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Failure of Physical Vapour Deposition Coating Zirconium Nitride on the Punch of Clinching Tool Cover

Failure of Physical Vapour Deposition Coating Zirconium Nitride on the Punch of Clinching Tool

Open Access
|Jun 2017

Abstract

A tool with a punch of ø5 mm and a die with a specially formed circular cavity and an annular gap was used for mechanical joining of thin hot-dip galvanized steel sheets. The active parts of punch and die were covered by PVD coating of ZrN type with LARC technology. The punches and the dies were tested in a complex tool by joining thin hot-dip galvanized steel sheets with the pressing force of 7,000 N. Decohesion of coating with width of 100 – 200 μm was observed in the perimeter of cylindrical part of ø5×4 mm in the in edge of punch radius R = 0.5 mm with deposited ZrN coating after the creation of 150 mechanical joints. The decohesion of PVD coating occurred mainly in the surroundings of the radius R = 0.5 mm on the front plane of ø15 mm part.

DOI: https://doi.org/10.1515/ama-2017-0022 | Journal eISSN: 2300-5319 | Journal ISSN: 1898-4088
Language: English
Page range: 143 - 149
Submitted on: Nov 10, 2015
Accepted on: May 25, 2017
Published on: Jun 15, 2017
Published by: Bialystok University of Technology
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2017 Miroslav Džupon, Ľuboš Kaščák, Dušan Németh, Réne Kubík, published by Bialystok University of Technology
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.