Jurnal Konversi, Energi dan Manufaktur, D. Yulianti, Ifat Fauziah, Hamid Abdillah, Kurniawan, Irma Yulianti
One of the applications of fuel cells is Fuel Cell Electric Vehicles (FCEV). FCEV is more efficient and produces no carbon emissions than conventional internal combustion engine vehicles. FCEV emitting only water vapor and warm air. This research hoped will provide new knowledge regarding the monitoring system for hydrogen output in FCEVs using the Node-RED software application, as well as regarding flowmeters with RS 232 output. The design of this serial flowmeter monitoring system was carried out in the fuel cell laboratory, the Energy Conversion and Conservation Research Center (PRKKE). This research was carried out by direct observation of the laboratory where fuel cell electric cars were studied, and collected data directly in the laboratory. The Node-RED flow design begins by providing a timestamp every 10 seconds when FCEV is operated, debugging to determine how the results of trials and failures occur. When FCEV is operated, a tenth of a second of data from the flowmeter enters the Moxa Nport device server. This monitoring design combines the Moxa NPort 5230 device server, battery supply, flowmeter with RS232 communication, and several electronic circuits. The flowmeter testing experiment for hydrogen output data on Fuel Cell Electric Vehicles obtained 1.38 with a speed of 1.46 l/min.
{"title":"DESAIN SISTEM MONITORING FLOWMETER KOMUNIKASI RS 232 MENGGUNAKAN SOFTWARE NODE-RED PADA FUEL CELL ELECTRIC VEHICLE","authors":"Jurnal Konversi, Energi dan Manufaktur, D. Yulianti, Ifat Fauziah, Hamid Abdillah, Kurniawan, Irma Yulianti","doi":"10.21009/jkem.8.2.5","DOIUrl":"https://doi.org/10.21009/jkem.8.2.5","url":null,"abstract":"One of the applications of fuel cells is Fuel Cell Electric Vehicles (FCEV). FCEV is more efficient and produces no carbon emissions than conventional internal combustion engine vehicles. FCEV emitting only water vapor and warm air. This research hoped will provide new knowledge regarding the monitoring system for hydrogen output in FCEVs using the Node-RED software application, as well as regarding flowmeters with RS 232 output. The design of this serial flowmeter monitoring system was carried out in the fuel cell laboratory, the Energy Conversion and Conservation Research Center (PRKKE). This research was carried out by direct observation of the laboratory where fuel cell electric cars were studied, and collected data directly in the laboratory. The Node-RED flow design begins by providing a timestamp every 10 seconds when FCEV is operated, debugging to determine how the results of trials and failures occur. When FCEV is operated, a tenth of a second of data from the flowmeter enters the Moxa Nport device server. This monitoring design combines the Moxa NPort 5230 device server, battery supply, flowmeter with RS232 communication, and several electronic circuits. The flowmeter testing experiment for hydrogen output data on Fuel Cell Electric Vehicles obtained 1.38 with a speed of 1.46 l/min.","PeriodicalId":53345,"journal":{"name":"Jurnal Energi Dan Manufaktur","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80060313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jurnal Konversi, Energi dan Manufaktur, Basori, Marsudi, Aldi Hari Tri, Sakti Ridwan
Gas tungsten arc welding (GTAW) uses argon gas as a protective gas in the welding process. Argon gas cylinders weigh 100 kg, making it difficult to mobilize in large quantities when the welding work is at a certain height. Therefore it is necessary to create a storage area that is able to accommodate and withstand the load of gas cylinders and their contents and can be mobilized at a certain height. In order to get a suitable storage area, a design has been carried out, which includes calculating the strength of the frame, determining the material and design of the lifting lug, and calculating the welding connection of the lifting lug and hollow steel. The rack material used is SS400 type, the compressive stress that occurs due to the force acting on the hollow iron is 91.124 MPa and the stress received by the base plate is 127.5 MPa, while the allowable compressive stress for the material is 152 MPa. The load received by the lifting lug is 33,866.6 N, and the tensile stress due to the force acting on the lifting lug is 76.88 MPa, while the allowable tensile stress is 152 MPa, so the lifting lug is declared safe to use.
