Surface modifications for optimized forming operations

authored by: G. Braeuer, H. Paschke, M. Weber, B. A. Behrens, T. Yilkiran
Abstract: During forming operations the contact conditions relating to the surface of the tools, the intermediate coolant or lubricant and the hot work piece material are determining the material flow and the resulting wear. The possibilities for an optimization of the tool surfaces are aspects of various scientific activities of IST and IFUM and are subject of this paper. Tools typically made of hot working steel can be treated with different technologies in order to achieve wear resistant properties. First of all, the surface is mainly determined by its topography which is defined by the manufacturing method or applied finishing technology. This paper will give an overview to adjustable surface properties with additional conditioning methods like severe shot peening. The stabilization of the topography is a new approach to enhance the wear resistance of forming tools. Several models like the Abbott-Firestone graph are used in order to obtain suitable describing parameters such as the roughness-parameter sκ. The development of sκ during the running-in stage has a strong influence on the tool life which can be shown. A stabilization of the topographical conditions can enhance the service life of the tools. It will be shown, that this is possible by applying plasma diffusion treatments and thin film coatings by means of vacuum coating technologies..
Organisation(s): Institute of Metal Forming and Metal Forming Machines
External Organisation(s): Fraunhofer-Institute for Surface Engineering and Thin Films (IST)
Type: Conference contribution
Pages: 231-239
No. of pages: 9
Publication date: 23.05.2014
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: General Materials Science, Mechanics of Materials, Mechanical Engineering
Electronic version(s): https://doi.org/10.4028/www.scientific.net/kem.611-612.231 (Access: Closed)
: Details in the research portal "Research@Leibniz University"

BibTeX

@inproceedings{2d8dab3851a84e2f83563f58ae7918a6,
title = "Surface modifications for optimized forming operations",
abstract = "During forming operations the contact conditions relating to the surface of the tools, the intermediate coolant or lubricant and the hot work piece material are determining the material flow and the resulting wear. The possibilities for an optimization of the tool surfaces are aspects of various scientific activities of IST and IFUM and are subject of this paper. Tools typically made of hot working steel can be treated with different technologies in order to achieve wear resistant properties. First of all, the surface is mainly determined by its topography which is defined by the manufacturing method or applied finishing technology. This paper will give an overview to adjustable surface properties with additional conditioning methods like severe shot peening. The stabilization of the topography is a new approach to enhance the wear resistance of forming tools. Several models like the Abbott-Firestone graph are used in order to obtain suitable describing parameters such as the roughness-parameter sκ. The development of sκ during the running-in stage has a strong influence on the tool life which can be shown. A stabilization of the topographical conditions can enhance the service life of the tools. It will be shown, that this is possible by applying plasma diffusion treatments and thin film coatings by means of vacuum coating technologies..",
keywords = "Boron based Coating, Cracks, Die Wear, Doped CrN, Duplex-Process, Forging",
author = "G. Braeuer and H. Paschke and M. Weber and Behrens, {B. A.} and T. Yilkiran",
note = "Copyright: Copyright 2020 Elsevier B.V., All rights reserved.; 17th Conference of the European Scientific Association on Material Forming, ESAFORM 2014 ; Conference date: 07-05-2014 Through 09-05-2014",
year = "2014",
month = may,
day = "23",
doi = "10.4028/www.scientific.net/kem.611-612.231",
language = "English",
isbn = "9783038351061",
series = "Key Engineering Materials",
publisher = "Trans Tech Publications Ltd",
pages = "231--239",
booktitle = "Material Forming ESAFORM 2014",
}