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All Journal Jurnal Energi Dan Manufaktur Syntax Literate: Jurnal Ilmiah Indonesia Jurnal Muara Sains, Teknologi, Kedokteran dan Ilmu Kesehatan Jurnal Ilmiah Teknik Industri Jurnal Bakti Masyarakat Indonesia Jurnal Ilmiah Teknik Mesin Poros Prosiding Seri Seminar Nasional IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Prosiding Seminar Nasional Teknik UISU (SEMNASTEK) Jurnal Pengabdian Mitra Masyarakat
Sobron Lubis
Prodi Teknik Mesin Fakultas Teknik Universitas Tarumanagara
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the Karakteristik Kekasaran Permukaan Cast Iron Pada Pembubutan Menggunakan Mata Pahat Keramik Alumina sobron yamin lubis
Jurnal Energi Dan Manufaktur Vol 6 No 01 (2023): April 2023
Publisher : Department of Mechanical Engineering, University of Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/JEM.2023.v16.i01.p04

Abstract

Proses pemotongan logam merupakan hal umum digunakan dalam pembuatan part mesin. Kekasaran pemukaan menjadi indikator terhadap kualitas suatu produk yang dihasilkan, semakin rendah nilai kekasaran pemukaan yang dihasilkan, maka kondisi permukaan benda kerja menjadi lebih baik. Bahan cast iron banyak digunakan pada suatu konatruksi mesin, karena sifatnya yang keras dan kuat, untuk melakukan proses pembentukannya dilakukan menggunakan jenis mata pahat yang tangguh dan kuat, jenis mata pahat tersebut adalah keramik. Penelitian dilakukan bertujuan untuk mengetahui karakteristik kekasaran permukaan benda kerja cast iron yang dihasilkan melalui proses pembubutan dengan menggunakan bahan mata pahat keramik. Penelitian dilakukan dengan menggunakan mesin bubut CNC. Terdapat berbagi jenis material keramik berbasis alumina digunakan yaitu keramik Al2O3 A-12, Al2O3 TiC, Al2O3 ZrO2, Al2O3ZrO2 (ZTA), Benda kerja yang dibubut adalah jenis gray cast iron memiliki diameter 75mm dan panjang 150 mm. Proses pembubutan dilakukan pada kecepatan pemotongan 348 m/min dan feeding 0.2 mm/rev, dan variasi kedalaman pemotongan 0.05, 0.10, 0.2, 0.4, 0.6 dan 0.8 mm. Setiap selesai proses pembubutan untuk satu kombinasi parameter pemotongan dilakukan pengukuran kekasaran permukaan cast iron menggunakan alat surface test. Hasil penelitian diperoleh bahwa nilai kekasaran permukaan yang terendah sebesar 0.08 µm menggunakan mata pahat keramik Al2O3 (dry) pada kedalaman pemotongan 0.05 mm. Nilai kekasaran permukaan benda kerja yang tertinggi diperoleh sebesar 9.932 menggunakan mata pahat keramik Al2O3 ZrO2 (ZTA) pada kedalaman pemotongan 0.6 mm.
Analisis Waktu dan Umur Pahat Karbide Pembubutan Pembuatan Tool Holder Material Mild Steel Septian Calvin Sasiang; Sobron Lubis; Rosehan Rosehan
Syntax Literate Jurnal Ilmiah Indonesia
Publisher : Syntax Corporation

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (376.248 KB) | DOI: 10.36418/syntax-literate.v8i1.11243

Abstract

Mesin CNC Bubut merupakan mesin yang digunakan dalam industri manufaktur untuk menghasilkan komponen untuk sektor teknik dalam jumblah besar dengan cepat. Penelitian ini bertujuan untuk mengetahui waktu proses pembuatan tool holder dan juga untuk mengetahui waktu dari umur pahat. Penelitian ini menggunakan cutting speed 190 m/menit, 180 m/menit, dan 170 m/menit, feed rate 0,3 mm/putaran, depth of cut 0,7 mm. Berdasarkan dari penelitian yang dilakukan untuk waktu pembuatan tool holder adalah 7:25 dan penggunaan pahat yang diperlukan untuk pembuatan satu tool holder adalah 1 buah. Nilai Ra yang didapatkan juga sangat berpengaruh dengan umur pahat.
Penentuan Parameter Proses Laser Cutting Terhadap Kekasaran Permukaan Material Acrylyc Muhammad Sobron Yamin Lubis; Agasha Wiyoso; Harry Wibowo; Silvi Ariyanti
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 2 No 2 (2023): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v2i2.43

