SPROCKET JOURNAL OF MECHANICAL ENGINEERING最新文献

{"title":"Analisa Kebisingan Pada Alat Berat Wheel Loader Wa-350 Berdasarkan Perbandingan Jarak 50, 100, 150 Cm Dan Kapasitas","authors":"Suriady Sihombing, W. Nababan, Miduk Tampubolon, Cris Stevan Turnip","doi":"10.36655/sprocket.v5i2.1396","DOIUrl":"https://doi.org/10.36655/sprocket.v5i2.1396","url":null,"abstract":"Wheel loader is a tool that facilitates work by using hydraulic energy. Wheel loader testing is carried out by looking for noise data arising in the combustion chamber. There are several stages that must be done, namely the first step is to prepare a sound level meter as a noise detection device for heavy equipment, wheel loader, then take measurements with several variations in the distance between the combustion chamber and the sound level meter. In the next step we can find out the noise level read at the sound level meter with ideal, medium, and maximum rotation on the WA-350 wheel loader. So that the Noise Threshold Value according to Permenaker No. per-51 / MEN / 1999, ACGIH, 2008 and SNI 16-7063-2004 is 85 dB. So the noise produced by the Wheel Loader above the NAB Permenaker 104.7dB can cause tingling, unwell, hearing saturation, stomach pain, and circulatory problems. It is recommended that workers are required to use earmuffs or ear muffs.","PeriodicalId":156199,"journal":{"name":"SPROCKET JOURNAL OF MECHANICAL ENGINEERING","volume":"36 15","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140426150","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}

{"title":"Upaya Pereduksian Emisi Karbon Dioksida (CO2) di Indonesia melalui Analisis Integrasi Power-to-Gas dengan PLTU Batubara","authors":"Rauzan Fikri Muhammad Zaky, D. A. Sari","doi":"10.36655/sprocket.v5i2.1333","DOIUrl":"https://doi.org/10.36655/sprocket.v5i2.1333","url":null,"abstract":"Sektor pembangkit listrik sebagai punggung utama energi nasional masih didominasi oleh bahan bakar fosil khususnya batubara. Emisi gas karbon dioksida (CO2) yang dihasilkan dari proses pembakaran batubara menimbulkan banyak dampak buruk pada bidang lingkungan dan kesehatan masyarakat. Sebagai upaya reduksi emisi CO2 yang dihasilkan, Power-to-Gas (PtG) menawarkan solusi yang efektif guna mengatasi masalah emisi dengan mengubahnya menjadi energi. Sistem PtG terdiri dari proses carbon capture (penangkapan karbon), elektrolisis dan metanasi. Melalui sistem PtG, emisi CO2 dari PLTU (Pembangkit Listrik Tenaga Uap) dapat diubah menjadi gas metana (CH4) dalam bentuk syngas (gas sintesis). Metode pada studi ini adalah memetakan sebaran PLTU Indonesia di tahun 2021, memperkirakan emisi CO2 dan mereduksinya melalui carbon capture, serta menghitung estimasi produksi syngas. Estimasi emisi CO2 dari PLTU mencapai 62,5 juta ton dan mampu direduksi hingga 28,15 juta ton melalui pengintegrasian sistem PtG. Perolehan syngas diperkirakan mencapai 0,255 TSCF (Triliun Standard Cubic Feet) atau setara dengan 0,614% dari total cadangan gas alam Indonesia. Integrasi sistem PtG dengan PLTU batubara di Indonesia memiliki prospek yang menjanjikan dan memberikan peluang kajian lebih lanjut untuk mengenai pengembangannya. \u0000  \u0000The electricity generation sector, which is the backbone of national energy, is still dominated by fossil fuels, especially coal. The carbon dioxide (CO2) emissions resulting from the combustion of coal have many adverse effects on the environment and public health. To reduce CO2 emissions, Power-to-Gas (PtG) offers an effective solution to convert them into energy. The PtG system consists of carbon capture, electrolysis, and methanation processes. This system can convert CO2 emissions from coal-fired power plants into methane gas (CH4) in the form of syngas. The methodology used in this study involves mapping the distribution of Indonesian coal-fired power plants in 2021, estimating their CO2 emissions, reducing them through carbon capture, and calculating the estimated syngas production. The estimated CO2 emissions from the PLTU reach 62.5 million tonnes and can be reduced by up to 28.15 million tonnes through the integration of PtG systems. The acquisition of syngas is estimated to reach 0.255 TSCF (Trillion Standard Cubic Feet), or equivalent to 0.614% of Indonesia's total natural gas reserves. The integration of PtG systems with coal-fired power plants in Indonesia has promising prospects and provides opportunities for further study on its development.","PeriodicalId":156199,"journal":{"name":"SPROCKET JOURNAL OF MECHANICAL ENGINEERING","volume":"1 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140426239","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}

