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Program Studi Sarjana Terapan Teknik Mesin Produksi dan Perawatan, Jurusan Teknik MesinPoliteknik Negeri Sriwijaya, Palembang, Indonesia
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MACHINERY: Jurnal Teknologi Terapan
Published by Politeknik Negeri Sriwijaya
ISSN : 27233359     EISSN : 2776673X     DOI : https://doi.org/10.5281/zenodo.
Core Subject : Science, Engineering,
Control & Systems Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering
MACHINERY Jurnal Teknologi Terapan was published by Mechanical Engineering Department, Politeknik Negeri Sriwijaya to disseminate in the form of technical and vocational research results of undergraduate (Sarjana Terapan) students of Mechanical Engineering in the fields of Machinery, Manufacturing, Metallurgy Sciences and Engineering, Design Engineering, Heavy Machine to academics, practitioners and students as well as interested parties. MACHINERY accepts article submissions written in Indonesian and welcoming in English. Determination of articles published in Machinery Jurnal Teknologi Terapan is through a review process by best partner of MACHINERY by considering, among others: fulfillment of the standard requirements of journal publications, research methods used, significance, and contribution to the results of research on technical and vocational in Mechanical engineering field study.
Arjuna Subject : Teknik (semua kategori) - Teknik Mesin
Articles 124 Documents
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ANALISIS STRUKTUR MIKRO TERHADAP HASIL EKPERIMENTAL SAMBUNGAN LAS SMAW PADA BAJA KARBON ST 37 Okviyanto, Toni; Dibyo Setiawan; Gugun Nugraha; Sutrimo; Destri Muliastri
MACHINERY Jurnal Teknologi Terapan Vol. 4 No. 2 (2023): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.8049215

Abstract

Welding is a process of joining two or more metals using thermal energy to melt them. The thermal processes of welded joints affect the phase change and the physical, microstructural, and mechanical properties of the weld. The purpose of the activity, to analyze the results of SMAW welded joints, parameters of current strength, and seam angle of the ST 37 carbon steel microstructure is a continuation of previous publication activities. Variation of the current strength of 90 A, 100 A, 110 A and seam angles of 600 and 700 with electrodes Ø2.6 mm and Ø3.2 mm. During the welding process, a series of thermal cycles of the weld metal and HAZ occur, from thermalization to maximum temperature and then undergoing a cooling process. The final composition of the weld metal, filler metal, and the condition of the air in the weld area are factors for the formation of the microstructure. Microstructures such as acicular ferrite can improve the mechanical properties of the weld metal. Visualization of the microstructure using an optical microscope during the metallographic inspection process was carried out by observing the grain size and phase formed on the base metal, heat-affected zone (HAZ), fusion line (FL), and weld metal (WL). The results showed that the weld metal (WM) with a series of experiments tended to have a larger acicular ferrite structure. The conclusion of the microstructural analysis is that the greater the current strength and seam angle, the more acicular ferrite structures are formed.
ANALISIS QUALITY FUNCTION DEPLOYMENT (QFD) PADA RANCANG BANGUN MESIN MILLING 3 SUMBU Rizal, Syamsul; Rifki, Muhammad; Malik, Irawan; Zamheri, Ahmad
MACHINERY Jurnal Teknologi Terapan Vol. 4 No. 2 (2023): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.8084960

Abstract

Machines are a special concern in the production process of several parties who use CNC machines, including industrial companies, educational institutions such as universities, polytechnics and vocational high schools. Machines used in industry and agencies with various brands, the price reaches hundreds of millions per unit and even billions of rupiah, other commercial CNC Mini Milling is still relatively expensive, and also has a heavy weight. The purpose of this study was to determine the customer's desire on the CNC Mini Milling machine, by conducting a questionnaire to increase customer satisfaction. Therefore, in this study, an analysis of customer satisfaction was carried out using the Quality Function Deployment (QFD) method in order to design a design according to the customer's wishes. The results of the study can be used as material to make improvements to material specifications, material capabilities and appropriate dimensions. The results of this study have found things that must be prioritized based on the House of Quality. Some of the priorities include having to repair the frame at a low price, light and strong, can increase ST 37, easy to use and dimensions that are not too big.
PENGARUH FEED RATE DAN DEPTH OF CUT TERHADAP KEKASARAN PERMUKAAN BAJA AISI 1045 CNC MILLING Nugraha, Dwi Indra; Junaidi, Ahmad; ., Suparjo
MACHINERY Jurnal Teknologi Terapan Vol. 4 No. 2 (2023): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.8085379

