| 摘要 |
FIELD: metal working, namely applying of wear resistant coatings onto cutting tools. ^ SUBSTANCE: method is realized due to applying multi-layer coatings by vacuum-plasma process onto working surfaces of cutting tool. Upper layer of coating is characterized by high level of residual compression stresses in range 1500-2000 MPa and it lowers level of equivalent stresses in cutting wedge of tool during cutting process until values consisting 0.2 - 0.25 of ultimate strength of tool material. Inner layer of coating is characterized by level of residual stresses consisting 0.4 - 0.5 of stresses of upper layer. It provides good adhesion of coating with tool base. ^ EFFECT: enhanced fitness of tool for working, lowered consumption of tool materials. ^ 2 cl, 2 ex, 1 tbl |