{"title":"Analisa Pengaruh Pendingin Terhadap Struktur Mikro Dan Sifat Mekanik Pada Baja ST 60","authors":"Parulian Siagian, W. Nababan, C. Manurung, Partahi Lumbangaol, L. Siagian, Wany Chytra Manurung","doi":"10.36655/sprocket.v5i2.1406","DOIUrl":"https://doi.org/10.36655/sprocket.v5i2.1406","url":null,"abstract":"The field of industry that produces human needs is growing rapidly. Encouraging increased productivity with iron metal-based machine components. Using quality materials, and certified. This research uses ST 60 steel with a carbon content of 0.48%.. The research process that will be carried out is Heat treatment is needed to minimize failure, change the structure, and form the desired properties, the rapid cooling process to produce a comparison of hardness in material variations, hardness testing to determine the hardness of a material, and observation of microstructure to observe the type of microstructure formed after heat treatment and without heat treatment. After testing, the heat treatment process greatly affects changes in the mechanical properties of the material, as evidenced by the increase in hardness values which initially before the heat treatment process amounted to 194.6 Kgrf / to 255.53 Kgrf / with SAE 40 lubricant cooling media, 220.43 Kgrf / with 50% lubricant cooling media with 50% water mixture, and 300, 7 Kgrf/ with long life coolant media and it is proven that in each material given heat treatment the hardness value has increased as well, before heat treatment the hardness value in ST 60 steel is only 194.6 Kgrf/, experiencing an increase in mechanical properties, namely work with SAE 40 lubricant cooling media with a value of 255.53 Kgrf/, 50% lubricant cooling media with 50% water mixture worth 220.43 Kgrf/ and long life coolant of 300.7 Kgrf/.","PeriodicalId":156199,"journal":{"name":"SPROCKET JOURNAL OF MECHANICAL ENGINEERING","volume":"25 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140424464","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}

{"title":"Studi Baja Karbon Rendah Terhadap Laju Korosi","authors":"Erna Dwi Kusumawati, Vera Pangni Fahriani","doi":"10.36655/sprocket.v5i2.1265","DOIUrl":"https://doi.org/10.36655/sprocket.v5i2.1265","url":null,"abstract":"Korosi merupakan masalah yang serius dalam bahan logam, korosi dapat dikatakan terjadinya penurunan kualitas logam akibat reaksi kimia dengan lingkungannya terutama melalui proses elektrokimia yang melibatkan anoda, katoda, dan elektrolit. Korosi dapat merugikan secara teknis, dan mengurangi sifat logam mekanis ini terjadi pada berbagai jenis dalam konstruksi, kendaraan, hingga peralatan elektronik hal ini dikarenakan oleh faktor lingkungan seperti lingkungan asam yang dapat mempercepat korosi. Perlindungan korosi terhadap baja karbon rendah sangat penting dengan menggunakan metode perlindungan termasuk pelapisan permukaan, penggunaan inhibitor korosi. Studi ini menggunakan metode literatur dengan mengumpulkan data dari berbagai jurnal yang telah dipublikasikan. Penelitian dilakukan menggunakan elektrokimia dan uji berat hilang untuk memahami perilaku korosi baja kerbon rendah dalam berbagai kondisi, dan memberikan wawasan mengenai bagaimana melakukan penelitian ilmiah terkait dengan sifat dan perlindungan logam terhadap korosi. Sehingga perlindungan korosi pada baja karbon rendah perlu diterapkan secara efektif untuk mengurangi kerusakan dan memperpanjang umur produk logam tersebut.","PeriodicalId":156199,"journal":{"name":"SPROCKET JOURNAL OF MECHANICAL ENGINEERING","volume":"56 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140427151","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}

