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Jurnal Engine: Energi, Manufaktur, dan Material
Published by Universitas Proklamasi 45 Yogyakarta
ISSN : 25797433     EISSN : 25797433     DOI : http://dx.doi.org/10.30588/jeemm
Core Subject : Science, Engineering,
Control & Systems Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
Jurnal Engine: Energi, Manufaktur, dan Material is registered with ISSN 2579-7433 (online) on The Indonesian Institute of Sciences (LIPI). This journal is under publishment of the Mechanical Engineering Department, Universitas Proklamasi 45 Yogyakarta. It is a scientific journal focusing on Energy, Manufacturing, Material, Mechanical, and Software Simulation. It provides a publishing platform for scientists and academicians to share, publish, and discuss all aspects of the latest outstanding development in the field of Mechanical Engineering.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 140 Documents
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Rancang Bangun Alat Pelurus Puncher Bar Wahab, Abd.; Hamarung, Mukhlis A.
Jurnal Engine: Energi, Manufaktur, dan Material Vol. 8 No. 1 (2024)
Publisher : Proklamasi 45 University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30588/jeemm.v8i1.1816

Abstract

Round bar material with a diameter of 25,4mm is a type of material commonly used in the field of building construction and machinery spare parts. At PT. Vale Indonesia Tbk., this material is fabricated according to its design, which is called a puncher bar. A puncher bar is a tool used to clean the tuyere hole from nickel matte blockages in the PT converter section. Vale Indonesia. A series of cleaning processes can cause the puncher bar to bend at the ends or in the middle. The bent puncher bar was straightened manually in the production workshop of the Soroako Technical Academy. The process of straightening the puncher bar manually is considered less effective in terms of safety, time efficiency and worker productivity. The design of this machine consists of several components, namely the machine frame, electric motor, speed reducer, gears, towing roller, and towing roller. The stages of making a machine start from design, manufacturing, assembly, and testing. The puncher bar straightening machine has dimensions of 930 mm x 702 mm x 1129 mm with a main drive of a 5.5 HP electric motor with 1440 rpm. Vee belts and gears as rotation transmitters. The towing roller uses AISI 4140 alloy steel with a diameter of 5 inches and the guide roller uses mild steel with a diameter of 4 inches. This machine can straighten puncher bars with a maximum bend of 6 cm with a final bend of 1.5 cm with a processing time of 1 minute
Analisis Re-Layout Line Machining Oil Separator dengan Metode Value Stream Mapping dalam Meningkatkan Efisiensi Produktivitas di PT Astra Otoparts Divisi Nusametal Rasyid, Adji Nur; Hendaryanto, Ignatius Aris; Setiawan, Widia; Winarno, Agustinus
Jurnal Engine: Energi, Manufaktur, dan Material Vol. 8 No. 2 (2024)
Publisher : Proklamasi 45 University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30588/jeemm.v8i2.1848

Abstract

The Oil Separator is a part produced by PT Astra Otoparts Nusametal Division. The products are manufactured on the machining line. The production process of part oil separator through several stages including CNC milling and lathe machining, washing part, and part verification process. Line machining oil separators have been found to have waste problems, namely moving manpower, waiting time process, and inappropriate processing, causing work imbalances in the production process. The job imbalance causes the daily production target not to be achieved as the company planned, so the customer needs cannot be met. The problem in this study was solved using the value stream mapping method to analyze the waste occurring and the impact resulting from the relayout line machining oil separator. The waste analysis is done by spreading questionnaires, waste weighting, value stream analysis tools selection (VALSAT), and cause analysis with fishbone diagrams. After that, some improvements were made to reduce the waste. Implementation of improvements resulted in a reduction in the number of work processes from 72 to 47. Thus, the lead time for process line machining oil separator decreased from 521 seconds/cycle to 444 seconds/ cycle with an increase in the total process cycle efficiency of 8.67%. In addition, the productivity of the previous average number of parts of 6575 pcs/day was increased to 7024 pcs / day and the manpower was reduced from five manpowers/day to three manpowers/day. Keywords: Process Cycle Efficiency, Re-layout, VALSAT, Value Stream Mapping
Analisis Pengaruh Temperatur dan Durasi Preheat terhadap Cacat Produk pada Mesin Injection Molding Manual Apriawan Nur Huda; Ignatius Aris Hendaryanto; Benidiktus Tulung Prayoga; Agustinus Winarno
Jurnal Engine: Energi, Manufaktur, dan Material Vol. 8 No. 2 (2024)
Publisher : Proklamasi 45 University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30588/jeemm.v8i2.1867

