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INDONESIA
Traksi : Majalah Ilmiah Teknik Mesin
Published by Universitas Muhammadiyah Semarang
ISSN : 16933451     EISSN : 25799738     DOI : -
Core Subject : Science, Engineering,
Energy Engineering
TRAKSI (eISSN 2579-9738 / ISSN 1693-3451) adalah Majalah Ilmiah Teknik Mesin Universitas Muhammadiyah Semarang (UNIMUS) dengan cakupan bidang material teknik, konversi energi dan manjfaktur. Jurnal ini terbit 2 kali dalam satu tahun.
Arjuna Subject : -
Articles 10 Documents
 1 
Search results for , issue "Vol 23, No 2 (2023): TRAKSI" : 10 Documents clear
ESTIMATED TIME FOR CUTTING STEEL PROFILES USING A BANDSAW MACHINE IN THE REFINERY DEVELOPMENT MASTER PLAN FABRICATION PROCESS Abthal Mahdi; Deri Teguh Santoso; Iwan Nugraha Gusniar; Boni Sena
TRAKSI Vol 23, No 2 (2023): TRAKSI
Publisher : Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/traksi.23.2.2023.215-227

Abstract

Refinery Development Master Plan (RDMP) is a facility development project to increase the capacity of oil refineries, one of which is by building Pipe Rack. When making Pipe Rack with steel structure, time estimation is needed so that the fabrication process flow can run according to the planned time. One of the fabrication processes is the process of cutting profile steel using a Bandsaw machine. The estimated time of cutting profiled steel using a Bandsaw machine can be determined by the values that affect the cutting process so that initial data such as the value of cutting speed, feeding motion, sawblade type, and the type and dimensions of profiled steel to be cut are required. After knowing the initial data, the calculation of the estimated cutting time can be known with several equations. In the initial data, the feed motion is 5 mm / rotation with a sawblade length of 7600 mm and the dimensions of the profile steel to be cut are 400x200 mm. The machining time is 21.14 minutes with a cutting speed of 15,099.34 mm / minute. After obtaining the cutting speed value on the bandsaw machine, the estimated machining time of several variations of profile steel dimensions and different bandsaw machine feed motions can be determined. From the simulation results of several variation values of cutting speed and feeding motion, the longest cutting time is 21.28 minutes with a cutting speed of 15000 mm/minute and 47 minutes with a feeding motion of 2 mm/rotation. Meanwhile, the fastest cutting time is 10.64 minutes with a cutting speed of 30000 mm/min and 10.43 minutes with a feeding motion of 9 mm/rotation.
EFFECT OF HOLDING TIME IN THE PACK CARBURIZING PROCESS ON THE MECHANICAL PROPERTIES OF AISI 1045 STEEL Muhamad Denny Setiawan
TRAKSI Vol 23, No 2 (2023): TRAKSI
Publisher : Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/traksi.23.2.2023.239-246

Abstract

This study aims to determine the effect of holding time on the pack carburizing process using mixed media from coconut shell charcoal and beef bone powder with a composition of 70% coconut shell charcoal and 30% beef bone by volume. The pack carburizing process was carried out at a temperature of 950°C with a variation of heating time of 1, 3 and 5 hours, then a fast immersion process was carried out in water. To determine the effect of time eliminated on the process, hardness and metallographic tests were carried out. The test results showed that the chemical composition of the steel sample used in this study was AISI 1045 steel with a carbon content of 0.40%. In addition, the maximum average hardness test results were obtained for the material that underwent a solid carburizing process with a 5-hour elimination time of 346 HV (Hardness Rockwell), with the phases formed in the samples undergoing the pack carburizing process were ferrite, pearlite, and Partly there is a martensite phase.
PLC-BASED WAX COATING SYSTEM PLANNING FOR FOOD PACKAGING CARTONS Taufiq Hidayat; Nidia Lestari; Joko Waluyo; Venditias Yudha; Arif Budi Asih
TRAKSI Vol 23, No 2 (2023): TRAKSI
Publisher : Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/traksi.23.2.2023.162-171

