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All Journal IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Prosiding Seminar Nasional Teknik UISU (SEMNASTEK)
Rosehan Rosehan
Universitas Tarumanagara
Automotive Engineering Energy Engineering Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Penentuan Parameter Pemotongan Optimal Proses Milling Terhadap Kekasaran Permukaan Baja SKD11 Dengan Metode Taguchi Muhammad Sobron Yamin Lubis; Steven D; Alfred Briantio; Rosehan Rosehan
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 1 No 3 (2022): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v1i3.33

Abstract

In the milling process, good surface roughness conditions are indicated by low surface roughness values. Surface roughness is formed by the friction of the cutting tools on the surface of the workpiece. Increasing the use of cutting parameters will invariably increase the applied frictional force and faster scratching; however, if there are three cutting parameters used, such as cutting speed, infeed speed, and depth of cut, it is difficult to determine which parameter contributes to the resulting value. Good surface roughness. So based on this, to find out the optimal cutting parameters, this research was carried out. The study was carried out using a milling machine. In the SKD11 Steel material milling process, the surface roughness value of the workpiece is an indicator in determining a good surface condition. SKD11 steel material has a hardness value of 16-20 HRC and is a type of tool steel commonly used as cutting tools, Deep Drawing molds, Drawing Cones, and Compression Molding Dies. By varying the cutting parameters, the workpiece is formed using a milling machine. The cut workpiece is then measured for surface roughness using a surface test tool. Furthermore, to analyze the optimal cutting parameter values for minimal surface roughness, the Taguchi method is used. The results showed that the optimal surface roughness value was obtained from a combination of cutting parameters with a spindle speed of 1800 r/min, a feed rate of 256 mm/min, and a depth of cut of 0.25 mm.
OPTIMASI PARAMETER PROSES LASER CUTTING TERHADAP KEKASARAN PERMUKAAN MATERIAL ACRYLICTYPE CLEAR DENGAN MENGGUNAKAN METODE TAGUCHI Novan Satyawardhana; M. Sobron Yamin Lubis; Rosehan Rosehan
Prosiding Seminar Nasional Teknik UISU (SEMNASTEK) SEMNASTEK UISU 2022
Publisher : Fakultas Teknik Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (613.454 KB)

Abstract

Laser cutting is one of the alternatives in answering the technological challenges of this era that offers a significant advantage on conventional cutting methods. The background problem of this study is optimization regarding the quality of cutting results from the laser cutting process on acrylic materials.The experiments aimed to get a minimum roughness value, and the method used was the Taguchi method. The parameters used are cutting speeds of 6, 8, 10 (mm/s), laser focus points of 4.6.8 (mm), and gas pressures of 90, 100, 110 (mm/s).The three parameters were varied using Taguchi's experimental design and obtained 9 variations of parameters, after an experiment, the roughness of the cut surface was carried out to obtain the surface roughness value of each parameter variation. The highest roughness value was found in experiment 2 with an average roughness value of 1.015 μm and the lowest roughness value in experiment 7 with an average roughness value of 0.225.After data processing, optimal parameters were obtained, namely gas pressure of 100 mm / s, cutting speed of 8 mm / s and focal point of 8 mm / s and the most dominant influence factor, namely gas pressure parameters with a value of 7,494.
PERANCANGAN PROTOTYPE CETAKAN CUTTING TOOL INSERT BENTUK RHOMBIC Ardy Pratama; M. Sobron Y. Lubis; Rosehan Rosehan
Prosiding Seminar Nasional Teknik UISU (SEMNASTEK) SEMNASTEK UISU 2022
Publisher : Fakultas Teknik Universitas Islam Sumatera Utara

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (707.522 KB)

Abstract

Seiring perkembangan zaman, terjadi perkembangan dalam berbagai bidang kehidupan, salah satunya adalah pada bidang industry manufaktur. Salah satu bidang yang berkembang pada industry manufaktur adalah pada proses pemotongan yang mana pada masa ini sudah dilakukan dengan menggunakan mesin potong. Pada mesin potong bagian yang berperan penting untuk memotong material dalah mata pahat, bentuk dan ukuran dari mata pahat pun berbeda-beda sesuai dengan kebutuhan, salah satunya adalah mata pahat berbentuk persegi. Proses pembuatan mata pahat ini pun berbeda-beda, bergantung pada jenis bahan yang digunakan, salah satu bahan mata pahat adalah keramik, untuk pembentukan mata keramik memerlukan cetakan.Penelitian ini dilakukan bertujuan untuk mendesain mold mata pahat. Metode yang dilakukan melalui perhitungan dan pembuatan design dengan menggunakan software Autodesk fusion 360. Bentuk cetakan yang di desain yaitu bentuk persegi empat. Bagian-bagian cetakan terdiri dari anvil, mold dan punch. Untuk proses pembentukan keramik diperlukan bahan serbuk keramik alumina seberat 5 gr. Dari hasil perancangan diperoleh gambar desin mold yang terdiri dari anvil, mold dan punch. Dan bahan yang digunakan adalah jenis tool steel.
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 Alfred Briantio Ardy Pratama Muhammad Iqbal Gimastian Novan Satyawardhana Relvin Sobron Lubis Sobron Lubis Steven D Yonathan Farrel Marcelino