Abstract

This research is to determine the quality of machining products by testing the surface roughness. The research objective was to determine the effect of Feed Rate and Depth of Cut on the surface finish milling process on the surface roughness level. The method used in this research is the experimental method. The independent variables in this study were variations of Feed Rate and Depth of Cut where the Feed Rate values ​​taken was 300 mm/minute, 500 mm/minute, 700 mm/minute. The Depth of Cut values ​​taken was 0.1 mm, 0.2 mm, 0.3 mm and 0.4 mm. Based on the results of the roughness test of the Feed Rate and Depth of Cut variations of 0.1 mm each showed an average roughness value of 1.3005 μm, 1.70275 μm, 1.011 μm and 1.635 μm, the roughness test of the Feed Rate variation on Depth of Cut 0.2 mm each shows an average roughness value of 2.063 μm, 2.59325 μm, 2.31775 μm, and 2.75625 μm, roughness testing of the Feed Rate variation at a Depth of Cut of 0.3 mm shows average roughness values ​​of 3.01075 μm, 3.0215 μm, 3.01525 μm, and 3.091 μm, roughness testing of Feed Rate variation at Depth of Cut 0.4 mm each shows an average roughness value of 2.562 μm, 2.804 μm, 3.183 μm and 3.693 μm. Based on the standardization of the roughness value symbol according to (ISO) the results of research that has been done show that the value of the roughness number is N7-N8 in the range of 1.6 μm-3.2 μm.
ANALISA KEBUTUHAN DAN SPESIFIKASI TEKNIS POMPA UMPAN HYDROLIZER PADA PUSRI EFFLUENT TREATMENT PLANT Marbun, Richard
MACHINERY Jurnal Teknologi Terapan Vol. 4 No. 2 (2023): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.8085547

Abstract

PT Pupuk Sriwidjaja Palembang has a plant effluent treatment facility called Pusri Effluent Treatment (PET) Plant. The effluent streams come from Urea and Ammonia plants and are fed to PET using Effluent Hydrolizer Feed Pump GA-701. The objective of this analysis is to obtain the relevant and optimum pump’s technical requirements and specifications for accommodating the plant operating requirement. Using literature research, field research, and technical discussions, the optimal specifications of the GA-701 pump can be determined. The rated design point of the pump is 55 m3/hour at a head of 260.8 m, with an efficiency greater than 52.9% and an NPSHr less than 9.6 m. For reliability, the pump construction type is a between-bearing multistage type with SS316 material for the wetted parts and supported by the use of a mechanical seal with API Flush Plan 32.
ANALISIS PENGARUH TOTAL DRY SOLID BLACK LIQUOR TERHADAP EFISIENSI RECOVERY BOILER Sumarna, Herlin; Hidayati, Baiti; Ramadhoni, Tri Satya; Okviyanto, Toni; Anwar, Zainuri; Rifa’i, Ahmad Imam
MACHINERY Jurnal Teknologi Terapan Vol. 4 No. 2 (2023): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.8085820