Abstract

Packaging is the spearhead of marketing because it directly deals with consumers. Technological advances in the world of modern manufacturing and trading industries are competing to innovate to create the highest quality packaging. Paraffin wax coating, which is waterproof can provide resistance to packaging and the strength of a product so that protection is guaranteed against light, gas, harmful bacteria. The wax coating process without the use of large amounts of human labor requires a laminating system with a PLC program. Planning of this control system is supported by the selection of components based on the voltage on the PLC and ladder diagram simulation assistance with CX-Designer software. The simulation results of ladder diagram control system runs well and the application of ON OFF control using no NC instructions, temperature control thermostat, solenoid valve to open the valve in the chamber, and the calculation of the number of cartons that have been laminated with counter instructions and as an OFF signal on the motor.
EFFECT OF STEAM PRESSURE AND TEMPERATURE ON THE AMOUNT OF OIL PRODUCED IN A CITRONELLA OIL DISTILLATION MACHINE Zainuri Anwar; Ahmad Imam Rifa'i; Almas Nurzain
TRAKSI Vol 23, No 2 (2023): TRAKSI
Publisher : Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/traksi.23.2.2023.247-253

Abstract

One of the parameters that affect the citronella oil distillation process is the pressure and temperature of the steam. The aim of this research was to determine the optimal working pressure and temperature for the distillation process. The distillation method uses the direct steam type, by varying the pressure in the boiler, namely 2 bar, 2.5 bar and 3 bar. Steam temperature increases with increasing working pressure, namely 100 - 110ºC. The raw material for citronella used  5 kg with a long distillation process of 4 hours. The test results showed that the highest amount of oil and yield occurred at a pressure of 3 bar and a temperature of 110ºC, 19 ml and 0.32%, respectively. The color of the oil produced pale yellow to brownish yellow with a specific gravity of oil at 25ºC which is 0.878 gr/ml. Citronella oil has good quality according to the SNI 06-3953-1995 citronella oil quality standards.
EFFECT OF THIOSULFATE CONCENTRATION AND LEACHING TEMPERATURE IN AMMONIACAL THIOSULFATE LEACHING OF REFRACTORY SULFIDE GOLD ORE Rini Riastuti
TRAKSI Vol 23, No 2 (2023): TRAKSI
Publisher : Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/traksi.23.2.2023.152-161

Abstract

Thiosulfate as gold leach solution first studied in 1979 to found alternative of cyanide and mercury solution which are widely used in gold extraction industry although it’s negative impact for the environment. The ore sample is native ore from Bolaang Mongondow, North Sulawesi. According to Optical Microscope observation and LIBS characterization, there are pyrite compound which is one of the chacaracteristic of sulfide ore. According to X-ray fluorescence and Inductively Coupled Plasma, the ore contained about 14.62% Fe, 6.69% S, 0.15% Cu, and 0.27 ppm Au. This study aimed to determine the effect of thiosulfate concentration and leaching temperature in ammoniacal thiosulfate leaching of refractory gold sulfide ores on the solubility of gold. This research was conducted by laboratory scale of leaching method. The leaching result is then checked by Inductively Coupled Plasma (ICP). The concentration of thiosulfate (0.05M, 0.1M, and 0.2M) and the effect of temperature (250 C, 400 C, 600 C) were studied. Maximum gold extraction (62%) was obtained using 0.1M of thiosulfate concentrations at 400 C for 2 h with 20% of pulp density. Stirring speed and the pH of the aqueous solution were 400 rpm and 10, respectively. According to the results, it can be concluded that the concentration of Thiosulfate solution and leaching temperature will affect the dissolution of gold.
REDESIGN HELICAL GEAR TRANSMISSION OF MOTORCYCLE MIO M3 125 Daffa Surya Putra; Deri Teguh Santoso
TRAKSI Vol 23, No 2 (2023): TRAKSI
Publisher : Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/traksi.23.2.2023.254-285