{"title":"Evaluasi Menara Distilasi melalui Program Aspen Hysys","authors":"Syabrina Alfisyahri Miledhiya, D. A. Sari","doi":"10.36655/sprocket.v5i2.1335","DOIUrl":"https://doi.org/10.36655/sprocket.v5i2.1335","url":null,"abstract":"PT XXX merupakan pabrik produksi asam formiat pertama dan satu-satunya di Asia Tenggara. Proses produksi yang berlangsung di dalam pabrik terdiri dari dua tahap utama, yaitu tahap pembuatan metil format dan tahap pembentukan asam formiat. Bahan baku utama yang digunakan dalam proses produksi ini diantaranya gas karbon monoksida (CO), metanol (CH3OH), katalis yang berupa kalium metoksida (KOCH3), dan air (H2O). Asam formiat merupakan salah satu bahan kimia yang dapat digunakan untuk kepentingan industri seperti dalam industri karet yaitu sebagai bahan koagulan karet alam dalam industri farmasi,terutama desinfektan obat-obatan dan dipakai sebagai sebagai zat pengawetan dalam industri tekstil digunakan dalam proses drying dan finishing sebagai conditioner, dalam industri kulit digunakan untuk menetralisasi kapur,juga juga digunakan untuk mengasamkan makanan ternak. Maka dari itu diadakannya perbandingan antara simulasi Aspen Hysys dengan perhitungan manual agar mengetahui mana yang paling optimal dan setelah dilakukan keduanya didapatkanlah masih yang berbeda dari hasil keduanya dan yang paling optimal adalah menggunakan perhitungan manual atau menggunakan persamaan neraca massa. \u0000  \u0000PT XXX is the first and only formic acid production plant in Southeast Asia. The production process that takes place at the plant consists of two main stages, namely the methyl formate production stage and the formic acid production stage. The main raw materials used in this production process are carbon monoxide (CO) gas, methanol (CH3OH), a catalyst in the form of potassium methoxide (KOCH3), and water (H2O). Formic acid is one of the chemicals that can be used for industrial purposes, e.g., in the rubber industry, as a natural rubber coagulant; in the pharmaceutical industry, especially for disinfecting drugs; as a preservative; in the textile industry, as a conditioner in the drying and finishing process; in the leather industry, to neutralize lime; and also to acidify animal feed. Therefore, a comparison was made between the Aspen Hysys simulation and the manual calculations to find out which was the most optimal, and after doing both, it was found that there were still different results from both, and the most optimal was to use the manual calculations or to use the mass balance equation. \u0000 ","PeriodicalId":156199,"journal":{"name":"SPROCKET JOURNAL OF MECHANICAL ENGINEERING","volume":"63 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140424168","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}

{"title":"Perencanaan Daya Dan Perbedaan Jenis Bantalan (Bearing) Pada Mesin Pengupas Kulit Kacang Tanah Kapasitas 60 Kg/Jam","authors":"Richard Alfonso, C. Manurung, Suriady Sihombing, Pardingatan Sipayung Sipayung","doi":"10.36655/sprocket.v5i2.1386","DOIUrl":"https://doi.org/10.36655/sprocket.v5i2.1386","url":null,"abstract":"Appropriate technology is technology that is right on target to be used and developed by the community. The development of technology aims to ease human work. The Indonesian state, with the majority of its population working as farmers, really needs appropriate technological innovation to increase agricultural productivity. In this case, the author highlights the low productivity of peanut farmers in Indonesia. On the other hand, the level of peanut demand is increasing from year to year, but consumer demand cannot be met due to low domestic peanut production. Therefore, this study aims to determine the power and bearing maintenance on peanut shell peeling machines using an electric motor, which uses a Tachometer measuring instrument and is carried out at the Production Laboratory of HKBP Nommensen University Medan located at JL. Sutomo No. 4 Medan. The peanut shell peeling machine is made horizontally with 1 shaft and 40 peeling rods transmitted by a V-belt and pulley using an electric motor that functions to peel peanuts to separate the seeds from the shell. By designing and designing a peanut shell peeling machine, the bearing life used in the peanut peeler machine is 3440.78 and 909.86 hours at a rotation speed of 1382 rpm and 58623.94 and 20877.55 hours at a rotation speed of 795.7 rpm. The faster the engine speed, the enumeration load received by the bearing will be lighter, the slower the engine speed, the heavier the enumeration load received by the bearing. The production capacity that can be produced by this peanut shell peeling machine is 60 kg / hour with a peeling force of 51,012 and AC motor power of 1 Hp with a rotation of 2930 rpm.","PeriodicalId":156199,"journal":{"name":"SPROCKET JOURNAL OF MECHANICAL ENGINEERING","volume":"20 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140424819","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}

{"title":"Studi Eksperimen Pengaruh Variasi Besaran Sudut Buang Dan Sudut Bebas Menggunakan Pahat Tepi Rata Dengan Material Pahat HSS Terhadap Kekasaran Permukaan Pada Proses Pembubutan Benda Kerja Dengan Material Benda Kerja St 41","authors":"Gerry Patriadicka, Erwansyah Iskak, J. .","doi":"10.36655/sprocket.v3i1.571","DOIUrl":"https://doi.org/10.36655/sprocket.v3i1.571","url":null,"abstract":"A good level of surface roughness as one of the benchmarks for turning the workpiece is said to be of high quality. As a cutting tool, lathe chisels need free angles and exhaust angles according to the desired specifications. This study aims to determine the effect of variations in the size of the tool angle and how much free angle and exhaust angle are best used on the surface roughness of St 41 steel. The study was conducted using a lathe brand Bemato series 44376 with process parameters consisting of a spindle speed of 280 m /min, the infeed depth is 0.8 mm, and the infeed speed is 0.040 mm/rev. The research method used is an experimental method and the results of the turning process are measured the level of surface roughness using a surface roughness tester. Based on the results of the specimen measurements, it is found that there are differences in surface roughness produced by variations in the free angle (α) and exhaust angle (β). As for the lowest roughness value of the whole specimen turning process is in the turning process with variations in angle 6° and angle sudut 10° with a surface roughness value (Ra) of 2,555 m.","PeriodicalId":156199,"journal":{"name":"SPROCKET JOURNAL OF MECHANICAL ENGINEERING","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128692661","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}

