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All Journal JURNAL KAJIAN TEKNIK MESIN Quantum Teknika ARMATUR : Artikel Teknik Mesin dan Manufaktur Scientica: Jurnal Ilmiah Sains dan Teknologi
Dirja, Iman
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Rancang Bangun Mesin Extruder Plastik Nurzaman, Runo; Noubnome, viktor; Dirja, Iman
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 5 No. 1 (2024): Jurnal Armatur
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/armatur.v5i1.5090

Abstract

This research explores the potential of a plastic extruder machine as a solution to address plastic waste by utilizing high temperatures to melt and form plastic blocks. The machine aims to determine the optimal temperature for the production of plastic pellets. Despite initially producing plastic liquid, the machine is expected to effectively reduce plastic waste. The machine specifications involve an electric motor, gearbox, melting furnace, intake, melting spiral, output, pulley, and V-belt. Analysis of electric motor planning determines the required power. Gearbox planning involves gearbox ratio and required torque. Planning for pulleys and V-belts is conducted to transmit power from the motor to the machine's drive system. Planning for shafts and bearings was also carried out. The plastic extruder machine holds promise as a significant solution for plastic waste recycling. The manufacturing cost of the machine is found to be Rp17,349,350 and can be further reduced with a more optimal design. Recommendations for future research include enhancing detailed analysis and utilizing a richer set of references.
Analisis Pengaruh Ketebalan dan Tipe Elektroda terhadap Tegangan dan Faktor Keamanan pada Sambungan Las Pipa Mulyana, Mulyana; Al Adhim, Rizqi; Oleh, Oleh; Dirja, Iman
ARMATUR : Artikel Teknik Mesin & Manufaktur Vol. 5 No. 2 (2024): ARMATUR: Artikel Teknik Mesin dan Manufaktur
Publisher : Universitas Muhammadiyah Metro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24127/armatur.v5i2.5881

Abstract

Welded joining is a process of joining two or more similar metals by melting the area around the weld so that the metallurgical bonding of the weld metal occurs. In welding with filler metal, metals that have the same characteristics as the base metal are generally used. For welding thick pipes, notches and gaps are always made so that the filler metal can fill the area. The amount of filler metal will affect the strength of the weld. From the experimental results using E60xx and E70xx electrodes at a combined pressure of 60 bar, it gives good welding results at 1 mm filler filling. This result is in accordance with what is recommended by ASME.
ANALISA PENGARUH VARIASI TIPE MEDIA PENDINGINAN PADA PENGECORAN PISTON TERHADAP KEKERASAN DAN STRUKTUR MIKRO W, Dewangga Arditiyan; Hanifi, Rizal; Dirja, Iman
JURNAL KAJIAN TEKNIK MESIN Vol 8, No 2 (2023): Jurnal Kajian Teknik Mesin
Publisher : Universitas 17 Agustus 1945 Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.52447/jktm.v8i2.7107

