Rekayasa Mekanika: Jurnal Ilmiah Teknik Mesin

PROSES PERLAKUAN PANAS UNTUK MELURUSKAN MATERIAL H- BEAM DENGAN METODE FIRING

2024-12-26T05:27:55+00:00

Welded beam merupakan profil yang diperoleh dengan cara mengelas 3 lembar plat yang terdiri dari 2 buah plat flange dan 1 buah plat web yang dibentuk menjadi profil I-Beam atau H-Beam. Proses pengelasan dilakukan dengan mesin las khusus SAW dan dilanjutkan dengan proses pelurusan karena panas dari hasil pengelasan menyebabkan profil las beam menjadi bengkok atau pun terpuntir. Akibat adanya panas pada saat pengelasan maka terjadilah ukuran las beam yang minimal dan ketebalan plat yang minimal tersebut tidak dapat diluruskan lagi pada saat proses pelurusan karena titik leleh material sudah melebihi batas pada saat proses pengelasan. Pembakaran merupakan proses pembakaran material pada suhu tertentu dengan maksud untuk memperbaiki dimensi material tersebut. Tujuan dari penelitian ini adalah untuk meluruskan baja H-Beam. Dalam melakukan proses pembakaran menggunakan alat dan material seperti mesin Huawei CG1-30, kapur tulis, penggaris siku-siku, nitrogen dan gas serta perlengkapan K3, dalam melakukan proses pembakaran dilakukan pengecekan dengan menggunakan penggaris siku-siku dan penentuan titik bakar pada baja H-Beam, kapur tulis digunakan untuk mengukur suhu pada proses pembakaran. Proses pembakaran memiliki Kesimpulan dari penelitian ini adalah proses perlakuan panas (pembakaran) dapat meluruskan baja H-Beam menggunakan mesin Huawei CG1-30 yang memiliki kecepatan 50-750 mm/menit.

ANALISIS TEKANAN HIDROLIK TERHADAP OIL LOSSES PADA MESIN PRESS KAPASITAS 15 TON

2024-12-29T11:08:29+00:00

Dalam proses produksi pengolahan kelapa sawit terdiri dari lima proses sterilizer, Tresher, Digester, Pressing, dan klarifikasi. Dalam proses pengolah ini proses pressing merupakan salah satu yang paling penting. Mesin press merupakan mesin yang digunakan untuk memisahkan minyak kasar dari serat-serat dalam daging buah dan pada mesin press juga mempunyai komponen penekan atau biasa disebut dengan cone cage yang digerakan oleh mekanisme hidrolik. Proses pengepressan minyak kelapa sawit merupakan salah satu bagian penting yang menjadi faktor standart keberhasilan dalam pengolahan tandan buah segar (TBS) karena di dalam proses ini lah banyak kehilangan hasil minyak dan salah satu faktornya adalah nilai dari tekanan hidrolik. Penelitian ini bertujuan untuk mengetahui pengaruh nilai tekanan hidrolik terhadap oil losses in fiber pada setiap mesin press dan juga mengetahui bagaimana cara mesin press tersebut bekerja. Untuk mengetahui variable dari tekanan hidrolik dan nilai oil losses in fiber dilakukan dengan metologi pengamatan yaitu dengan mengamati preasure gauge pada setiapa mesin press dan untuk untuk oil losses in fiber dilakukan dengan pengujian pada lab pabrik. Dengan data tersebut maka akan dibandingkan antara dua data tersebut. Hasil dari penelitian ini adalah tekanan hidrolik berpengaruh signifikan terhadap nilai oil losses pada serat dalam mesin press. Dengan tekanan hidrolik 49 bar diperoleh oil losses terkecil sebesar 3,28%, sementara pada tekanan hidrolik 40 bar diperoleh oil losses tertinggi yaitu 4,42% . Hal ini menunjukkan bahwa semakin tinggi tekanan hidrolik, semakin kecil nilai oil losses yang terjadi, dan sebaliknya.