{"title":"Analisis Pengaruh Media Pendingin Terhadap Kekerasan Baja S45C Pada Proses Hardening-Tempering","authors":"A. Arlingga, Somawardi, Sugianto","doi":"10.36655/sprocket.v3i1.565","DOIUrl":"https://doi.org/10.36655/sprocket.v3i1.565","url":null,"abstract":"This study used an experimental method, in the form of the heat treatment hardening  930⁰C with the variations in the cooling media of the coconut water, table salt water, mineral waterwater, coolant radiator, and dromus water and variations in temperatures of tempering 200⁰C, 420⁰C, and 600⁰C, the specimens were cylindrical in diameter 25 mm and 20 mm in length, this study aims to determine the optimum hardness value of S45C steel specimens due to the heat treatment process hardening-tempering. \u0000From the results of the study, there is the effect of hardening 930⁰C there is the most optimal hardness value found in coconut water cooling media with the hardness level of 53.5 HRC. Under the influence of tempering 200⁰C there is the optimum hardness value found from the influence of mineral water cooling media with the hardness level of 50.7 HRC, while the influence of tempering 420⁰C there is the most optimal hardness value from the influence of mineral water cooling media with the hardness level of 41.8 HRC, and for tempering effect 600⁰C there is the most optimal hardness value available from the influence of the coconut water cooling media with the hardness level of 35.93 HRC.","PeriodicalId":156199,"journal":{"name":"SPROCKET JOURNAL OF MECHANICAL ENGINEERING","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131497947","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}

{"title":"Analisa Kerusakan Pompa OCCWP Pada Pembangkit Listrik Tenaga Uap 2 x 115 MW","authors":"T. Sianturi, Sindak Hutauruk, Fiktor Sihombing","doi":"10.36655/sprocket.v3i1.572","DOIUrl":"https://doi.org/10.36655/sprocket.v3i1.572","url":null,"abstract":"The use of pumps in the industrial world, especially in power plants, cannot be separated from problems that arise that can cause losses. The research was conducted at PLTU 2 X 115 MW by taking a case that had happened to the pump, namely the Open Cycle Cooling Water Pump 2A. The analytical method used in this final project is the vibration analysis method, namely by reading the spectrum of the data retrieval results so that it can be seen what happens to the equipment that experiences an increase in vibration. \u0000 Bearing damage can be seen in the spectrum image of the measurement results, where the appearance of the spectrum in the high frequency range is an indication of bearing damage. And the high vibration which reaches 13.06 mm/s and is already in the danger category based on ISO 10816-3.","PeriodicalId":156199,"journal":{"name":"SPROCKET JOURNAL OF MECHANICAL ENGINEERING","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114796930","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}

{"title":"Pengaruh Fraksi Berat Serbuk Alumina Terhadap Porositas Busa Aluminium Hasil Injeksi Gas","authors":"Edy Yulianto","doi":"10.36655/sprocket.v3i1.578","DOIUrl":"https://doi.org/10.36655/sprocket.v3i1.578","url":null,"abstract":"Aluminum foam is a very interesting material to develop. This material is a material that has a combination of characteristics between physical and mechanical properties such as high stiffness and low density. There are several processes for making aluminum foam that have been developed, either through the liquid, solid, or gas phases. And of these various processes, the process of making aluminum foam through the liquid phase by using the gas injection method is the simplest and cheapest process. The principle of the process of making aluminum foam with this method is that bubbles are produced from the process of blowing the gas into the aluminum liquid in which there are additive particles that function as a bubble stabilizer. These stable bubbles will become pores after the aluminum liquid solidifies. This research will discuss the effect of the weight fraction of alumina powder with an average size of 5.77 μm added to liquid aluminum on the macro-pore structure in the form of shape and size as well as the spread of the resulting pores. And the result is that the optimal weight fraction of adding alumina powder is 15%, where the resulting pores have a more homogeneous and evenly shaped and sized.","PeriodicalId":156199,"journal":{"name":"SPROCKET JOURNAL OF MECHANICAL ENGINEERING","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126309212","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}