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All Journal Prosiding Semnastek Turbo : Jurnal Program Studi Teknik Mesin JURNAL INTEGRASI Manutech : Jurnal Teknologi Manufaktur JTRM (Jurnal Teknologi dan Rekayasa Manufaktur) Journal of Telenursing (JOTING) jurnal syntax admiration Integrated Science Education Journal COMSERVA: Jurnal Penelitian dan Pengabdian Masyarakat Dulang: Jurnal Pengabdian Kepada Masyarakat Prosiding Seminar Nasional Inovasi Teknologi Terapan Jurnal Inovasi Teknologi Terapan Jurnal Teknologi Manufaktur dan Industri
Eko Yudo
Politeknik Manufaktur Negeri Bangka Belitung
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Computer Science & IT Control & Systems Engineering Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Health Professions Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Mathematics Mechanical Engineering Nursing Social Sciences Other

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Journal : Integrated Science Education Journal

 1 
Effect of Heat Treatment and Tempering Process on the Hardness of S55c Steel as A Cutting Blade Material for Plastic Shredding Machines Yudo, Eko; Ariyanto, Ariyanto; Erwansyah, Erwansyah; Suzen, Zaldy Sirwansyah; Sugiyarto, Sugiyarto; Dharta, Yuli; Zulfitriyanto, Zulfitriyanto
Integrated Science Education Journal Vol 7 No 1 (2026): January
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Purpose of the study: This study aims to optimize the heat treatment process of S55C medium-carbon steel by examining the combined effects of austenitizing temperature, quenching media, and tempering temperature on impact toughness. Methodology: An experimental approach was employed using quenching and tempering treatments. Quenching was performed at three austenitizing temperatures (950°C, 1000°C, and 1050°C) with three different cooling media—salt water, oil, and seawater—followed by tempering at 100°C, 200°C, 300°C, and 400°C. All heating processes were conducted in an electric furnace. Parameter optimization was carried out using the Taguchi method with an L9 orthogonal array. Mechanical performance was evaluated through Charpy impact testing, and confirmation experiments were conducted to validate the optimal parameter combination. Main Findings: The Taguchi analysis identified the optimal quenching condition at an austenitizing temperature of 1050°C with salt water as the cooling medium, yielding the highest impact toughness. Confirmation tests supported the reliability of this result. Additionally, the tempering process showed that increasing the tempering temperature decreased hardness while significantly improving toughness, indicating effective stress relief and improved ductility in the steel microstructure. Novelty/Originality of this study: The novelty of this study lies in the integrated optimization of quenching temperature and diverse cooling media, including seawater, using the Taguchi method, with a specific focus on toughness rather than hardness alone. This research provides new insights into tailoring heat treatment parameters for S55C steel to achieve superior impact resistance, offering practical guidance for more efficient and application-oriented heat treatment strategies in manufacturing industries.
Cooling Media–Driven Shift in Dominant Machining Mechanisms: A Taguchi-Based Optimization of Surface Roughness in CNC Milling of S45C Steel Faing, Fatullah; Yudo, Eko; Kurniawan, Zaldy
Integrated Science Education Journal Vol 7 No 1 (2026): January
Publisher : Cahaya Ilmu Cendekia Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37251/isej.v7i1.2643

Abstract

Purpose of the study: Is to optimize the surface roughness in CNC milling of S45C steel using two types of cooling media: Dromus and radiator water. Methodology: This study employed the Taguchi experimental design method to compare cooling media. Three main machining parameters, namely spindle speed, depth of cut, and feed rate, were examined at three levels using a Taguchi L9 orthogonal array. In addition, two different cooling media, namely radiator water and Dromus, were applied to investigate their effects on surface integrity. Surface roughness values ​​were measured using a standard surface roughness tester and analyzed using the Signal-to-Noise (S/N) ratio, with the results supported by Analysis of Variance (ANOVA). Main Findings: The results demonstrate that cooling media play a decisive role not only in reducing surface roughness but also in shifting the dominant machining parameter. Under radiator water cooling, spindle speed was the most influential factor, contributing 45.67% to surface roughness variation. In contrast, when Dromus was applied, depth of cut became the dominant parameter with a contribution of 63.40%. Dromus consistently produced lower surface roughness values and higher S/N ratios, indicating improved thermal control and process stability. The optimal machining condition was identified at a spindle speed of 1910 rpm, a depth of cut of 0.2 mm, and a feed rate of 330 mm/min. Novelty/Originality of this study: The novelty of this study lies in revealing how cooling media fundamentally alter surface formation mechanisms and parameter dominance, offering new insights for adaptive and efficient CNC milling optimization strategies.
Co-Authors Adam Maulana Adha, Adha Adhe Anggry Aisyah, Ratu Angga Satria Angga, Muhammad Angga Pratama Ariyanto Ariyanto Ariyanto, Aariyanto Arya Danutirta Bimas E Saputra Dersi Julianto Dharta, Yuli Dimas putra utama Eko Sulistyo Erni Chaerani Erwansyah Erwansyah Erwansyah, Erwansyah Fadel Ramiro Fahrizal Fahrizal Faing, Fatullah Fathur Rohman, Fathur Febriyansa, Agus Feriadi, Indra Finofal, Afgi Gilbran, Adin Husman Husman Husman, Husman ibnu salikin Idiar Ikhya Naufal Izdihar Hirzani Jondi Supriyandi Khairun Nisah mahdan, zio eldi Mahendra, Anan Mar'i Akbar, Firzan Muhamad Fikri Burli Muhammad Haritsah Amrullah Muhammad Reza Mukhib Muhammad Yunus Nanda Pranandita Nicola, Adyu Nicola, Adyu Arya Nugraha, Amelia Oktafia Odidio Pratama Odidio Oktriadi, Yudi Pernanda, Gustian Ramli Ramli Ridho Rosmansyah Rina Melati Robert Napitupulu S Suzen, Zaldy Saputra, Aldi Yusuf Sateria, Angga SUBHAN, MUHAMAD Sugiyarto Sugiyarto Sugiyarto Sugiyarto Sugiyarto Sugiyarto Sukanto Sukanto Sunding, Alang Suzen, Zaldy Sirwansyah Trisna Fitri Mutiari widyaastuti, eny erlinda yanto, Zulfitri Yuliyanto Yuliyanto Yuliyanto Zakdi Sirwansyah Suzen Zaldy Kurniawan Zulfitriyanto, Zulfitriyanto