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All Journal KAPAL Jurnal Ilmu Pengetahuan dan Teknologi Kelautan Jurnal Rekayasa Sistem Industri SITEKIN: Jurnal Sains, Teknologi dan Industri JMPM (Jurnal Material dan Proses Manufaktur) Conference SENATIK STT Adisutjipto Yogyakarta KACANEGARA Jurnal Pengabdian pada Masyarakat Adimas : Jurnal Pengabdian Kepada Masyarakat Jurnal Teknologi Terapan Authentic Research of Global Fisheries Application Journal (Aurelia Journal) DEDIKASI PKM International Journal of Innovation in Mechanical Engineering and Advanced Materials Electrician : Jurnal Rekayasa dan Teknologi Elektro Suara Teknik : Jurnal Ilmiah Jurnal Polimesin
Rizqi ilmal yaqin, Rizqi ilmal
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Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

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Journal : Jurnal Polimesin

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Enhancement of surface hardness and roughness of HQ 805 steel using diamond-like carbon coating deposited by PVD Pakpahan, Binsar Maruli Tua; Yaqin, Rizqi Ilmal; Waluyo, Bakti Dwi; Zulfikram, Zulfikram; Mendoza, Muhammad Dominique
Jurnal Polimesin Vol 23, No 3 (2025): June
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v23i3.6166

Abstract

Diamond-Like Carbon (DLC) coatings are well-regarded for their high hardness, low friction coefficient, and excellent wear resistance, making them suitable for enhancing surface properties in demanding industrial applications. This study aims to analyze the effect of DLC coating on HQ 805 steel, focusing on improvements in surface hardness and surface roughness. HQ 805 steel, which is known for its mechanical durability, was coated using the Physical Vapor Deposition (PVD) method to achieve a uniform and adherent thin film. Hardness was evaluated using the Vickers microhardness test, while surface roughness was measured with a profilometer. Results showed a significant increase in surface hardness, with the coated samples achieving up to 798 VHN. It represented a 25–30% increase compared to the uncoated steel at 355 VHN. Surface roughness exhibited only a slight increase (5–7% Ra), indicating the thin layer and uniform deposition achieved with DLC without adversely affecting the surface finish. These results confirm that PVD-applied DLC coatings can effectively enhance the mechanical surface performance of HQ 805 steel without compromising surface quality. The optimal coating condition was found at 400°C for 4 hours. This research shows the potential application of DLC-coated HQ 805 steel in high-wear industrial environments extending component service life and improving operational efficiency.
Performance test of small fishing vessel refrigeration machine for fish storage Siahaan, Juniawan Preston; Yaqin, Rizqi Ilmal; Demeianto, Bobby; Tumpu, Mula; Abrori, Muhammad Zaki Latif; Priharanto, Yuniar Endri; Pradana, Syahrul
Jurnal Polimesin Vol 21, No 6 (2023): December
Publisher : Politeknik Negeri Lhokseumawe

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30811/jpl.v21i6.4165

Abstract

The refrigeration system in the fishing process is important for maintaining the quality of the catch. However, the design of small-scale refrigeration machines is still not common, so it is an interesting study. Therefore, this study aimed to evaluate the design of small-scale fishing vessel refrigeration machines. Field studies are needed in machine manufacturing to observe the components required to match the refrigeration machine components onboard fishing vessels. This uses a direct observation method to determine the components of the refrigeration machine on the ship. Furthermore, the performance of the machines produced will be tested through the load cooling process. Parameters determined in the performance test include monitoring temperature (suction and discharge), pressure (suction and discharge), evaporator temperature, load temperature, COP (Coefficient of Performance), and compressor power. Refrigerant temperature measurement uses an insulative principle so that ambient temperature does not affect it. The result is that the machine produced has a capacity of 35 l or 15 kg of load. Meanwhile, in the performance test, the COP and electrical power generated while cooling the load for approximately 4 hours were 2,42 and 507 W, respectively. The results of this design were successful and did not experience failure. The significanceof this study can be used as a reference source for making cooling machines for storing the catch of small-scale fishermen.
Co-Authors Abrori, M. Zaki Latif Ade Hermawan Agung Prakoso Agung Supriyanto, Agung Alip, Ahmad Amrullah, Muhammad Haritsah Andinusa Rahmandhika Arianto, Didin Arif Pambekti Aswin, Fajar Bakti Dwi Waluyo Bambang Hari Priyambodo Darmawan Darmawan Demeainto, Bobby Demeianto, Bobby Djunaidi Djunaidi Erich Maliwemu, Erich Fakhrudi, Yoga Ahdiat Fattah, Rauuf Nur Febi Luthfiani, Febi Firnando, Aldo Gunawan, Frans Ardhy HARIADI, AGUNG Haris, Rangga Bayu Kusuma Hasdiansah, Hasdiansah Lagsmana, Tegar Margono Margono Mega Lazuardi Umar Mendoza, Muhammad Dominique Muhammad Nur Arkham Nugroho, Setyawan Dwi Okto Dinaryanto Pakpahan, Binsar Maruli Tua Pamaharyani, Luchiandini Ika Pradana, Syahrul Prakoso, Bagas Priharanto, Yuniar Endri Pristiansyah, Pristiansyah Priyo Tri Iswanto Pujianto, Andreas Saharuddin Septianda, Devin Siahaan, Juniawan Preston Sigiet Haryo Pranoto Sirait, Egbert Josua Sugeng Slamet Tumpu, Mula Zein, Lukman Adria Saputra Zulfikram, Zulfikram