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All Journal IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA)
Lubis, Muhammad Sobron Yamin
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Automotive Engineering Energy Industrial & Manufacturing Engineering Materials Science & Nanotechnology Mechanical Engineering

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Analisis Pertumbuhan Keausan Pahat Pada Pembubutan Material Mild Steel Lubis, Muhammad Sobron Yamin; Riza, Abrar; Michel, John; Ariyanti, Silvi
IRA Jurnal Teknik Mesin dan Aplikasinya (IRAJTMA) Vol 2 No 3 (2023): Desember
Publisher : CV. IRA PUBLISHING

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56862/irajtma.v2i3.72

Abstract

The study of wear on tool blades when cutting metal is important because it influences work results and production costs. Increasing metal hardness demands durability and strength of the chisel bit. Long periods of use and high speeds can cause wear, damage the chisel, and affect the quality of the results and production costs. This research uses a CNC lathe with a carbide cutting edge to cut mild steel. The cutting speed varies between 170 to 190 m/min with a cutting pass of 0.3 mm/revolution, a cutting depth of 0.7 mm, and a wear criterion of 0.3 mm. Turning was carried out for 2.5 minutes, then wear was observed using an optical electron microscope. The results show abrasive wear on the side of the chisel blade (flank wear) due to friction. A cutting speed of 190 m/min took 7:25 minutes, 180 m/min took 8:09 minutes, and 170 m/min took 8:36 minutes. This research proves that cutting speed influences wear rates, with wear primarily caused by abrasive friction.
Analisis Hasil Pembentukan Kayu Billiard Menggunakan Mesin Bubut dan Mesin Router Relvin; Rosehan, Rosehan; Lubis, Muhammad Sobron Yamin
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 Marcelino, Yonathan Farrel; Lubis, Muhammad Sobron Yamin; 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 Gimastian, Muhammad Iqbal; Lubis, Muhammad Sobron Yamin; 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, Abrar Gimastian, Muhammad Iqbal Marcelino, Yonathan Farrel Michel, John Relvin Rosehan Rosehan, Rosehan Silvi Ariyanti