Abstract

Cutting materials using a laser beam is one of the modern methods in machining processes to cut complex geometries in two dimensions using a laser beam. Laser cutting can be used in cutting acrylic materials. However, there are obstacles to producing good surface conditions. The use of appropriate process parameters dramatically affects the resulting surface roughness. Therefore, it is necessary to research to determine the parameters of the laser cutting process that are suitable for the surface conditions of the workpiece, which has a small surface roughness value. Three variations of process parameters were used, namely cutting speeds of 6, 8, and 10 (mm/s), laser focus points of 4,6,8 (mm), and gas pressures of 90, 100, and 110 (mm/s). The specimens that have been cut then measured the surface roughness using a surface test measuring tool. The measurement data is then analyzed using the Taguchi method. The results showed that the highest roughness value was found in the second experiment with a roughness value of 1.015 µm, and the lowest was in the seventh experiment with a roughness value of 0.225. To produce a small roughness value, the process parameters used are gas pressure 100 mm/s, cutting speed eight mm/s and focal point 8 mm/s, and the most dominant influence factor is the gas pressure parameter with a value of 7.494.
Pengaruh Kecepatan, Intensitas, Jarak Fokus Laser Grafir terhadap Kekasaran Permukaan pada Tumbler Stainless Steel 304 Kent Kurniawan; Rosehan; Sobron Lubis
POROS Vol. 18 No. 2 (2022): Jurnal Ilmiah Teknik Mesin POROS
Publisher : Program Studi Teknik Mesin Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/poros.v18i2.19190

Abstract

Dalam penelitian ini menggunakan mesin laser grafir 2 axis yang dengan menggunakan controller Arduino Nano Atmega328 dengan menggunakan 2 motor Stepper sebagai actuator  untuk menggerakan mesin terhadap sumbu Y dan X, dengan penggunaan laser jenis diode dengan daya 3000 mW. Permasalahan dari penelitian ini adalah pada saat ingin menggrafir suatu material baru dimana setiap operator mesin laser grafir harus melakukan beberapa kali eksperimen untuk menentukan berapakah parameter yang tepat untuk material yang akan dikerjakan sehingga akan menghasilkan hasil yang baik.Tujuan dari penelitian ini adalah untuk menentukan kombinasi parameter yang tepat pada proses grafir pada tumbler stainless steel 304 dan juga untuk mengetahui parameter apa yang paling mempengaruhi kekasaran permukaan pada tumbler stainless steel 304. Data dalam penelitian ini diperoleh dengan cara eksperimen terhadap mesin laser grafir dengan menggunakan 3 parameter pemesinan yaitu Jarak Fokus Laser, Kecepatan Grafir dan Intensitas Laser dengan masing-masing parameter memiliki 3 level variasi, serta dengan menggunakan metode Taguchi pada proses pengolahan data.Kesimpulan dari penelitian ini diperoleh hasil bahwa parameter yang paling berpengaruh yaitu kecepatan grafir dimana memiliki 95,96172 % dan mendapatkan kombinasi parameter yang trpat yaitu dengan kombinasi parameter sebagai berikut: jarak fokus pada 20 mm, kecepatan grafir pada 1500 mm/min dan intensitas laser pada 1000 mW. Kata Kunci: Tumbler Stainless Steel 304, Laser Grafir, Arduino Nano Atmega328, Metode Taguchi, Kombinasi Parameter.
PERANCANGAN MESIN PEMIPIH DAN PEMOTONGAN ADONAN MIE PENGGERAK MOTOR LISTRIK Ega Prasetya Hidayat; Januar Moch Izhardaz; Joshua Raharjo; Sobron Yamin Lubis
POROS Vol. 18 No. 2 (2022): Jurnal Ilmiah Teknik Mesin POROS
Publisher : Program Studi Teknik Mesin Universitas Tarumanagara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24912/poros.v18i2.25786

