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All Journal KAPAL Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Rotasi Prosiding Seminar Nasional Sains Dan Teknologi Fakultas Teknik Jurnal Teknik Mesin Metal Indonesia JURNAL DINAMIKA VOKASIONAL TEKNIK MESIN Conference SENATIK STT Adisutjipto Yogyakarta Majalah Ilmiah Pengkajian Industri Jurnal Teknologi Terapan Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin JURNAL CRANKSHAFT Authentic Research of Global Fisheries Application Journal (Aurelia Journal) Scientific Journal of Mechanical Engineering Kinematika Quantum Teknika Abdi Masya Creative Research in Engineering (CERIE) Teknika ETAM: Jurnal Pengabdian kepada Masyarakat Jurnal Suara Pengabdian 45 Suara Teknik : Jurnal Ilmiah Jurnal Polimesin
Bambang Hari Priyambodo
Mechanical Engineering Department, Sekolah Tinggi Teknologi Warga Surakarta
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Optimization of Gear Sprocket Surface Hardness through a Combination of Ice Water Quenching and Shot Peening with Pressure Variations Priyambodo, Bambang Hari; Setiawan, Widia; Handoko; Palmiyanto, Martinus Heru Palmiyanto; Priyanto, Kaleb; Kurniawan, Yani
Teknobiz : Jurnal Ilmiah Program Studi Magister Teknik Mesin Vol. 16 No. 1 (2026): Teknobiz
Publisher : Magister Teknik Mesin Universitas Pancasila

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35814/nttrpa77

Abstract

The gear sprocket is a transmission system component that operates under repeated torsional and frictional loads, making its surface susceptible to wear. To improve wear resistance, a treatment is required to harden the surface layer without significantly altering its dimensions. This study aims to evaluate the effect of combining ice-water quenching and varying shot peening pressures on the surface hardness and microstructural changes of a medium carbon steel gear sprocket. The specimens were austenitized at 850 °C for 15 minutes and rapidly cooled using ice water. Subsequent shot peening was performed for 20 minutes using 0.6 mm diameter steel shots at pressures of 5, 6, 7, and 8 bar. Surface hardness was measured using the Vickers (HV) method, and microstructural observations were conducted with an optical microscope after 2% Nital etching to identify phase transformations. The results show that ice-water quenching increased the surface hardness from 199 HV to 329 HV, representing an increase of approximately 65% over the untreated condition. The combination of quenching and shot peening further enhanced hardness to 404 HV, 454 HV, 487 HV, and 552 HV at 5, 6, 7, and 8 bar, respectively, with the maximum improvement reaching 177% compared to the untreated specimen. Microstructural analysis revealed fine martensitic structures on the quenched surface and a plastically deformed layer produced by shot impacts. Therefore, the combination of ice-water quenching and shot peening effectively enhances surface hardness and refines the microstructure of gear sprockets, indicating its potential application in improving the transmission components wear resistance.
Co-Authors Abda Abda Abrori, M. Zaki Latif Agung Supriyanto, Agung Amida Tri Andani Angger Bagus Prasetiyo Atmoko, Nugroho Tri Awan, Sang Alang Chamim, Moch. Demeianto Bobby Edi Cahyono Enita, Sarai Erich Maliwemu, Erich Fattah, Rauuf Nur Felixtianus Eko Wismo Winarto Hafid Febriansah Handoko Haniel, Haniel Juniawan Preston Siahaan Kacuk Cikal Nugroho Karminto Karminto Karminto, Karminto Margono Margono Margono Margono Martinus Heru Palmiyanto Martinus Heru Palmiyanto Mega Lazuardi Umar Miftakhur Rohmah Mohamad Akmal Nanda Ariyadi Palmiyanto, Martinus Heru Palmiyanto Priyanto, Kaleb Priyo Tri Iswanto Rauuf Nur Fattah Reni Laili Rizqi Ilmal Yaqin Rizqi ilmal yaqin, Rizqi ilmal Ryan Dhana Dyaksa Ryan Dhana Dyaksa Setiawan, Widia Siahaan Juniawan Preston Sigiet Haryo Pranoto Subiyati Subiyati Sugeng Slamet Sugiyanto Sugiyanto Suhartoyo Suhartoyo Suhartoyo Suhartoyo Suhartoyo Suhartoyo, Suhartoyo Tumpu Mula Y. Yulianto Kristiawan Yani Kurniawan, Yani Yanti Pasmawati Yuniar Endri Priharanto