as a lower layer at pressure of acetylene in a chamber of the installation 7.510-4 Pa and temperature 600C. The same carbonitride alloyed with aluminium is applied as an intermediate layer at pressure of acetylene in the chamber of the installation 7.510-4 Pa and temperature 550C and carbonitride of titanium and aluminium is applied as an upper layer at pressure of acetylene in the chamber of the installation 4.310-3 Pa and temperature 500C. ^ EFFECT: increased functionality of cutting tool and quality of processing. ^ 1 tbl, 1 ex