Development and research of vacuum-plasma composite coatings for increase of operability of shearing dies

Abstract

Abstract. The technological principles of low-temperature deposition of multilayer vacuum-plasma coatings with the increased operational properties on various types of die steels with the assistance of accelerated argon molecules beam are offered in the article. Four standard architecture of vacuum-plasma coatings -Ti/(Ti,Zr)N, Cr/CrN, TiN/TiCN/(Ti,Cr)N and Ti/(Ti,Al)N are considered. It is shown that deposition of vacuum-plasma coatings of the listed structures at the optimum modes considerably reduces intensity of wear of shearing dies therefore quality of shaped products several times increases.

The influence of hydrojet surface processing on the adhesive strength of wear-resistant coatings deposited on a metal-cutting tool of oxynitride ceramics

“…One of the most effective methods to increase reliability of the ceramic tools is to deposit thin-film wearresistant coatings by physical vapor deposition (PVD) technique [4,5]. However, there is a problem of poor adhesion between the coating and substrate due to low conductivity [6,7]. This article proposes the solution of this problem by using hydrojet treatment as preliminary surface preparation stage.…”