{"title":"DESAIN RAK TEMPAT PENYIMPANAN TABUNG GAS ARGON DENGAN KAPASITAS MAKSIMUM 3 TON","authors":"Jurnal Konversi, Energi dan Manufaktur, Basori, Marsudi, Aldi Hari Tri, Sakti Ridwan","doi":"10.21009/jkem.8.2.8","DOIUrl":"https://doi.org/10.21009/jkem.8.2.8","url":null,"abstract":"Gas tungsten arc welding (GTAW) uses argon gas as a protective gas in the welding process. Argon gas cylinders weigh 100 kg, making it difficult to mobilize in large quantities when the welding work is at a certain height. Therefore it is necessary to create a storage area that is able to accommodate and withstand the load of gas cylinders and their contents and can be mobilized at a certain height. In order to get a suitable storage area, a design has been carried out, which includes calculating the strength of the frame, determining the material and design of the lifting lug, and calculating the welding connection of the lifting lug and hollow steel. The rack material used is SS400 type, the compressive stress that occurs due to the force acting on the hollow iron is 91.124 MPa and the stress received by the base plate is 127.5 MPa, while the allowable compressive stress for the material is 152 MPa. The load received by the lifting lug is 33,866.6 N, and the tensile stress due to the force acting on the lifting lug is 76.88 MPa, while the allowable tensile stress is 152 MPa, so the lifting lug is declared safe to use. \u0000 \u0000 ","PeriodicalId":53345,"journal":{"name":"Jurnal Energi Dan Manufaktur","volume":"16 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85166142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Currently, the use of plastic products is increasing in various fields, due to their flexibility and low production costs. The injection molding process is a technique that is often used in the formation of plastic products. The focus of the problem of this study is the effect of heating temperature and hydraulic pressure on the results of box and gear molds using the injection molding process. The test method uses variations in temperature and hydraulic pressure to produce the maximum mold shape in the box and gear. From the results of the injection molding test for full yield gear products with a melt temperature of 368ºC, a mold temperature of 40ºC, and an injection pressure of 490 Psi, there was a failure in the test results due to the release of liquid which did not come out directly to fill the mold, because the pressure from the hydraulic jack must gradually.
{"title":"PENGARUH TEMPERATUR DAN TEKANAN TERHADAP HASIL CETAKAN POLYPROPYLENE MENGGUNAKAN MESIN INJECTION MOLDING VERTIKAL","authors":"Didik Sugiyanto, Yefri Chan, Angga Taopik","doi":"10.21009/jkem.8.2.7","DOIUrl":"https://doi.org/10.21009/jkem.8.2.7","url":null,"abstract":"Currently, the use of plastic products is increasing in various fields, due to their flexibility and low production costs. The injection molding process is a technique that is often used in the formation of plastic products. The focus of the problem of this study is the effect of heating temperature and hydraulic pressure on the results of box and gear molds using the injection molding process. The test method uses variations in temperature and hydraulic pressure to produce the maximum mold shape in the box and gear. From the results of the injection molding test for full yield gear products with a melt temperature of 368ºC, a mold temperature of 40ºC, and an injection pressure of 490 Psi, there was a failure in the test results due to the release of liquid which did not come out directly to fill the mold, because the pressure from the hydraulic jack must gradually.","PeriodicalId":53345,"journal":{"name":"Jurnal Energi Dan Manufaktur","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90618413","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jurnal Konversi, Energi dan Manufaktur, Yaziz Zidan Yusniansyah, Iwan Kurniawan
In the world of coal mining the use of heavy equipment is absolute. The use of heavy equipment in coal mining is a job that requires optimal production capabilities of heavy equipment, because there are large volumes of excavation work, stockpiling and transportation of material. The standard body design on the Caterpillar 777D dump truck has not been specifically designed for transporting coal materials, so it is not ideal. This study aims to design a dump truck body by adding a larger body capacity than the standard body. The standard used for determining the mass of material to be transported is in accordance with ISO 6483: 1980. After obtaining a new body design using Autodesk Inventor software, the weight of the body and the weight of the coal to be transported will be known, after that the load distribution calculation on the axles will be carried out. front and rear axles. Load distribution will be limited by the maximum load allowed on the front axle and rear axle according to the regulations specified on the Caterpillar 777D unit. Having obtained a new body design with a more optimal transport volume capacity, it will be very useful for more efficient coal transportation. So it was concluded that the results of the analysis of the Caterpillar 777D tub specifically for coal transportation can exceed the standard volume capacity with a volume capacity of 120 m3.