Abstract

Noodles are foods that we often encounter wherever they are, such as at street vendors, restaurants, and even instant food. This noodle flattening and cutting machine is a tool that is used to make it easier for producers or street vendors to make it easier to print their own noodles. Based on this, this design was carried out to produce a flattening machine design and cutting noodle dough using an electric motor. The design of the flattening and dough cutting machine is carried out by calculation and drawn using Autodesk Fusion 360 software. From the calculation, it is obtained that the electric motor used is 0.5 HP with a rotation of 1400 r/min. The motor drives 4 pulleys that are connected to a belt connected to each other, and has an efficiency value in the transmission system of = 95%
PELATIHAN DAN PENERAPAN TEKNOLOGI TEPAT GUNA BAGI PEMBUAT JAMU TRADISIONAL DI KAWASAN TANJUNG DUREN JAKARTA BARAT Sobron Lubis; Alifya Askolani Putri; Silvester Lam; Silvi Ariyanti
Jurnal Pengabdian Mitra Masyarakat Vol 2, No 2 (2023): Edisi Maret
Publisher : Universitas Islam Sumatear Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30743/jurpammas.v2i2.6762

Abstract

Health drinks made from spices or known as Jamu, can increase stamina to maintain a healthy body. One of the herbal medicine makers in the Tanjung Duren area is Mrs. Sri Lestari Rahayu, she was active in making herbal medicine during the pandemic. The herbal medicine business that was initiated during Covid 19 is increasing demand from consumers day by day, but not all of these requests can be fulfilled because the processing process is still done manually, especially in the process of cutting raw materials for spices. Based on this, community service activities are carried out. This activity is carried out by providing training on the use of cutting machines and slicing machines. The spice ingredients consist of ginger, lemongrass, turmeric and lemon, each weighing 1 kg. shavings are carried out using a shaved machine with an electric motor drive. After the shaving process, the pulp is separated from the herbal extract using a slicing machine. From the results of the shaving process, it was obtained that the processing time was faster (15 minutes) than before (120 minutes). The results of the spice shavings are very fine. The amount of spices produced can be increased so that consumer demand can be met.
Analisis Akurasi Dimensi Prototipe Cetakan Cutting Tools Insert Tri Angle Menggunakan Proses Pencetakan 3D Berbahan PETG Muhammad Sobron Yamin Lubis; Raylan Alexander; Gerard Theodorus; Salma Khaula Bazla; Muhamad Zaki Adika; Rifqi Andika Putra; Silvi Ariyanti; Muhammad Zulkarnain
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 3 (2025): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i3.343

Abstract

This study aims to analyze the dimensional accuracy of tri-angle cutting tool insert mold prototipes produced via PETG-based 3D printing. The printing process was carried out with predetermined printing parameters, and the resulting prototipes were measured and compared with the original design dimensions. The evaluation focused on the main dimensions of the insert to determine dimensional deviation and accuracy. The results indicate that PETG 3D printing can produce mold prototipes with satisfactory dimensional accuracy, though minor deviations were observed due to printing parameters and material characteristics. This study is expected to serve as a reference for using 3D printing technology as an efficient, cost-effective alternative for manufacturing cutting tool mold prototipes.
Analisis Hasil Pembentukan Kayu Billiard Menggunakan Mesin Bubut dan Mesin Router Relvin; Rosehan Rosehan; Muhammad Sobron Yamin Lubis
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 3 No 3 (2024): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v3i3.158

Abstract

Making billiard sticks is a production process that requires high precision to produce quality products. This research aims to analyze the comparative performance of various cutting tools in the turning process for making billiard sticks. Proper cutting tools are essential in the pool cue manufacturing industry to achieve precise and quality results. This research uses two types of processes: the turning and the routing machine processes. The turning process is carried out on rosewood/snorkelling (Dalbergia latifolia) woodworkpieces, which will be used as billiard sticks. This research aims to evaluate dimensional accuracy and production process time. The turning process is carried out by varying the cutting speed parameters and feed depth. This research focuses on optimizing lathes' use to produce stick dimensions that comply with international standards. The study showed that turning tapered wood in a lathe to make billiard sticks took longer (376.2 seconds) than using a router machine (225.6 seconds).
Pengaruh Kecepatan Potong Terhadap Kekasaran Benda Kerja Baja AISI 1018 pada Proses Pembubutan Kering Yonathan Farrel Marcelino; Muhammad Sobron Yamin Lubis; Rosehan Rosehan
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 2 (2025): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i2.209