Abstract

Plastic objects are widely used and found in all places, from food packaging, household appliances, and electronic devices to vehicles. Generally, plastic is used as a substitute for glass, wood, and metal. Over time, the use of plastic has become an environmental issue. To address the problem of plastic waste, the government has introduced the 3R (Reduce, Reuse, and Recycle) initiative. One of the easily used tools in the recycling process is the injection molding machine. This process often results in product defects such as Short Shot, Flow Mark, and Sink Mark. The temperature in the injection process affects the melting point of the plastic and can influence various aspects of the manufacturing process and the final quality of plastic products. The heating duration affects the viscosity of the plastic material to be injected. The research conducted is experimental, and several tests were performed to determine the effect of temperature variation and preheat duration of the injection molding machine on product quality. Simulation results show that the higher the temperature used, the greater the resulting sink marks. The test results indicate that improper temperature and preheat duration usage will affect the occurrence of product defects. A temperature that is too low can result in high pressure during the injection process, preventing the material from filling the cavity maximally. Preheat duration and temperature are critical factors in the plastic manufacturing process, affecting melting points, flow quality, dimensional stability, and the mechanical properties of the final product. Proper control of heating duration, temperature, and other process conditions is essential to produce high-quality, defect-free plastic products. Keywords: Injection Molding, Preheat, Temperature
Efisiensi Termal Cross Section Double Drum Water Tube Boiler Pengaruh Rasio Udara Bahan Bakar Solar Berbasis Water Level Control (AM61-F) Pada Produksi Saturated Steam Proses Kontinyu Tiesyah Mainur Aini; Tahdid; Isnandar Yunanto; Erlinawati
Jurnal Engine: Energi, Manufaktur, dan Material Vol. 8 No. 2 (2024)
Publisher : Proklamasi 45 University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30588/jeemm.v8i2.1924

Abstract

A Boiler is a type of closed vessel that transfers heat energy from the combustion process to water until it becomes hot steam (steam). To produce good steam, the Boiler must be reliable in its heat transfer system, mass transfer system and hydrodynamic system. This will also have an impact on cost, thermal efficiency and the environment. In order to produce steam, good combustion and proper water level regulation are required. Combustion is an exothermic reaction that takes place very quickly, which releases energy in the form of heat and flame and is able to spread heat through a medium. In order for combustion to occur optimally, it must pay attention to the value of the Air Fuel Ratio (AFR). The regulation of the water level also affects the steam produced. This study studies the variables of air fuel ratios (Air Fuel Ratio) 16, 18, 20, 22 and 24 as well as water level levels of 20%, 30%, 40%, 50% and 60%. From this study, a flame temperature value of 685.9°C was obtained with a thermal efficiency of 69,61% Specific Fuel Consumption 0,0000339 kg/kJ which is in the 4th experiment, namely Air Fuel Ratio 22 and Water Level 50% with optimal combustion and steam production results. Keywords: Boiler, Saturated Steam, Air Fuel Ratio, Water Level, Energy, Thermal Efficiency, Specific Fuel Consumption.
The Treatment of Musi River Water Sample using Slow Sand Filter and Ultraviolet Radiation (UV) with Solar Cell Power Sources Imaniah Sriwijayasih; Eky Novianarenti; Tuty Emilia Agustina; Subriyer Nasir; Rikky Leonard; Tarikh Azis Rand; Imah Luluk Kusminah
Jurnal Engine: Energi, Manufaktur, dan Material Vol. 8 No. 2 (2024)
Publisher : Proklamasi 45 University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30588/jeemm.v8i2.1842