{"title":"OPTIMALISASI DESAIN TRUK JUNGKIT CATERPILLAR 777D UNTUK PENGANGKUTAN BATU BARA","authors":"Jurnal Konversi, Energi dan Manufaktur, Yaziz Zidan Yusniansyah, Iwan Kurniawan","doi":"10.21009/jkem.8.2.3","DOIUrl":"https://doi.org/10.21009/jkem.8.2.3","url":null,"abstract":"In the world of coal mining the use of heavy equipment is absolute. The use of heavy equipment in coal mining is a job that requires optimal production capabilities of heavy equipment, because there are large volumes of excavation work, stockpiling and transportation of material. The standard body design on the Caterpillar 777D dump truck has not been specifically designed for transporting coal materials, so it is not ideal. This study aims to design a dump truck body by adding a larger body capacity than the standard body. The standard used for determining the mass of material to be transported is in accordance with ISO 6483: 1980. After obtaining a new body design using Autodesk Inventor software, the weight of the body and the weight of the coal to be transported will be known, after that the load distribution calculation on the axles will be carried out. front and rear axles. Load distribution will be limited by the maximum load allowed on the front axle and rear axle according to the regulations specified on the Caterpillar 777D unit. Having obtained a new body design with a more optimal transport volume capacity, it will be very useful for more efficient coal transportation. So it was concluded that the results of the analysis of the Caterpillar 777D tub specifically for coal transportation can exceed the standard volume capacity with a volume capacity of 120 m3.","PeriodicalId":53345,"journal":{"name":"Jurnal Energi Dan Manufaktur","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86797849","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Nut and bolt components (fasteners) can be produced through various techniques, including through the forging process. However, in a cold forging process (cold forming) the production of nuts cannot be separated from failures, in the form of defects in cracks on the surface. This failure has an impact on productivity, besides that it can hamper other processes. In this study, the crack defects of SWCH45K carbon steel M14 nuts could be identified visually during inspection. In order to find out the cause of the failure, an analysis was carried out by simulating the cold forming process for the M14 nut according to the existing process variable data using the DEFORM 2D/3D V10.2 program. The simulation results show that the formation at stations 3 and 4 does not fully fill the mold (dies) and high damage to the bearing surface (flange) area, crack defects are caused by high concentrations of stress in the process of forming station 3 because the punch corner does not have a radius (rounding). With the design punch parameters proposed for process improvement, the simulation results for the formation of M14 station 3 and 4 nuts are fully filled, the potential for crack defects decreases.
