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Jurnal Gear : Energi, Perancangan, Manufaktur & Material
Published by Universitas Teknologi Sumbawa
ISSN : -     EISSN : 29881463     DOI : https://doi.org/10.36761/gear.v2i1.3674
Core Subject : Science, Engineering,
Energy Engineering Industrial & Manufacturing Engineering Mechanical Engineering
Jurnal GEAR berfokus pada kajian diantaranya adalah sebagai berikut: . Energi . Perancangan . Manufaktur . Material
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 3 Documents
 1 
Search results for , issue "Vol 2 No 2 (2024): Edisi 4" : 3 Documents clear
ANALISIS FLANGE MESIN DARI PROSES PENGECORAN PASIR Kelvin, Michael; Akbar Triatmojo, Kurnia; Musyaffa' Ma'shum, Yafi'; Arman, Rifqi; Ardiansyah Darmawan, Mohamad; Prasetyo Pangestu, Andika; Fadilah, Risky; Laila Sari, Shintya; Raharjo, Rudianto
Jurnal GEAR (Energi, Perancangan, Manufaktur & Material) Vol 2 No 2 (2024): Edisi 4
Publisher : Program Studi Teknik Mesin Fakultas Rekayasa Sistem Universitas Teknologi Sumbawa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36761/gear.v2i2.4058

Abstract

The Engine Flange is a crucial component in engines and engine systems, used to connect or mount the engine onto other structures or parts of vehicles. It serves as a strong and stable attachment point, allowing the engine to be securely and accurately positioned. The Engine Flange consists of two arms with matching holes to accommodate the propeller shaft. Engine Flanges can be produced through the metal casting process using sand molds (sand casting). The most commonly used material for making Engine Flanges is aluminum. Economically, sand casting is the most cost-effective method compared to others. There are many variables to consider in the metal casting process to obtain high-quality products with minimal defects. Therefore, process optimization is necessary to minimize defects that may occur during casting. Subsequently, metal casting simulations were performed using Altair Inspire Cast 2023 software to identify and compare the defects produced. The aim of this research is to compare actual casting results with simulations to identify defects in actual castings and simulation results. After the research, similar defects were found between the actual castings and simulation results, such as microporosity, porosity, shrinkage, mold erosion, and air entrapment. However, there were also other defects present in the actual castings, such as fins, sand inclusions, shrinkage, misruns, and swells.
PERANCANGAN MESIN PENGUPAS SABUT KELAPA DENGAN KAPASITAS 360 KG/JAM Purboyo, Sigit; Hidayat, Amri; Aldrin, Aldrin; Nuryadi, Halid
Jurnal GEAR (Energi, Perancangan, Manufaktur & Material) Vol 2 No 2 (2024): Edisi 4
Publisher : Program Studi Teknik Mesin Fakultas Rekayasa Sistem Universitas Teknologi Sumbawa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36761/gear.v2i2.4410

Abstract

In general, the process of peeling coconut coir still uses a manual process with amachete or crowbar so that it requires a lot of manpower with special skills, long time,and sharp tools to peel coconuts, This research aims to produce the design of a coconutcoir peeling machine, which can help in the process of peeling coconut coir and separatecoconut coir from coconut shells. The method used in this study is the Pahl Beitzmethod which consists of four stages. First, compile product technical specifications tomeet the needs of the community. Second, look for several product concepts in the formof sketches or simple schemes. Third, give shape to the product concept so that theelements can compose the shape of the product. Fourth, determine product details suchas the arrangement of elements, shape, dimensions, surface smoothness, and material.From the results of this study, it was obtained that the drive motor was selected with apower of about 3 HP with a speed of 2200 rpm. For the chain system and sprocket, a chain number of 40 with a single frame was chosen. With the shaft diameter selectedØ20 mm for the drive motor and Ø25 mm for the peeling roller. The calculation resultsshow that the production capacity of coconut fiber peeling is 360 kg/hour, taking intoaccount the number of coconuts per session (10 coconuts), with the average weight ofcoconuts (1.5 kg), and the peeling time per session for (2 minutes).
Pengaruh Preheating Terhadap Nilai Kekerasan Pada Pengelasan Baja Hardok 450 Menggunakan Metode Pengelasan Smaw nurkolis, dwi; Hidayat, Amri; Aldrin, Aldrin; Dzil Ikram, Fadhli
Jurnal GEAR (Energi, Perancangan, Manufaktur & Material) Vol 2 No 2 (2024): Edisi 4
Publisher : Program Studi Teknik Mesin Fakultas Rekayasa Sistem Universitas Teknologi Sumbawa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36761/gear.v2i2.4492

Abstract

Preheating is carried out by heating around the welding point, before welding begins, which is called the preheating temperature. Stabilizing the sample temperature before welding is intended to carry out preheating to prevent damage and defects during and after welding. The aim of this research is to determine the effect of preheating temperature on the hardness value of SMAW welding results on the hardness test on Hardok 450 steel. The welding carried out was the SMAW method on Hardok 450 steel using a 60? V seam connection. The preating temperatures used in this research were 200?C, 300?C and 400?C. The results of SMAW welding are subjected to hardness testing. From the results of the hardness testing, the hardness value increases as the preheating temperature increases. The lowest hardness value was obtained at a temperature of 200?C with an average hardness value of 68.2 HRC in the HAZ (Heat Affected Zone) area and an average value for weld metal of 64.6 HRC. Meanwhile, the highest hardness value was obtained at a temperature of 400?C, the average hardness value was 77.8 HRC in the HAZ area, while the hardness value for weld metal was 67.3 HRC

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