Abstract
Industrial development focuses on multifunctional components due to rising requirements regarding e.g. light weight and security. A beneficial possibility to extend the functionality of structural components produced by metal forming is the usage of screen printed metal blanks. During the printing process insulating and electric inks are applied. The examined printed layer structure consists of three insulating full area layers and one conductive layer in the form of strain gauges. The two applied inks are solvent-based and printed with a half-automatic machine. To improve the adhesion and electric functionality, the impact of different mechanical and physical surface pre-treatments on the electrical characteristics is investigated in tensile tests. In particular, abrasive peening, ball peening, grinding and polishing (mechanical) and in addition plasma and corona technology (physical) were utilised. Contrary to expectations, the surface pre-treatment does not affect the adhesion to the steel sheet. The cracking of the printed strain gauges takes place prior to the delamination of the coating. Explanatory models are elaborated. They are based on the measurements of roughness, surface energy, edge sharpness and the electrical resistance of printed conductive structures before, during and after forming.
Similar content being viewed by others
References
Traub T, Gregório MG, Groche P (2018) A framework illustrating decision-making in operator assistance systems and its application to a roll forming process. Int J Adv Manuf Technol 97(9–12):3701–3710
Groche P, Ibis M, Hatzfeld C, Stöckigt A, Gerlitzky C (2014) Economic production of load-bearing sheet metal parts with printed strain gages by combining forming and screen printing. Int J Mater Form 8:269–282
Ibis M (2015) Umformen von Aluminiumblechen mit aufgedruckter Elektronik am Beispiel von Dehnungsmessstreifen. Shaker, Aachen
Grossman D, Patton P (2006) 14 test panels. In: Tracton A (eds) Coatings technology: fundamentals, testing and process techniques. CRC Press Taylor & Francis Group, Boca Raton, FL, pp 14-1–14-7
Brezesinski G, Mögel HJ (1993) Grenzflächen und Kolloide—Physikalisch-chemische Grundlagen. Spektrum Akademischer, Heidelberg
Rodríguez-Villanueva C, Encinas N, Abenojar J, Martínez MA (2013) Assessment of atmospheric plasma treatment cleaning effect on steel surfaces. Surf Coat Technol 236:450–456
Uhlmann E, Mernissi E, A (2008) Pre-treatment by dry ice blasting for adhesive bonding. Prod Eng Res Devel 2:133–138
Eckert W (2008) Corona and flame treatment. Flexo Gravure Int’L 2:24–27
Baira EM, Kretzschmar M, Hollan R, Heitmüller F, Uhlmann E (2014) Dry ice blasting as a pre-treatment process for electroplating. Adv Mater Res 1018:123–130
Habenicht G, Kleben (1997) Grundlagen, technologie, anwendungen. Springer, Berlin
Özkanat Ö, de Wit FM, de Wit JHW, Terryn H, Mol JMC (2013) Influence of pretreatments and aging on the adhesion performance of epoxy-coated aluminum. Surf Coat Technol 215:260–265
Diener electronic GmbH + Co. KG (eds) (2007) Plasma technology, information on http://www.plasma.de. Accessed 19 June 2018
Grundbegriffe (2007) In: Böge W, Plaßmann W (eds), Handbuch Elektrotechnik. Vieweg + Teubner, Wiesbaden, pp 253–255
DIN EN ISO 6892-1 (2014) Metallische Werkstoffe—Zugversuch—Teil 1: Prüfverfahren bei Raumtemperatur (ISO/DIS 6892-1:2014). Beuth, Berlin
Griesheimer S, Salun L, Dörsam E, Götz P, Ibis M, Rausch J (2010) Forming limit curves of flexible sensors on metal surfaces, In: Proceedings large-area, organic & printed electronics convention (LOPE-C)
webpage: KRÜSS GmbH (eds) Values for the surface free energy of solids. https://www.kruss-scientific.com/services/education-theory/substance-data/solids/. Accessed 19 June 2018
Acknowledgements
The presented investigations were carried out within the project ‘Methods for the design of formed metal parts with printed sensors’ (GR 1818/58-1). The authors thank the German Research Foundation (DFG) for supporting this project.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Groche, P., Kleemann, A. & Köhler, S. Surface pre-treatment and its influence on electric functionality and the formability of screen printed steel sheet. Prod. Eng. Res. Devel. 12, 789–795 (2018). https://doi.org/10.1007/s11740-018-0849-5
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11740-018-0849-5