{"title":"Simulasi Perbaikan Desain Proses Pembentukan Tempa Dingin (Cold Forming) Mur M14","authors":"Dodi Iwan Sumarno, None Zaid Sulaiman, None Maman Suryaman","doi":"10.52005/permadi.v5i2.122","DOIUrl":"https://doi.org/10.52005/permadi.v5i2.122","url":null,"abstract":"Nut and bolt components (fasteners) can be produced through various techniques, including through the forging process. However, in a cold forging process (cold forming) the production of nuts cannot be separated from failures, in the form of defects in cracks on the surface. This failure has an impact on productivity, besides that it can hamper other processes. In this study, the crack defects of SWCH45K carbon steel M14 nuts could be identified visually during inspection. In order to find out the cause of the failure, an analysis was carried out by simulating the cold forming process for the M14 nut according to the existing process variable data using the DEFORM 2D/3D V10.2 program. The simulation results show that the formation at stations 3 and 4 does not fully fill the mold (dies) and high damage to the bearing surface (flange) area, crack defects are caused by high concentrations of stress in the process of forming station 3 because the punch corner does not have a radius (rounding). With the design punch parameters proposed for process improvement, the simulation results for the formation of M14 station 3 and 4 nuts are fully filled, the potential for crack defects decreases.","PeriodicalId":53345,"journal":{"name":"Jurnal Energi Dan Manufaktur","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135439672","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-31DOI: 10.52005/permadi.v5i2.121
None Haryadi, None Ali Mahmudi, None Sugianto, None Dibyo Setiawan
Increased interest in the use of vortex turbines as a renewable energy source. more advantages compared to axial turbines in general. The aim of this applied research is expected to be able to increase the power and efficiency of vortex turbines, achieving the target efficiency output of >30% from the previous research output of 37% on the performance of single and two-stage turbines with an angle of 630. The research method is experimental based, the study being carried out at this time with variations in discharge and runner type 630 one stage and Savonius with exhaust channels cut off by 2cm, this was done to determine the response to increasing the efficiency of the vortex turbine. Experimental operational approach with SNI 8277:2016, discharge variation 11-13 l/s. The results of the experimental recording of the application of the runner 630 on one level, obtained that the highest efficiency was a flow rate of 11 l/s with an efficiency of 29%. The treatment of cutting the drain channel had an impact on reducing efficiency.
{"title":"Studi Pengaruh Debit dan Jenis Runner Terhadap Efisiensi Turbin Vorteks PLTPH","authors":"None Haryadi, None Ali Mahmudi, None Sugianto, None Dibyo Setiawan","doi":"10.52005/permadi.v5i2.121","DOIUrl":"https://doi.org/10.52005/permadi.v5i2.121","url":null,"abstract":"Increased interest in the use of vortex turbines as a renewable energy source. more advantages compared to axial turbines in general. The aim of this applied research is expected to be able to increase the power and efficiency of vortex turbines, achieving the target efficiency output of >30% from the previous research output of 37% on the performance of single and two-stage turbines with an angle of 630. The research method is experimental based, the study being carried out at this time with variations in discharge and runner type 630 one stage and Savonius with exhaust channels cut off by 2cm, this was done to determine the response to increasing the efficiency of the vortex turbine. Experimental operational approach with SNI 8277:2016, discharge variation 11-13 l/s. The results of the experimental recording of the application of the runner 630 on one level, obtained that the highest efficiency was a flow rate of 11 l/s with an efficiency of 29%. The treatment of cutting the drain channel had an impact on reducing efficiency.","PeriodicalId":53345,"journal":{"name":"Jurnal Energi Dan Manufaktur","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135439527","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-31DOI: 10.52005/permadi.v5i2.109
None Ahmad Rifai, None Syaripuddin, Rani Anggrainy, None Agung Premono, None Ferry Budhi Susetyo
The turning process is essential in the manufacturing industry to produce a product. The quality of a product is greatly influenced by the turning process, which produces varying roughness characteristics of the product's surface. The selection of suitable cutting parameters greatly influences the surface roughness of the product from the turning process. Therefore, a study was carried out on the cutting parameter's effect on the workpiece's surface roughness. In this research, the material used was ST 41 steel with a diameter of 25.4 mm. The turning process uses a conventional lathe. Variation in this study is the cutting speed and feeding depth. The results showed that the higher the cutting speed, the smaller the surface roughness value. On the contrary, the greater the feeding depth, the greater the surface roughness value.