Abstract

AbstrakRoda gigi pada sistem transmisi hanya mendapatkan momen puntir, terdapat kontak gigi antara pinion dan gear. Kontak antar gigi yang kasar dapat menyebabkan ketidakseragaman gaya kontak antar gigi dengan gigi yang lainnya, disebabkan karena ketika melakukan perancangan tidak teliti. Perancangan roda gigi miring meliputi menghitung dimensi, faktor keamanan, dan tegangan yang terjadi pada elemen mesin tersebut. Hal tersebut yang harus diperhatikan dalam melakukan perancangan roda gigi miring agar dapat dipakai dengan baik. Hasil perancangan pasangan roda gigi miring diperoleh modul 1,5mm, diameter kepala pinion 27,2mm sedangkan gear 75,4mm, torsi yang terjadi sebesar 0,84 kgf, dan tegangan yang terjadi rodagigi pinion sebesar 8,33 kgf/mm2 lalu roda gigi gear 21,08 kgf/mm2. Kata Kunci : Roda Gigi MiringAbstractThe gears in the transmission system only get a twisting moment, there is teeth contact between the pinion and gear. Contact between rough teeth can causing non-uniform contact forces between teeth and other teeth, caused when planning is not thorough. The design of the helical gear includes calculating the dimensions, safety factor, and stresses that occur on the machine elements. This must be considered in designing helical gears so that they can be used properly. The results of the design of the helical gear pair use a 1.5mm module, a pinion head diameter of 27.2 mm while the gear is 75.4mm, the torque that occurs is 0.84 kgf, and the stress that occurs on the pinion gear is 8.33 kgf/mm2 then the gear 21,08 kgf/mm2. Keyword : Helical Gear
BLADE VOLTAGE ANALYSIS OF PLASTIC CHEARING MACHINE USING SKD 11 MATERIAL USING AUTODESK INVENTOR SOFTWARE 2017 Bagas Siswantoro; Kardiman -; Ratna Dewi Anjani
TRAKSI Vol 23, No 2 (2023): TRAKSI
Publisher : Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/traksi.23.2.2023.185-214

Abstract

Plastic waste is a problem for all humans and animals because plastic is difficult to decompose by the soil, it takes a long time for plastic to decompose. Indonesia has a large population and every year it will continue to increase and the use of plastic in Indonesia will also continue to increase, especially plastic bottle waste. Plastic chopping knife is an important component for the results of shredding plastic waste, there are many types of chopping knives according to the desired chopping results. Knives must be declared strong and tough to chop plastic into powder or small granules. In order to meet the needs in accordance with the planned workings of the plastic chopping machine, a plastic chopper knife design was made using SKD 11 material with a load of 50kg, 100kg and 150kg, so research was made. inventor 2017 . The results obtained from the manual calculation of the von misses stress load of 50kg, 100kg and 150kg are 45,143.3 Mpa, 86,096.8 Mpa, 129,128.4 Mpa. The displacement obtained is 0.243 mm, 0.487 mm, 0.731 mm. The resulting safety factor is 10.41 ul, 5.46 ul, 5.32 ul. While the results of the static simulation with the same load in the inventor, the value of von misses stress is 63,928 MPa, 127,813 MPa, and 191,712 MPa. The displacement obtained is 0.1133 mm, 0.2266 mm, 0.3399 mm. the results of the simulation of the safety factor 7.5 ul, 3.6 ul, 2.5 ul. From the stresses that occur, the skd 11 material is declared safe because the value is still smaller than the yield strength, which is 470 Mpa.
GEOMETRIC INSPECTION OF PRIMARY AIR FAN ROTOR BLADES USING A LASER SCANNER MEASURING TOOL Mohamad Rofif Wafi Fadilah
TRAKSI Vol 23, No 2 (2023): TRAKSI
Publisher : Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/traksi.23.2.2023.286-310