Abstract

Cutting speed is one of the crucial parameters in the turning process that significantly affects the final quality of the workpiece surface. This study aims to evaluate the impact of cutting speed variations on the surface roughness level of AISI 1018 steel. The machining process was carried out using a chisel with a tip radius of 1.2mm, and the cutting speed was varied at three levels, namely 42m/min, 66m/min, and 105m/min. Surface roughness measurements were carried out using a Surface Roughness Tester. The experimental results showed that increasing cutting speed tended to decrease surface roughness. The lowest roughness value of 2.224 μm was obtained at a cutting speed of 105 m/min. This phenomenon occurs because at higher cutting speeds, cutting forces and vibrations are reduced, so that the machining process becomes more stable and produces better surface quality. This study shows that cutting parameters play an important role in optimizing the final results of conventional turning processes.
Pengaruh Variasi Tool Nose Radius Pahat Karbida Terhadap Kekasaran Permukaan Baja AISI 4140 Pada Proses Bubut Muhammad Iqbal Gimastian; Muhammad Sobron Yamin Lubis; Rosehan Rosehan
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 4 No 2 (2025): Agustus
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v4i2.216

Abstract

The turning process is one of the machining methods used to produce cylindrical material shapes. In this experiment, meticulous parameter variations were carried out to obtain optimal surface roughness values. The parameters that varied include the chisel angle and feed rate. The feed rates used were precisely set at 0.045 mm/rev, 0.05 mm/rev, and 0.056 mm/rev. The variations in the chisel angle used were 0.4 mm, 0.8 mm, and 1.2 mm, ensuring a comprehensive exploration of the parameter space. Meanwhile, the spindle speed was kept constant at 1120 rpm, and the cutting depth was set at 0.2 mm. After testing, the surface roughness values were obtained for each parameter variation. The lowest roughness value of 0.782 µm was obtained at a combination of a chisel angle of 0.4 mm and a feed rate of 0.045 mm/rev. This finding has practical implications, as it suggests a specific parameter combination that can be used to achieve optimal surface roughness. Meanwhile, the highest roughness value of 2.206 µm was found in the combination of a chisel angle of 1.2 mm and a feed rate of 0.045 mm/rev. From these results, it can be concluded that the parameters that produce the most optimal surface roughness are in the variation of a chisel angle of 0.4 mm and a feed rate of 0.045 mm/rev, with a roughness value of 0.782 µm.
Co-Authors Abrar Riza Agasha Wiyoso Alfarezi Audy Nugraha Alfred Briantio Alif.A.H. Emilza Alifya Askolani Putri Alifya P. A Alifya Putri Askolani Ardy Pratama Daniel Joachim Ega Prasetya Hidayat Gerard Theodorus Harley Anugrah Harry Wibowo Harto Tanujaya Januar Moch Izhardaz John Michel Joshua Raharjo Kelvin Ferdinand. T Kelvin Fernando Kent Kurniawan Kevin Raynaldo Raynaldo Mochamad Fahti Hawari Muhamad Zaki Adika Muhammad Farrell Mangkusubroto Muhammad Iqbal Gimastian Muhammad Zulkarnain Nabil Aditya Raylan Alexander Relvin Rico W Rifqi Andika Putra Rosehan Rosehan Rosehan Rosehan Rosehan Rosehan Rosehan Rosehan Rosehan Rosehan Rosehan Salma Khaula Bazla Sautma Panjaitan Septian Calvin Sasiang Silvester Lam Silvester. L Silvi Ariyanti Sofyan Djamil Sofyan Djamil Steven D Steven Darmawan Steven Darmawan Yonathan Farrel Marcelino