{"title":"Pengaruh Parameter Pemotongan Pembubutan Konvensional Terhadap Kekasaran Permukaan Baja ST41","authors":"None Ahmad Rifai, None Syaripuddin, Rani Anggrainy, None Agung Premono, None Ferry Budhi Susetyo","doi":"10.52005/permadi.v5i2.109","DOIUrl":"https://doi.org/10.52005/permadi.v5i2.109","url":null,"abstract":"The turning process is essential in the manufacturing industry to produce a product. The quality of a product is greatly influenced by the turning process, which produces varying roughness characteristics of the product's surface. The selection of suitable cutting parameters greatly influences the surface roughness of the product from the turning process. Therefore, a study was carried out on the cutting parameter's effect on the workpiece's surface roughness. In this research, the material used was ST 41 steel with a diameter of 25.4 mm. The turning process uses a conventional lathe. Variation in this study is the cutting speed and feeding depth. The results showed that the higher the cutting speed, the smaller the surface roughness value. On the contrary, the greater the feeding depth, the greater the surface roughness value.","PeriodicalId":53345,"journal":{"name":"Jurnal Energi Dan Manufaktur","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135439528","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-31DOI: 10.52005/permadi.v5i2.101
Rani Anggrainy
Pengecatan adalah salah satu upaya untuk menjaga penampilan bodi kendaraan, dikarenakan pengecatan memiliki fungsi untuk melindungi material dari terjadinya karat. Oleh sebab itu, dilakukan penelitian terkait sintesis cat epoxy dengan variasi suhu pengeringan agar diperoleh komposisi yang tepat untuk mendapatkan karakteristik yang baik. Penelitian yang sudah banyak dilakukan hanya berfokus pada temperatur oven pengeringan saja, namun pada penelitian ini waktu pengeringan oven menjadi salah satu hal yang juga diperhatikan. Hasil penelitian yang didapatkan pada penelitian ini adalah semakin tinggi temperatur pengeringan dengan waktu pengeringan yang sama dapat menurunkan nilai penampilan dan kemampuan daya kilap serta ketebalan lapisan cat. Berlawanan dengan hal tersebut, ternyata tingginya suhu pengeringan tidak memiliki pengaruh terhadap kemampuan daya lekat cat apabila dilakukan waktu pemanggangan yang sama, yaitu 20 menit.
{"title":"SINTESIS CAT EPOXY DENGAN VARIASI SUHU PENGERINGAN UNTUK BODI KENDARAAN","authors":"Rani Anggrainy","doi":"10.52005/permadi.v5i2.101","DOIUrl":"https://doi.org/10.52005/permadi.v5i2.101","url":null,"abstract":"Pengecatan adalah salah satu upaya untuk menjaga penampilan bodi kendaraan, dikarenakan pengecatan memiliki fungsi untuk melindungi material dari terjadinya karat. Oleh sebab itu, dilakukan penelitian terkait sintesis cat epoxy dengan variasi suhu pengeringan agar diperoleh komposisi yang tepat untuk mendapatkan karakteristik yang baik. Penelitian yang sudah banyak dilakukan hanya berfokus pada temperatur oven pengeringan saja, namun pada penelitian ini waktu pengeringan oven menjadi salah satu hal yang juga diperhatikan. Hasil penelitian yang didapatkan pada penelitian ini adalah semakin tinggi temperatur pengeringan dengan waktu pengeringan yang sama dapat menurunkan nilai penampilan dan kemampuan daya kilap serta ketebalan lapisan cat. Berlawanan dengan hal tersebut, ternyata tingginya suhu pengeringan tidak memiliki pengaruh terhadap kemampuan daya lekat cat apabila dilakukan waktu pemanggangan yang sama, yaitu 20 menit.","PeriodicalId":53345,"journal":{"name":"Jurnal Energi Dan Manufaktur","volume":"124 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84730417","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-10DOI: 10.24843/jem.2022.v15.i02.p09
Andre Amba Matarru, Ahmad Ridoh
One of the supporting mining activities at PT. Bukit Makmur Mandiri Utama is the maintenance of the truck vehicle unit, where the truck functions as a mode of transportation to transport various kinds of materials and other materials including fuel. The unit operates continuously causing a decrease in the level of reliability and causes frequent breakdowns and high downtime in mining units, including the Volvo FMX 440 truck unit. To minimize breakdown and downtime, a good maintenance system is needed to prevent engine damage. Scheduled maintenance systems or predictive maintenance using the Wicope Platform can minimize breakdown conditions. In order to obtain a maintenance mechanism that can increase the service life of a unit and component, it can also have an effect on saving the company's expenses in carrying out the maintenance process.