Abstract

New technology related to geometry inspection instruments that have the characteristics of good accuracy, speed, and flexibility are done on Coordinate Measuring Machine. The use of a laser scanner as a measuring instrument has the advantage of the speed of acquisition so that it is suitable for inspecting components that have a complex surface. In this study, the profile measurement method in the Primary Air Fan rotor blade component which was classified as one of the turbo engines was examined. The focus of this research is the description of the tolerance inspection process line profile in general turbo engine blades, specifically the Primary Air Fan blade of the 660 MW Steam Power Plant with refer to the ISO TR 5460 using a 3D laser scanner measuring instrument. ISO TR 5460 is a technical report standard that contains guidelines for verifying geometry tolerance that are described at ISO 1101. The process of inspection of line profile geometry on turbo engine blades with 3D laser scanner measuring instruments generally works by comparing the reference data with measured data. Reference data is a CAD model while measured data is point clouds that have been carried out triangulation / meshing process obtained from the measurement results of measuring objects. The results of the inspection of the line profile tolerance on the Primary Air Fan blade indicate that in each section it was declared not passed the inspection. Keywords: Geometrical inspection, line profile tolerance, laser scanner, turbo engine blade, Primary Air Fan.
MECHANICAL STRENGTH ANALYSIS OF COPPER MATERIAL AND BRASS MATERIAL ON FISHING VESSEL PROPELLER Hanityo A Nugroho
TRAKSI Vol 23, No 2 (2023): TRAKSI
Publisher : Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/traksi.23.2.2023.172-184

Abstract

Starting from events that often have an impact on reducing the age of ships as well as cases of fishermen who often replace damaged ship propellers caused by corrosion. Corrosion that occurs in the propeller shaft of the ship results in material damage. Therefore, the author wants to update the ship's propeller by using copper material compared to brass so that a stronger material is used as a propeller. The results of the research on testing copper and brass show a test analysis. The results of the stress and strain tests on brass and copper materials yield almost the same results. With the same material quality, brass material is recommended to be used as a propeller because the price is cheaper compared to copper material.
ANALYSIS OF THE EFFECT OF BIOSOLAR FUEL AND PERTAMINA DEX ON POWER PERFORMANCE, TORQUE, AND DIESEL ENGINE FUEL CONSUMPTION Dandung Rudy Hartana; Haryanto Haryanto; Wahid Anwar
TRAKSI Vol 23, No 2 (2023): TRAKSI
Publisher : Universitas Muhammadiyah Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.26714/traksi.23.2.2023.228-238

Abstract

The fuel used in the engine significantly affects the engine's performance, so there is an improvement in the fuel quality from time to time. Especially for diesel motors, which initially only used diesel, have now been developed, namely biodiesel and Pertamina dex. For this reason, the performance testing of the diesel engine type 4JA1 was carried out using Pertamina dex and biodiesel fuels in the combustion engine laboratory of the Yogyakarta National Institute of Technology so that the performance parameters for each fuel were obtained. This study uses an experimental method with four engine speed variations, namely 1000 rpm, 2000 rpm, 2500 rpm, and 2500 rpm. The tool used in this study is a diesel engine type 4JA1 connected to a dynamometer to test the diesel engine's performance. The diesel engine's performance analyzed in this test is power, torque, and specific fuel consumption. The results showed that fuel-type materials significantly affect the performance of the resulting engine. Overall engine performance using Pertamina dex fuel is superior to biodiesel. Pertamina dex fuel performance generated power: 3,938 kW, 7,569 kW, 12,800 kW, 18,046 kW; torque 37,632 Nm, 48,216 Nm, 61.152 Nm, 68,992 Nm; fuel consumption 0.666 Kg/kWh, 0.647 kg/kWh, 0.511 kg/kWh, 0.262 kg/Kwh. Performance biodiesel fuel produced 2.854 kW, 6.954 kW, 9.518 kW, 11.795 kW; torque 27,273 Nm, 44,296 Nm, 45,472 Nm, 45,08 Nm; fuel consumption is 0.908 kg/kWh, 0.533 kg/kWh, 0.503 kg/kWh, 0.394 kg/kWh.

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