Abstract

The Musi River's water is typically used to meet everyday needs. However, because of the current high population and activities, industrial and domestic garbage are being dumped straight into the Musi River. The purpose of this research was to study the variables that affect the processing of the Musi Riiver Water Samples to get the quality standard requirements of the third-grade river water. Water is filtered using a slow sand filter with a 50–70 cm sand height fluctuation and four different UV irradiation times 15, 30, 45, and 60 minutes. The results of this investigation showed that 2% DO was obtained for the filtration of Musi River water using a slow sand filter with a height of 70 cm sand. BOD5 and COD degradation were determined to be 82% and 93%, respectively. Meanwhile, 29/100 ml of E. Coli was discovered for the UV radiation therapy after a 60-minute irradiation period.  
Rancang Bangun Pembersih Filter Oli Turbin Uap Unit 015-T05 A Kurniawan, Dafa Rizki; Felixtianus Eko Wismo; Sugiyanto; Harjono
Jurnal Engine: Energi, Manufaktur, dan Material Vol. 8 No. 2 (2024)
Publisher : Proklamasi 45 University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30588/jeemm.v8i2.1850

Abstract

The oil filter plays a very important role in the lubrication system, where the oil filter functions as the main filter for the lubrication system. Companies that operate in the energy conversion sector use machines that operate 24 hours to produce their products. The steam turbine engine is a very influential tool. Where this tool is the driver of the pumps that distribute pressurized liquid fluid from the medium pressure process to high pressure. However, this machine has a problem, namely the engine's lubrication system is less than optimal, which is caused by manually cleaning the oil filter. The manual oil cleaning process apparently did not comply with the recommendations in the filter manufacturer's manual. Based on these problems, researchers created a design for a steam turbine unit 015-T05 A oil filter cleaner with a backwash system aimed at simplifying the oil filter cleaning process. The method used in the design of this tool is the process of basic design concepts, calculating the nozzle used, and producing the design results. Based on this method, the research produces a design that is in accordance with the specified design design. This tool was tested using three variations of cleaning fluid, namely Pertamax, thinner and methanol. Testing this tool also uses gas fluid output from the compressor with variations of 4 bar and 6.2 bar. In conclusion, this tool is able to clean the oil filter optimally, with a cleaning pressure of 6.2 bar, this tool is able to increase the cleanliness indicator of a dirty oil filter. As a result, the oil filter that was cleaned with Pertamax gasoline obtained a cleanliness value of 5.8 bar, the most optimal indicator, and was able to increase the filter's performance time by 720 hours.
Rancang Bangun Mesin Reduktor Polutan Berbasis Sirkulasi Air Rendi Rendi; Muhammad Firman
Jurnal Engine: Energi, Manufaktur, dan Material Vol. 8 No. 2 (2024)
Publisher : Proklamasi 45 University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30588/jeemm.v8i2.1921

Abstract

Environmental pollution, especially due to pollutants, is a problem that needs special attention. One solution that can deal with this problem is to design and build a machine that can reduce pollutants. This research aims to design and build a pollutant reduction machine with a water circulation system as a reducer. This machine consists of three main components, a reducer tube, a water pump and a blower. The test is carried out by measuring the levels of carbon monoxide (CO) and hydrocarbon (HC) gas before and after passing through the reductor machine. The research results show that this machine is able to reduce carbon monoxide (CO) levels from 6.1%-6.64% to 0.98%-1.18%, and hydrocarbon (HC) levels from 714-756 ppm to 346-378 ppm. Keywords: Pollutant reduction machine, carbon monoxide (CO) levels, hydrocarbon levels (HC)
Uji Performansi Mesin Pengisi Bumbu Pasta Semi Otomatis untuk Bubur Pedas Instan Suhendra; Feby Nopriandy; Winda Apriani
Jurnal Engine: Energi, Manufaktur, dan Material Vol. 8 No. 2 (2024)
Publisher : Proklamasi 45 University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30588/jeemm.v8i2.1925