{"title":"PEMELIHARAAN MENGGUNAKAN PLATFORM WICOPE PADA UNIT VOLVO FMX 440 DI PT. BUKIT MAKMUR MANDIRI UTAMA","authors":"Andre Amba Matarru, Ahmad Ridoh","doi":"10.24843/jem.2022.v15.i02.p09","DOIUrl":"https://doi.org/10.24843/jem.2022.v15.i02.p09","url":null,"abstract":"One of the supporting mining activities at PT. Bukit Makmur Mandiri Utama is the maintenance of the truck vehicle unit, where the truck functions as a mode of transportation to transport various kinds of materials and other materials including fuel. The unit operates continuously causing a decrease in the level of reliability and causes frequent breakdowns and high downtime in mining units, including the Volvo FMX 440 truck unit. To minimize breakdown and downtime, a good maintenance system is needed to prevent engine damage. Scheduled maintenance systems or predictive maintenance using the Wicope Platform can minimize breakdown conditions. In order to obtain a maintenance mechanism that can increase the service life of a unit and component, it can also have an effect on saving the company's expenses in carrying out the maintenance process.","PeriodicalId":53345,"journal":{"name":"Jurnal Energi Dan Manufaktur","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44526414","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2023-05-10DOI: 10.24843/jem.2022.v15.i02.p08
Wahyu Pamungkas
Logam baja merupakan material utama yang umum digunakan dalam industri hidromekanikal. Jenis logam baja yang banyak digunakan pada industri ini adalah baja karbon rendah, karena baja karbon rendah memiliki keuletan yang tinggi dan mudah machining. Produk hidromekanikal dirancang dengan umur operasi selama 20 hingga 25 tahun. Salah satu faktor keselamatan yang wajib diperhatikan adalah pertumbuhan korosi pada semua bagian struktur produk. Proses terjadinya korosi tidak dapat dihentikan, namun hanya bisa dikendalikan atau diperlambat lajunya. maka dari itu perlu menekan laju korosi serendah mungkin. Salah satu usaha untuk mengendalikan korosi adalah memisahkan logam dan lingkungan yang korosif dengan menggunakan lapis lindung atau coating. Keberhasilan dari proses coating sangat tergantung pada proses surface preparation, dimana proses ini akan mempengaruhi ketebalan coating dari material. Teknik dari surface preparation sangat beragam, namun yang sering digunakan adalah teknik sandblasting. Penelitian ini bertujuan untuk mengetahui pengaruh variasi jarak nozzle sandblasting terhadap kekasaran permukaan, ketebalan coating, dan nilai laju korosi. Variasi jarak nozzle yang digunakan adalah 300 mm, 600 mm, dan 1000 mm. Dari peneltian yang dilakukan, didapatkan hasil bahwa semakin dekat jarak nozzle sandblasting maka semakin tinggi nilai kekasaran yang diperoleh, semakin tebal nilai ketebalan coating, dan semakin rendah nilai laju korosi yang dihasilkan. Variasi jarak nozzle 300 mm memberikan hasil terbaik dengan rata-rata nilai kekasaran permukaan 88,1 µm, rata-rata nilai ketebalan 605,0 µm, dan rata-rata nilai laju korosi 0,02708 mm/y.
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