Effect of ductile cast iron tool with grooved polishing and die coatings on friction behaviour in flat strip drawing of A7075-T6 alloy strip with quick heating

–

Effect of ductile cast iron tool with grooved polishing and die coatings on friction behaviour in flat strip drawing of A7075-T6 alloy strip with quick heating

HARADA Sohdai, MAENO Tomoyoshi, NOMURA Atsuya, HIROSAWA Shoichi, YABUKI Yuji, SUZUKI Yasushi

Abstract. A7075 aluminium alloy, a heat-treatable aluminium alloy, is expected to be applied to automobile frame parts from the viewpoint of high strength and light weight. To form this aluminium alloy, hot stamping using quick contact heating with a hot plate has been developed. To prevent seizure caused by hot stamping, the frictional properties of different tool coatings under warm and dry conditions were investigated by drawing tests of aluminium alloy strips using quick contact heating. Diamond like carbon (DLC) showed a low coefficient of friction and prevented seizure. The warm forming process allows the use of liquid lubricants. The frictional properties of cast iron and a simple surface texturing technique, grooved polishing, were investigated under warm and liquid lubrication conditions. The cast iron with grooved polishing showed the reduction in friction equivalent to DLC and prevented seizure as well.

Keywords
Aluminium, Hot Stamping, Warm Forming, Friction, Die Material, Surface Texture, Seizure, Lubricant

Published online 9/15/2024, 9 pages
Copyright © 2024 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: HARADA Sohdai, MAENO Tomoyoshi, NOMURA Atsuya, HIROSAWA Shoichi, YABUKI Yuji, SUZUKI Yasushi, Effect of ductile cast iron tool with grooved polishing and die coatings on friction behaviour in flat strip drawing of A7075-T6 alloy strip with quick heating, Materials Research Proceedings, Vol. 44, pp 456-464, 2024

DOI: https://doi.org/10.21741/9781644903254-49

The article was published as article 49 of the book Metal Forming 2024

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

References
[1] R.P. Garret, J. Lin, T.A. Dean, Solution heat treatment and cold die quenching in forming AA 6xxx sheet components: Feasibility study, Adv. Mater. Res. 6-8 (2005) 673-680. https://doi.org/10.4028/www.scientific.net/AMR.6-8.673
[2] T. Maeno and T. Taniguchi，Japan Patent, JP 2019-188453. (2019).
[3] Y. Dong, K. Zheng, J. Fernandez, X. Li, H. Dong, and J. Lin, Experimental investigations on hot forming of AA6082 using advanced plasma nitrocarburised and CAPVD WC: C coated tools: J. Mater. Process. Technol. 240 (2017) 190-199. https://doi.org/10.1016/j.jmatprotec.2016.09.023
[4] D. Gowda, Tribological Characterization of Centrifugally Cast Graphite Cast Iron under Dry and Wet conditions, Materials Today: Proceedings 5 (2018) 145–151. https://doi.org/10.1016/j.matpr.2017.11.065
[5] W. Tang, Y. Zhou, H. Zhu, H. Yang, The effect of surface texturing on reducing the friction and wear of steel under lubricated sliding contact, Appl. Surf. Sci. 273 (2013) 199-204. https://doi.org/10.1016/j.apsusc.2013.02.013