Abstract

AbstrakDalam industri manufaktur, proses pengecoran digunakan secara luas untuk pembuatan komponen logam kompleks, salah satunya piston. Pengecoran piston yang baik sangat penting untuk memastikan kualitas dan performa yang optimal. Salah satu faktor penting dalam proses pengecoran piston adalah media pendinginan yang digunakan. Media pendinginan memiliki peran yang signifikan dalam mengatur laju pendinginan dan membentuk struktur mikro pada piston. Oleh karena itu, analisa pengaruh variasi tipe media pendinginan pada pengecoran piston perlu dilakukan untuk memahami efeknya terhadap kekerasan dan struktur mikro piston. Tujuan dilakukannya penelitian ini adalah untuk mengetahui pengaruh media pendinginan terhadap kekerasan dan struktur mikro pada pengecoran piston. Hasil penelitian menunjukkan bahwa pada media pendinginan udara menghasilkan nilai kekerasan sebesar 56,1 HR, lalu pada media pendinginan air menghasilkan nilai kekerasan sebesar 59,2 HR, dan pada media pendinginan oli menghasilkan nilai kekerasan sebesar 59,7 HR. Ini menunjukkan bahwa media pendinginan oli menghasilkan tingkat kekerasan yang lebih tinggi dibandingkan dengan media pendinginan yang lainnya.Kata kunci: Pengecoran, Variasi Media Pendinginan, Quenching, Aluminium-SilikonAbstractIn the manufacturing industry, the casting process is widely used for producing complex metal components, one of which is the piston. Proper piston casting is crucial to ensure optimal quality and performance. One significant factor in the piston casting process is the cooling media used. Cooling media play a significant role in controlling the cooling rate and shaping the microstructure of the piston. Therefore, an analysis of the effect of various types of cooling media in piston casting is necessary to understand their impact on the hardness and microstructure of the piston. The purpose of this research is to investigate the influence of cooling media on the hardness and microstructure in piston casting. The research results indicate that using air as the cooling media results in a hardness value of 56.1 HR, while using water as the cooling media produces a hardness value of 59.2 HR. Additionally, using oil as the cooling media yields a hardness value of 59.7 HR. This indicates that the oil cooling media produces a higher level of hardness compared to the other cooling media.Keywords: Casting, Cooling Media Variation, Quenching, Aluminum-Silicon
ANALISIS GEOMETRIK KERATAAN PADA PRODUK MESIN MILLING CNC PROTOTYPE 3 AXIS Dailimi, Amad; Oleh, Oleh; Dirja, Iman
Scientica: Jurnal Ilmiah Sains dan Teknologi Vol. 3 No. 1 (2024): Scientica: Jurnal Ilmiah Sains dan Teknologi
Publisher : Komunitas Menulis dan Meneliti (Kolibi)

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

Abstract

Mechanical and control system capable of reading N, G, F, T, and other code instructions. The codes will be instructed to the CNC machine interface system, so that the machine can work in accordance with the program listings that have been made. In general the selling price of this machine is still very high. Therefore, in this study designed a CNC machine with low cost which is intended for small and medium enterprises (SMEs). This CNC milling assembly machine has 3 axes that is X, Y and Z axis. In this research, the CNC milling 3 axes machine is consists of several important components such as guide ways, transmission system, driver and controller. These components are widely available in the market. CNC milling machine has dimensions size of machine length of 700 mm x width of 600 mm x height of 1227 mm. the CNC milling machine 3 axes has advantages that can make several types of wood carving products and acrylic. The results of the test where obtained accuracy of CNC milling 3 axes machine for Y axis that was 0.1946 mm and for X axis of 0.2463 mm.
Analisa Pengaruh Preheating dan Post Weld Quench terhadap Kekuatan dan Struktur Mikro Baja S45C dengan Pengelasan Shielded Metal Arc Welding Rachman, Arif; Dirja, Iman; Setiawan, Reza
Quantum Teknika : Jurnal Teknik Mesin Terapan Vol. 6 No. 2 (2025): April
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jqt.v6i2.23046

Abstract

In many industrial contexts, steel is an everyday material. The technique of attaching metal parts using heat energy, known as welding, is something we encounter often; S45C is one of several steels that are used in machine construction. Protected metal arc welding is one type of welding that we come across frequently. Unwanted metallurgical changes, deformation, or residual stress in the base metal might occur as a consequence of uneven or excessive heating. A better method is to heat it up beforehand, often known as preheating, before welding. Determining the effect of preheating on the hardness of S45C steel during welding is one of the primary aims of this study. (2) to understand how changes in temperature and time affect the microstructure of S45C steel during welding and how it affects the final product. (3) ascertain the effect of temperature and duration on the resulting hardness of S45C steel welding. During the preheating procedure, the temperature is varied between 160 and 260 degrees Celsius, and the waiting periods are 7, 15, and 20 minutes, respectively. Hardness and microstructure testing, also known as metalografy, is performed on S45C steel after shielded metal arc welding (SMAW) to ascertain the degree of hardness and microstructure of the steel.
Co-Authors Al Adhim, Rizqi Arif Rachman Dailimi, Amad Hanifi, Rizal Mulyana Mulyana Noubnome, Viktor Nurzaman, Runo Oleh, Oleh Reza Setiawan W, Dewangga Arditiyan