Investigation of surface finishing of carbon based coated tools for dry deep drawing of aluminium alloys

Steiner J, Andreas K, Merklein M (2016)

Publication Type: Journal article

Publication year: 2016

Journal

IOP Conference Series: Materials Science and Engineering IOP Publishing: Conference Series

Publisher: Institute of Physics Publishing

Book Volume: 159

Pages Range: 12022_1-10

Journal Issue: 1

DOI: 10.1088/1757-899X/159/1/012022

Abstract

Global trends like growing environmental awareness and demand for resource efficiency motivate an abandonment of lubricants in metal forming. However, dry forming evokes increased friction and wear. Especially, dry deep drawing of aluminum alloys leads to intensive interaction between tool and workpiece due to its high adhesion tendency. One approach to improve the tribological behavior is the application of carbon based coatings. These coatings are characterized by high wear resistance. In order to investigate the potential of carbon based coatings for dry deep drawing, friction and wear behavior of different coating compositions are evaluated in strip drawing tests. This setup is used to model the tribological conditions in the flange area of deep drawing operations. The tribological behavior of tetrahedral amorphous (ta-C) and hydrogenated amorphous carbon coatings with and without tungsten modification (a-C:H:W, a-C:H) is investigated. The influence of tool topography is analyzed by applying different surface finishing. The results show reduced friction with decreased roughness for coated tools. Besides tool topography the coating type determines the tribological conditions. Smooth tools with ta-C and a-C:H coatings reveal low friction and prevent adhesive wear. In contrast, smooth a-C:H:W coated tools only lead to slight improvement compared to rough, uncoated specimen.

Authors with CRIS profile

Jennifer Tenner Institute of Manufacturing Technology Kolja Andreas Institute of Manufacturing Technology Marion Merklein Institute of Manufacturing Technology

Additional Organisation(s)

Institute of Manufacturing Technology

Related research project(s)

Lubricant free forming with tailored tribological conditions SPP 1676: Nachhaltige Produktion durch Trockenbearbeitung in der Umformtechnik Oct. 1, 2015 - July 31, 2020 Lubricant free forming with tailored tribological conditions SPP 1676: Nachhaltige Produktion durch Trockenbearbeitung in der Umformtechnik Oct. 1, 2013 - Sept. 30, 2018

How to cite

APA:

Steiner, J., Andreas, K., & Merklein, M. (2016). Investigation of surface finishing of carbon based coated tools for dry deep drawing of aluminium alloys. IOP Conference Series: Materials Science and Engineering, 159(1), 12022_1-10. https://dx.doi.org/10.1088/1757-899X/159/1/012022

MLA:

Steiner, Jennifer, Kolja Andreas, and Marion Merklein. "Investigation of surface finishing of carbon based coated tools for dry deep drawing of aluminium alloys." IOP Conference Series: Materials Science and Engineering 159.1 (2016): 12022_1-10.

BibTeX: Download