Abstract

In the pulp and paper industry, a large amount of biomass (wood) has been used and produces by-products or residues resulting from the industry including wood bark, remaining logging and black liquor which is one of the main biomass resources that can be used for energy purposes. Aside from being a fuel, the recovery boiler process can convert black liquor into green liquor, where green liquor will be needed in the pulp production process. Writing this journal aims to determine the effect of total dry solids in black liquor on the efficiency of recovery boilers. The analysis was carried out using energy calculations in the recovery boiler for five days. From the calculation results it is known that there is a decrease and increase in boiler recovery efficiency, this is caused by several factors, including the heat absorption process experienced by the boiler feed water, the mass of black liquor, and the percentage of total dry solids. The total dry solid will affect the water content that will enter the combustion chamber, the higher the % TDS the more water content will enter the combustion chamber and this will affect the recovery efficiency of the boiler. The highest boiler recovery efficiency calculation results occurred on the first day, namely 65.24% and the lowest boiler recovery efficiency calculation results occurred on the fourth day, namely 62.96%.
ANALISA PENGARUH KECEPATAN PUTARAN PADA MESIN PENGADUK BAHAN UNTUK PUPUK ORGANIK DAN MEDIA TANAM TERHADAP WAKTU DAN HASIL PUTARAN (Di KOREM 044/GAPO, Desa Rambutan Kabupaten Banyuasin) Agus, Rizsky Agus Frasdianata; Azharuddin, Azharuddin; Effendi, Sairul
MACHINERY Jurnal Teknologi Terapan Vol. 4 No. 3 (2023): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.10122250

Abstract

This mixing machine for organic fertilizers and planting media is made to make it easier for farmers and industry to mix organic fertilizers and planting media, so that the estimated time of mixing materials for organic fertilizers and planting media by manual method which takes a relatively long time can be minimized, it is necessary to have a the tool is technically and economically acceptable by the communityThe method used is an experimental method by designing machines directly at the Polsri Mechanical Engineering workshop.This study uses technical analysis calculations as data calculations and analysis which consists of 5 kg of organic waste + 30 liters of water with a time variation of 2 minutes, 4 minutes, 7 minutes, and 9 minutes using a power of 2650 rpm. Each treatment was repeated 4 (four) times so that 15 trials were obtainedIn an average time of 5.5 minutes, it produces 33.44 liters of material for liquid organic fertilizer that has been stirred. Then it can be seen that the efficiency of the material mixing machine for organic fertilizer and planting media 42.80%
DESAIN JUMLAH TABUNG & SENSOR DALAM RANCANG BANGUN FIRE SUPPRESSION SYSTEM Syahrial, ikbal; Abdurrahman, Tofan
MACHINERY Jurnal Teknologi Terapan Vol. 4 No. 3 (2023): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.10122201

Abstract

The industrial sector is at high risk of fire hazards, so a system is needed to protect assets and workers. This research aimed to develop an effective system. The study used a method that utilized the effectiveness of an infrared sensor in a 300 square meter room. The sensor was placed 1 to 7 meters from the candle flame. The results showed that the room was highly effective if five sensors were installed, each at a radius of 4 meters, and two fire extinguishing system tubes were mounted on a 3-inch diameter pipe. The system's response time was still within the standard 10 seconds.
ANALISA EFISIENSI THERMAL BOILER TIPE CIRCULATION FLUIDIZED BED DI PLTU 3x10MW Jihan Syalsabila; Hendradinata , Hendradinata; Fenoria Putri; Safe’i, Safe’i; Siproni, Siproni; HB, Indra
MACHINERY Jurnal Teknologi Terapan Vol. 4 No. 3 (2023): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.10122406

Abstract

The need for electrical energy is increasing with economic growth. One of the government's efforts to increase electricity production is with the existence of Steam Power Plants. Boiler or steam generator a tool utilized to generate steam which consists of two important components, namely a heating system to generate heat from burning fuel and a system that converts water into steam. The percentage of boiler performance is the percentage of energy absorbed by the steam boiler with fuel input energy. Boiler performance greatly affects the performance of a PLTU where the use of fuel affects the steam produced. This research was carried out using the direct method by taking daily boiler log sheet data for 2 months, namely April and May, using coal calorific values, namely 5615 kcal/kg and 5654 kcal/kg. The results, the highest boiler efficiency was 55.95% with a calorific value of 5654 coal while the lowest boiler efficiency was 36.29% with a calorific value of 5615 kcal/kg. From the results obtained, it can be concluded that the steam flow rate is not constant and the excessive use of fuel causes boiler efficiency to experience conditions that are not optimal. The calorific value of coal is affected by the water content contained in the coal. The higher the water content, the more energy is required for the coal burning process.
Analisis Kegagalan Pipa Embedded Pada PLTU TE 3x10 MW Kiagus M. Rizky Khadafi; Hendradinata, Hendradinata; Fenoria Putri; Ogi Meita Utami
MACHINERY Jurnal Teknologi Terapan Vol. 5 No. 2 (2024): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.12735933

