Analisa Pengaruh Variasi Suhu Dan Holding Time Pemanasan Induksi Terhadap Morfologi Dan Sifat Mekanik Baja Sup 9A
DOI:
https://doi.org/10.52158/jamere.v6i2.1601Keywords:
Pemanasan induksi, holding time, baja SUP 9A, kekerasan mikro, dekarburisasiAbstract
This study evaluates the effects of varying temperatures (850°C, 900°C, 950°C) and holding times (2, 7, 12 minutes) during induction heating on the microstructure, decarburization depth, and microhardness (Vickers) of SUP 9A spring steel. The experimental method involved induction heat treatment using combinations of these parameters, Vickers microhardness testing at 11 points per specimen, and microstructural analysis via metallographic microscopy at 500× magnification; data were analyzed descriptively and, where necessary, using the One-Way ANOVA statistical test. The results indicate that short holding times (2–7 minutes) maintained high hardness values (~323–327 HV) without significant decarburization, whereas a 12-minute holding time resulted in a significant decrease in hardness (~284–286 HV) accompanied by an increase in decarburization depth to 0.08–0.11 mm; the dominant microstructure remained ferrite-pearlite under the tested conditions.
References
Cao, H., Zhang, Y., Li, Z., & Wang, J. (2025). Condition-based maintenance strategies for industrial hydraulic systems. Reliability Engineering & System Safety, 244, 109911. https://doi.org/10.1016/j.ress.2024.109911
[2] Genie Industries. (2019). GS-1930 E-Drive service and maintenance manual. Terex Corporation.
[3] Mathura, P. (2024). Hydraulic fluid performance and system reliability in industrial machinery. Journal of Mechanical Engineering Science, 238(4), 2015–2030. https://doi.org/10.1177/0954406224123456
[4] Novaković, D. (2022). Visual inspection as an early warning method for hydraulic oil degradation. Tribology in Industry, 44(3), 489–501. https://doi.org/10.24874/ti.1058.08.21.07
[5] Orosnjak, M., Mraz, M., & Kral, S. (2020). Influence of hydraulic oil contamination on system reliability. Engineering Failure Analysis, 115, 104639. https://doi.org/10.1016/j.engfailanal.2020.104639
[6] Tshinavhe, M. P., Ramokgopa, G. M., & Maringa, M. (2024). Effects of fluid contamination on hydraulic system performance and maintenance cost. International Journal of Mechanical Engineering and Technology, 15(2), 45–58.
[7] Zhang, L. (2025). Hydraulic systems in modern lifting equipment. Springer Nature.
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Copyright (c) 2026 Fatmah Nuril, Ahmad Muqorrobin, Lisa Puspita Ariyanto, Merlyanalinda
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