Abstract

The main problem faced by the instant bubur pedas business unit is the filling of pasta seasoning in the packaging. The packaging of seasoning paste is currently done manually by putting the seasoning paste into the plastic packaging using a spoon. The weakness of the manual filling technique was that it has a small filling capacity and needs to be more practical and hygienic. Through this research, an effort was made to overcome these problems by creating a semi-automatic pasta seasoning filling system. This research aims to conduct performance tests on a semi-automatic pasta seasoning filling machine for instant bubur pedas and analyze the relationship between the rotation of the stepper motor and the mass of pasta seasoning coming out of the filling machine. The performance test carried out on the machine is in the form of an analysis of packaging time and packaging capacity. The independent variable was the number of stepper motor revolutions, ranging from 1 to 20. Based on the performance test results, the highest packaging capacity was obtained at 208 packs/hour in the treatment of stepper motor rotation one time, with the number of spices released at 3.29 grams. Increasing the mass of packaged spices requires more stepper motor revolutions, increasing the time needed for each packaging cycle. The stepper motor rotation and the mass of seasoning paste coming out of the filling machine show a consistent linear relationship with a coefficient of determination (R2) value of 0.9983. These results show that this machine can maintain the consistency of the mass of seasoning released per stepper motor rotation. Keywords: bubur pedas, filling machine, paste seasoning, performance test, semi-automatic
Analisis Kekuatan Struktur Pada Desain Traction Rod Lokomotif Kereta Api Dengan Metode Finite Element Analysis (FEA) Irsad Makhbulloh Ilyasa; Ignatius Aris Hendaryanto; Handoko; Agustinus Winarno
Jurnal Engine: Energi, Manufaktur, dan Material Vol. 8 No. 2 (2024)
Publisher : Proklamasi 45 University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30588/jeemm.v8i2.1929

Abstract

The structural strength of locomotive bogies is crucial for bearing operational loads and absorbing engine vibrations to efficiently transmit torque to the train wheels. The traction rod, a critical component in this system, plays a key role in transferring power from the main engine to the locomotive wheels. With the CC300 locomotive engine producing 2.200 hp, the traction rod experiences significant loads, necessitating regular maintenance. Given that this component is currently imported, the company is striving to redesign the traction rod to ensure strong structural integrity for local production, reducing dependency on imports and optimizing maintenance costs. The redesign involves adding structures to the existing design to even out stress distribution and enhance safety factors. Finite Element Analysis (FEA) is utilized to compare the structural strength between the original and redesigned designs, resulting in significant improvements in load-bearing capacity and deformation reduction. Simulation results show variations in stress, deformation, and safety factors among the original design, the redesign by the company, and the redesign by the researchers. The original design exhibits a stress of 194,64 MPa, deformation of 4,2817 mm, and a safety factor of 1,2844. The company's redesign achieves a stress of 438,37 MPa, deformation of 3.4356 mm, with a safety factor of 0,5703. Meanwhile, the researchers' redesign shows a stress of 154,05 MPa, deformation of 4,4812 mm, and a safety factor of 1,6288.
Uji Kinerja Mesin Pemotong Adonan Kerupuk Otomatis dengan Pengaturan Ketebalan Potongan Irma Fahrizal; Feby Nopriandy; Suhendra
Jurnal Engine: Energi, Manufaktur, dan Material Vol. 8 No. 2 (2024)
Publisher : Proklamasi 45 University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30588/jeemm.v8i2.1934

Abstract

The main problem cracker businesses face is the process of cutting cracker dough. Cutting crackers is currently done using a simple cutting tool, but the disadvantages are low cutting capacity, requiring much energy in operation, and low uniformity of cut results. An effort to overcome these problems is to conduct research by developing a cracker dough-cutting machine. The purpose of this research was to test the performance of an automatic cracker dough cutting machine. The independent variables are dough container motion and piece thickness, while the independent variables are piece capacity, piece uniformity, and percentage of damaged pieces. The dough container motion was varied into four treatments, namely 15, 17, 20, and 24 movements/minute. The dough piece thickness was varied into three 1, 2, and 3 mm treatments. Increasing the dough container movement per minute can significantly increase the capacity and percentage of piece damage. The largest capacity was achieved in treating 2 mm thick pieces with 24 dough container movements/minute, resulting in 2,004 pieces/hour. The uniformity of the best-cut results in the 3 mm thick cut with a value of 92.84%. The smallest percentage of piece damage is obtained in the treatment of 1 mm thick pieces with a dough container motion of 15 movements/minute, resulting in a damage percentage of 15.91%.

Page 12 of 14 | Total Record : 140

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