Abstract

Pipa merupakan salah satu equipment terpenting didalam boiler. Memperbaiki kebocoran pada pipa boiler membutuhkan banyak waktu dan biaya perawatan yang tinggi. karena itu kerusakan pipa pada boiler harus segera diperbaiki dan dicegah, agar tidak terjadi. Kebocoran pada pipa dikarenakan kurangnya ketahanan suatu material dalam menahan pressure fluida dan penipisan ketebalan, maka pada penelitian ini menggunakaan pengujian struktur mikro untuk mengetahui kandungan suatu material. Dari hasil pengujian yang didapat perlit pipa yang bocor 48% dan pipa yang tidak bocor 31,5%, sedangkan hasil dari ferrite pipa yang bocor 43,5% dan pipa yang tidak bocor 35%.maka pipa yang bocor tingkat Pada struktur mikro sampel pipa embedded yang tidak bocor didapatkan hasil kandungan perlit sebesar 31,5% sedangkan kandungan ferrit didapatkan sebesar 35%, maka dapat disimpulkan kandungan baja tersebut bersifat lunak dan didapatkan nilai gran size atau butiran fasa struktur mikro sebesar 7,24071. Pada struktur mikro sampel pipa embedded yang bocor mempunyai kandungan perlit sebesar 48% lebih tinggi kandungan perlit, dibandingkan kandungan ferrit lebih rendah dari perlit dengan nilai 43,5% sehingga baja tersebut mempunyai tingkat kekerasan yang cukup tinggi, yang disebabkan oleh perlit, dan didapatkan nilai gran size atau butiran fasa struktur mikro sebesar 5,9039.
PERANCANGAN TURBIN ANGIN SUMBU VERTIKAL SEBAGAI PEMBANGKIT LISTRIK (SKALA LABORATORIUM) Meidian Pratama, Risco; arifin, Fatahul; Sundari, Ella; Okviyanto, Toni; Yahya, Yahya; Martomi, Eka Satria; Firdaus, Firdaus
MACHINERY Jurnal Teknologi Terapan Vol. 4 No. 3 (2023): Machinery: Jurnal Teknologi Terapan
Publisher : Politeknik Negeri Sriwijaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.10122311

Abstract

Wind is one of the newest energy sources that is becoming increasingly popular nowadays. The use of wind energy can be converted into electrical energy for wind turbine cells. However, there are two types of wind turbines, namely horizontal and vertical. Holistic wind turbines are usually used in one direction while vertical wind turbines are used in all directions. The shape of the blades and the number of wind turbine blades greatly influence the power produced. So the research this time is to find out the influence of the blade shape that has been varied and the number of blades with wind speeds of 2.5 m/s, 3 m/s, 3.5 m/s and 4 m/s on the resulting generator power so that the efficiency results What has been obtained can be designed to design wind turbines with varied blade shapes. Testing was carried out in a laboratory designed independently with a wind source using a fan and Dimmelr air conditioner. The results of tests that have been carried out have the highest gelnelratolr power known at 4 blades with a wind speed of 4 m/s with a power value of 0.34 watts while the smallest gelnelratolr power is known at 2 blades with a wind speed of 2.5 m/s with rated power 0.04 Watt. So that the research results from all the tests, the highest efficiency value was obtained at 4 blades with a wind speed of 2.5 m/s with a value of 24.4% and the lowest efficiency value was obtained at 2 blades with a wind speed of 3 m/s 6, 4 %.

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