DESAIN DASAR MESIN INJECTION MOLDING UNTUK PROSES CASTING SAMPEL PROPELAN PADAT MENGGUNAKAN SOFTWARE SOLIDWORKS

2024-12-31T10:14:32+00:00

The injection molding machine for the solid propellant sample casting process is a tool for making a sample in the form of a solid propellant sample plate, this tool is designed to make work easier when carrying out the process of making solid propellant samples. The needs of the propellant industry in Indonesia are very large and important considering the need to develop solid propellant samples and munitions for the national arsenal, namely to promote and facilitate the exchange of technical information and programs. itself consists of two molds with sizes, namely 25cm diameter, 10cm high and 17cm diameter, 5cm high, frame, cember, hydraulic. The most important component in solid propellant sample injection molding is the solid propellant sample mold. Therefore, it must be strong and sturdy to hold the solid propellant sample so that it does not come out during printing with hydraulic pressure.
The manufacture of solid propellant injection molding was assisted with Solidwork Software in this research.
Keyword: Rocket, Propellant, injection molding.

PROSES PRODUKSI AMBENG STOOL HIJAU SAGE BERBAHAN DASAR PLASTIK JENIS HDPE (High-density polyethylene) DI ROBRIES (PT. Siklus Karya Global)

2024-12-23T06:59:00+00:00

The manufacturing process is an activity or production process that transforms raw materials into finished goods. To accelerate production, the manufacturing process utilizes modern equipment such as machines and implements structured programs to carry out production. The purpose of this internship is to understand the procedures for making the sage green Hambeng Stool, determine the optimal plastic melting time, and identify the factors influencing product defects at ROBRIES (PT. Siklus Karya Global). Raw materials are modified through manufacturing processes to form the necessary components. To produce the desired product, several stages must be followed. In its production, the manufacturing process requires machining stages. The manufacturing process begins with designing the product and determining the material specifications for the product. The methods used in this research include literature review, observation, and interviews. This is because the desired product cannot be produced through a single machining process. The production process at ROBRIES complies with the standard operating procedures (SOP), starting with material selection, material melting, material sanding, and finishing.

Keywords: Manufacturing Process, Robries, Hambeng Stool

DESAIN DAN PEMBUATAN HAND LOADER OUTPUT DENGAN MENGGUNAKAN SOFTWARE SOLIDWORKS

2024-12-30T03:39:31+00:00

Pneumatic transfer system (PTS). Hand Loaders, Solidworks.

ANALISA DISTRIBUSI TEMPERATUR INTERMEDIATE TANK FASSIP-07 MENGGUNAKAN METODE COMPUTATIONALFLUID DYNAMICS (CFD)

2025-01-15T15:26:24+00:00

Penelitian ini bertujuan untuk memahami distribusi temperatur pada sistem sirkulasi alami di Intermediate Tank FASSIP-07 menggunakan metode Computational Fluid Dynamics (CFD). Simulasi dilakukan menggunakan software Ansys Workbench R1 2024, dengan variasi temperatur inlet sebesar 70°C, 80°C, dan 90°C. Hasil penelitian menunjukkan bahwa distribusi temperatur tertinggi ditemukan pada bagian inlet dengan suhu 90°C, sementara bagian outlet mencapai suhu terendah pada 70°C. Kesimpulan ini diperoleh dari analisis aliran fluida yang didorong oleh fenomena buoyancy akibat perbedaan densitas. Penelitian ini menunjukkan potensi penggunaan sistem pendingin pasif untuk reaktor nuklir guna meningkatkan keamanan dalam kondisi darurat.

Keywords: CFD, Distribusi Temperatur, FASSIP-07, Ansys, Sistem Pendingin Pasif, Reaktor Nuklir

Rancang bangun dan analisa trial and eror prosthethic servo power handa

2025-01-16T08:08:15+00:00

Prosthetic hands are designed to help people with disabilities work. This research aims to make a prosthetic
hand using a 3D printing machine with a focus on using Solidworks software for model design, Ultimaker Cura
software for slicing printing in the form of G-Code, and filler material in the form of PLA filament. The main
components used involve a servo motor (MG996), Arduino Uno, and breadboard. This research focuses on
making designs using solidworks, using servo motors (MG996), and using PLA filament material. The data
collection process is divided into three stages: design creation, G-code creation, and printing, as well as the data
collection process which involves trial and error on the prosthetic hand. The results of this research show that
although in general all the fingers of the prosthetic hand can move, there are some fingers that experience
problems following program commands. Factors such as design, manufacturing defects, hinges, and connecting
straps between the servo motor and the finger affect the movement of the prosthetic hand's fingers. Although
some fingers can move well, there are also those who experience difficulty in movement.

