3 October 2019
Danish Technological Institute
Kongsvang Allé 29
8000 Aarhus C
Wear is a natural process removing material from contact interfaces. For structural components this means a degradation of the function and eventually leads to failure. This seminar will show different ways of decreasing the effects of wear and how to test it. The main focus will be on metallic components although some of the principles are common to all materials. The seminar is relevant for anyone working with structural components, R&D, production/sourcing, and technical service. No special background knowledge is needed although a general technical interest is essential.
|09.30-10.00||Registration & breakfast|
Introduction to wear and friction from a materials point of view
Emmanuel Georgiou, Project Manager, Falex Tribology, Belgium
This talk will give an introduction to the fundamental definitions of wear, tribology, and friction, and give insight into the parameters that influence these properties. It will show how wear and friction are system properties that can only be evaluated in terms of the conditions of a component. The realisation of this fact is important in order to create a common language and understanding, which makes it easier for product designers to make optimal materials selection or to estimate the impact of design choices on friction and wear properties. A common background and language gives an improved basis to speak to “tribology specialists”, whether they are materials engineers (e.g. coatings), chemists (lubrication) or mechanical tribologists and experimentalists.Emmanuel Georgiou holds a PhD in Materials Science on properties of aluminum alloys from NTUA, Greece. He has completed a Postdoc from KU Leuven (group of surface engineering and tribology), Belgium, and has worked as Project Manager at Falex tribology, Belgium since 2014.
PVD coatings for increased wear-resistance
Bjarke Holl Christensen, Seniorspecialist, Danish Technological Institute
The presentation will introduce physical vapour deposition (PVD) and new trends within the field. PVD is an industrially important process as the material demands are ever increasing. Coating solutions enable a decoupling of the bulk from the surface properties leading to new possibilities within process or product optimizations. Through cases, participants will gain insight into how wear reduction has been obtained leading to better production tools and processes but also on components leading to superior products.Bjarke Holl Christensen finalized his PhD within short-pulsed lasers in 2008 from the department of Physics and Astronomy, Aarhus University. Since then he has worked as a coating specialist at Danish Technological Institute. This has been within research and development projects but also introducing new commercial PVD products into production.
Electrochemical and chemical surface treatment as a solution to wear problems
Niels Kjærulff, Chemical engineer, Sur-Tech A/S
Sur-Tech offers a wide range of electrochemical (galvanic) and chemical processes for the industry. Some of these processes are performed to improve the wear properties. This talk will go over 3-5 of these processes, supported by relevant cases. In addition to the highlighted cases, the talk will also present Sur-Tech’s experience with coating of different substrates – what went well and what didn’t?Niels Kjærulff is a chemical engineer and has worked with galvanic surface treatment since 1995 and at Sur-Tech since 2009.
Wear and corrosion resistant cobalt-based alloys: Customized wear parts by casting, laser/plasma powder cladding and HVOF spraying
Ulf Jasnau, Head of Welding Systems, Deloro Wear Solutions GmbH, Germany
Cobalt based alloys are well known solutions for wear and corrosion resistance in harsh environments. This talk will give an introduction to different types of Cobalt based alloys as well as basic information on properties and structure of each technology in addition to examples of application and manufacturing of customized wear parts. Different approaches to manufacturing wear parts with Cobalt based alloys will be shown along with a comparative evaluation of each technology, making it easier for participants to evaluate the relevance of each technology to a specific case.Ulf Jasnau is an international welding engineer with many years of experience in the development of welding technologies. He has been with Deloro in Koblenz, Germany since 2012.
Heat treatment for improved corrosion, adhesion and fatigue performance of tools and machine components with special emphazis on laser surface treatment
This presentation will give an introduction to current and future industrial heat treatment processes, which are tools for better, smarter and more sustainable engineering and construction of tools and mechanical components. Participants will get a glimpse of the toolbox used for optimizing the combination of materials and heat treatment. Sustainability and lean production will call for more surgical, predictable and enhanced heat treatment processes, which will be outlined in modern laser surface technology.Johan Kinell is a graduate in Materials Science from Royal Institute of Technology, Stockholm, Sweden, and holds a MSc of University of British Columbia, Vancouver Canada.
Surface hardening: Improving resistance towards wear, impact, and corrosion on stainless steel
Rune Strand, Project Manager and Material Specialist, Expanite A/S
Many surface hardening techniques for iron-based alloys are known, and well implemented in the industry. This talk will focus on surface hardening of stainless steel, the challenges that are associated with surface hardening of stainless, along with the benefits and drawbacks of different processes. Participants will leave the talk with an understanding of the importance of choosing the right surface hardening method. For example:
A methodology for predicting limits of lubrication in metal forming applications
Esmeray Üstünyagiz, Postdoc, DTU Mecanical Engineering
To keep pace with the high growth rate of the developing industry, it is required to increase the productivity while ensuring high-quality products with good surface finish and tight tolerances. In order to ensure an efficient manufacturing line, the practice is to use chlorinated paraffin oil. However, increased environmental awareness and legislations may require changes in lubrication systems. Testing new tribo-systems involves considerable costs and risks due to production stops. The goal of the presentation is to introduce an off-line methodology to predict the limits of lubrication in industrial metal forming processes. The overall method is based on a combined numerical and experimental approach. The entire methodology or parts of it can be beneficial in solving or predicting the wear-related problems that are often the focus of the forming industry.Esmeray Üstünyagiz holds a MSc in mechanical engineering from TU Dortmund, Germany and a PhD in ‘Tribology in Sheet Metal Forming’ from DTU, Denmark. Currently, she is employed as Postdoc at DTU. Her research focuses on conventional and additive manufacturing technologies and numerical modelling.
The need for efficient wear testing and tribological data generation
Emmanuel Georgiou, Project Manager, Falex Tribology, Belgium
In order to minimize wear and optimize the performance of interacting components in industry efficient testing is necessary. A common challenge with tribological tests is the difficulty in simulating real in-service conditions and how to possibly being able to accelerate them. This talk will focus on the importance making wear testing for industrial purposes more efficient. It will give deal with basics on wear measurements, how to choose a relevant test that simulates the real wear mechanism, and basic statistics about wear damage in real life.Emmanuel Georgiou holds a PhD in Materials Science on properties of aluminum alloys from NTUA, Greece. He has completed a Postdoc from KU Leuven (group of surface engineering and tribology), Belgium, and has worked as Project Manager at Falex tribology, Belgium since 2014
|16.05-16.50||Tour of Tribology Center|
Members of ATV-SEMAPP or other promoting organizations: DKK 2,150
Non-members: DKK 2,775
M.Sc. students: DKK 200 & Ph.D. students: DKK 975 (Membership is free of charge. Early bird discount does not apply)
All prices are exclusive of 25 % VAT.
Early bird discount of DKK 200 when registering before 30 August 2019.
The fee includes talks, breakfast, lunch and coffee breaks.
Registration is binding, however substitutions are accepted at any time.
Please do not hesitate to contact ATV-SEMAPP by e-mailing email@example.com or phoning Jytte Laursen +45 4525 4898 or Charlotte Leser +45 4525 4899.