Studi Eksperimental: Hubungan Media Pendinginan Dengan Kekerasan Dan Struktur Mikro Aluminium Bekas Profil Dengan Metode Lost Foam Casting
Abstract
Abstract
This study aims to explore the relationship between the cooling medium and the hardness and microstructure of used aluminum profiles processed using the Lost Foam Casting (LFC) method. Results Hardness testing using the Rockwell A method was conducted, yielding hardness values of 19.08 HRA for water cooling, 20.03 HRA for oil cooling, and 19.03 HRA for air cooling. Rapid cooling media such as water or oil generally increase material hardness compared to air cooling; however, the specific order and magnitude of the differences may vary depending on material properties and the heat treatment parameters used. These hardness differences are related to microstructure: media with higher cooling rates (water and especially oil) tend to produce finer α-Al grains and a better distribution of the Al–Si phase, whereas air cooling allows for larger grains and higher porosity, resulting in slightly lower hardness.
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International Aluminium Institute. (2023). Aluminium Recycling: A Sustainable Approach. Retrieved from https://www.world-aluminium.org
Zhao, Y., Li, Q., & Wu, X. (2022). Optimization of Lost Foam Casting Process Parameters: A Review. Journal of Materials Processing Technology, 306, 117644. https://doi.org/10.1016/j.jmatprotec.2022.117644.
Singh, R., & Kumar, P. (2021). Effects of Cooling Media on Mechanical Properties of Cast Aluminium Alloys. Materials Today: Proceedings, 47(5), 3452–3459. https://doi.org/10.1016/j.matpr.2021.09.450
B. O. Adewuyi dan J. A. Omotoyinbo, "Effects of Cooling Media on the Mechanical Properties and Microstructure of Sand and Die Casting Aluminium Alloys," Journal of Science and Technology, vol. 28, no. 1, pp. 97–102, Apr. 2008.
Wang, H., Zhao, L., & Feng, J. (2021). Effects of Cooling Media on Microstructure and Properties of Aluminum Alloys. Metals, 11(3), 473. https://doi.org/10.3390/met11030473
Zhang, X., Li, M., & Zhou, Y. (2022). Innovative Cooling Media for Aluminum Recycling: A Comparative Study. Journal of Manufacturing Processes, 80, 456–468. https://doi.org/10.1016/j.jmapro.2022.01.023
Fatoni, M., Alfatah, R., Lubis, A. H., & Raharjo, M. (2021). Analisa pengaruh variasi media pendingin air, oli, dan udara terhadap nilai kekerasan baja karbon sedang hasil proses hardening. Jurnal Teknik Mesin, 10(2), 123-131.
DOI: https://doi.org/10.33387/josae.v9i1.11911
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