PREVENTIVE MAINTENANCE PADA COAL PREVENTIVE MAINTENANCE PADA COAL MILL (PULVERIZER)

2025-03-02T15:12:19+00:00

Steam Power Plants (PLTU) play a strategic role in meeting Indonesia's electricity needs, particularly through the utilization of coal as the primary energy source. This report focuses on the analysis of preventive maintenance applied to the Coal mill (pulverizer) Unit 2 at PLTU Keban Agung, Lahat, aiming to prevent damage and enhance operational efficiency. The MPS-160 HP type mill is used to grind coal into micro-sized particles suitable for combustion.Preventive maintenance procedures include routine tasks such as visual inspections, lubrication, cleaning, and tightening of components. During the process, issues such as hydraulic pipe leaks and other component malfunctions were identified and promptly addressed to prevent further impact. Preventive maintenance has proven effective in minimizing the risk of unplanned downtime, supporting sustainable production, and improving PLTU efficiency. The operational principle of the Coal mill (pulverizer) involves grinding coal between a grinding roller and a grinding table, aided by airflow from the Primary Air Fan to produce coal powder with a 200-mesh size, ready for combustion in the burner. In conclusion, preventive maintenance is essential for maintaining equipment performance, reducing potential damage, and ensuring smooth PLTU operations.

Keywords: Preventive Maintenance, PLTU Priamanaya Energi, Coal mill (pulverizer)

ANALISA KEKUATAN STRUKTUR WALKING BEAM PADA SUCKER ROD PUMP MENGGUNAKAN METODE SIMULASI NUMERIK FINITE ELEMENT ANALYSIS

2025-03-20T00:42:27+00:00

Sucker Rod Pump are a technology that has been used for a long time in the petroleum mining industry and proven effective in lifting oil from wells that have low flow rates. One of the companies in Indonesia which still produces Sucker Rod Pump is PT. Bukaka Engineering Utama Tbk. Sucker Rod Pump is a tool that used to raise petroleum from the well to the ground surface. In a Sucker Rod Pump there are several main components, namely the Walking Beam, Horse Head, Samson Post, Crank, Counter Weight, Pitman, Equalizer, Gear Box, electric motor and V-Belt. Walking Beam is a very component has a big influence on the performance of the Pumping Unit, in this case Walking The beam on the Pumping Unit must be appropriate in terms of strength, durability and... security, this is intended to obtain effective, maximum performance. On During the design process, the Walking Beam was designed using software solidworks 2024. The material used is ASTM A36 Steel Plate, with dimensions 5000mm long, 617mm high and 200mm wide. This Walking Beam analyzed using Solidworks 2024 Software. In the Von Misses stress test, it is obtained The maximum stress result is 76,756 MPa. While the minimum voltage found on the base plate is 0.222 Mpa. For the results of the simulation The maximum displacement value obtained is 2,550 mm for color red and a minimum displacement of 41.498 mm which is indicated by blue. Lastly, safety factor testing was carried out where the results were obtained The maximum safety factor is 1,126.43 on the base plate. Meanwhile numbers The minimum security is in the blue section, namely 0.003. From the results analysis obtained, it can be seen that the Walking Beam was used it's not safe. In the analysis process the author only uses value obtained from calculating the lifting force, object mass, well volume, and the weight of the load used (ignoring the weight of the Equlizer, Pitman, Crank, and power from the gear reducer). This is done to find out what are the conditions when the Walking Beam is operating to lift fluid from At the bottom of the well then there was a problem with the drive motor.

DESAIN DAN ANALISIS CASE LINFLOW WATER METER DENGAN MENGGUNAKAN METODE CAD

2025-02-08T07:56:30+00:00

Linflow Water Meter is a smart technology-based water consumption meter designed to improve accuracy and efficiency in water resource management, both in the household, commercial, and industrial sectors. To protect the sensitive components inside and ensure the durability of the tool in a wide range of environmental conditions, a reliable case design is required. This study aims to design and analyze the Linflow Water Meter casing by considering the aspects of pressure resistance, protection against moisture and temperature, as well as conducting static and thermal analysis to evaluate the structural integrity and performance of the water meter, ensuring that it meets industry standards for efficiency and durability. The methodology used includes the selection of materials that are resistant to stress and corrosion, the design of ergonomic casing structures, and durability simulations using the Finite Element Analysis (FEA) method. The results of the analysis show that the high-quality polymer material with the addition of an anti-corrosion coating provides optimal protection for the operational environment. In addition, the modular design of the case makes it easy to install and maintain without affecting the integrity of the device. These findings are expected to improve the design process and operational reliability of water meters, thereby supporting effective drainage management and infrastructure protection.