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All Journal Jurnal Mechanical Jurnal Pengabdian Nasional (JPN) Indonesia
Mohammad Ainul Yaqin, Mohammad Ainul
Jurusan Fisika Institut Teknologi Sepuluh Nopember
Engineering Environmental Science Industrial & Manufacturing Engineering Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Mechanical Engineering Social Sciences Other

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Hardness enhancement of Al-Si alloys from sand casting with runner variations Tsamroh, Dewi Izzatus; Ardiansyah, Mochammad Fachrizal; Yaqin, Mohammad Ainul; Shiddiqy, Taqiyyudin Ahmad As; Lubis, Didin Zakariya
JURNAL MECHANICAL Vol 15, No 2 (2024): JURNAL MECHANICAL
Publisher : Jurusan Teknik Mesin, Fakultas Teknik, Universitas Lampung

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

Abstract

Metal casting is one of the oldest and most efficient manufacturing techniques in producing metal components with complex shapes. One of the main challenges in the casting process is controlling the flow of molten metal so that it can fill the mold perfectly without producing defects. The channel in the casting mold is usually called a runner. The runner functions as a distribution channel for molten metal into the mold cavity. Optimal runner design settings are very important to prevent defects in the final product such as porosity, cold shut, and shrinkage. This study aims to identify the effect of runner shape variations on the quality of Al-Si casting. The method used in this study is a laboratory experimental method. The study began with preparing the tools and materials, the materials used in this study were used pistons. The piston melting temperature was carried out at 750°C. The results showed that the results of the cast product using a truncated cone-shaped runner (variation 1) were the best results. Macrostructural analysis showed that specimens in variation 1 had minimum casting defects and lower shrinkage compared to variation 2. Microstructural analysis showed that the cast product produced several phases. Meanwhile, the hardness number for specimen variation 1 reached 98 HRE.
Sosialisasi dan Pelatihan Pembibitan serta Pembudidayaan TOGA (Tanaman Obat Keluarga) di Desa Rambipuji, Kabupaten Jember Nayla, Maulidya Putri; Aulia, Donabella Shefa; Utomo, Wahyu Priyo; Yaqin, Mohammad Ainul; Jamila, Nur Lailatul; Azzahro, Elok Zakiya; Tyascahyani, Callysta Vindi; Pangaribowo, Dian Agung
Jurnal Pengabdian Nasional (JPN) Indonesia Vol. 5 No. 3 (2024): September
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat (LPPM) STMIK Indonesia Banda Aceh

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35870/jpni.v5i3.1075

Abstract

Rambipuji Village is one of the villages in Rambipuji Sub-district, Jember Regency, with the potential for medicinal plants (TOGA) cultivated by the community in their home gardens. However, several issues hinder the cultivation process of TOGA among the residents, including the limited variety of TOGA plants, the potential of TOGA being uncharted, and the cultivation not being done optimally and sustainably. The SEMILIR program emerges as a solution through outreach and training activities to enhance residents' understanding of TOGA seedling and cultivation. The research method used includes material presentation sessions, TOGA seedling practices, and concludes with a post-test to measure the target group’s understanding. The results of this program show a significant increase in understanding of TOGA seedling and cultivation among 22 participants, or 99.09% of the total participants. This activity not only provided new knowledge but also practical skills that can improve family health and nutrition quality. The program is essential to be sustained in the future, as it has the potential to raise public awareness about health.
Hardness enhancement of Al-Si alloys from sand casting with runner variations Tsamroh, Dewi Izzatus; Ardiansyah, Mochammad Fachrizal; Yaqin, Mohammad Ainul; Shiddiqy, Taqiyyudin Ahmad As; Lubis, Didin Zakariya
JURNAL MECHANICAL Vol 15 No 2 (2024): JURNAL MECHANICAL
Publisher : Fakultas Teknik, Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/mech.v15i2.5280

Abstract

Metal casting is one of the oldest and most efficient manufacturing techniques in producing metal components with complex shapes. One of the main challenges in the casting process is controlling the flow of molten metal so that it can fill the mold perfectly without producing defects. The channel in the casting mold is usually called a runner. The runner functions as a distribution channel for molten metal into the mold cavity. Optimal runner design settings are very important to prevent defects in the final product such as porosity, cold shut, and shrinkage. This study aims to identify the effect of runner shape variations on the quality of Al-Si casting. The method used in this study is a laboratory experimental method. The study began with preparing the tools and materials, the materials used in this study were used pistons. The piston melting temperature was carried out at 750°C. The results showed that the results of the cast product using a truncated cone-shaped runner (variation 1) were the best results. Macrostructural analysis showed that specimens in variation 1 had minimum casting defects and lower shrinkage compared to variation 2. Microstructural analysis showed that the cast product produced several phases. Meanwhile, the hardness number for specimen variation 1 reached 98 HRE.
Co-Authors Ardiansyah, Mochammad Fachrizal Aulia, Donabella Shefa Azzahro, Elok Zakiya Dewi Izzatus Tsamroh Dian Agung Pangaribowo Didin Zakariya Lubis Jamila, Nur Lailatul Nayla, Maulidya Putri Shiddiqy, Taqiyyudin Ahmad As Tyascahyani, Callysta Vindi Utomo, Wahyu Priyo