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Pradana, Ilham Wahyu
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Engineering Mechanical Engineering

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Analisis Proses Laser Cutting dengan Variasi Cutting Speed, Jarak Focusline, dan Gas Pressure Terhadap Kekerasan dan Kekasaran Material MS SPHC Nugraha, Aditya; Pradana, Ilham Wahyu; Nugroho, Yohanes; Nugroho, Adi
JMPM (Jurnal Material dan Proses Manufaktur) Vol. 7 No. 2 (2023): Desember
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v7i2.19459

Abstract

Laser cutting merupakan teknologi pemotongan sheet metal menggunakan media laser yang dipadukan sistem CNC. Permasalahan proses laser cutting yaitu kecacatan permukaan hasil pemotongan dan peningkatan kekerasan material pada area permukaan hasil pemotongan laser cutting, disebabkan oleh ketidaksesuaian variasi parameter. Parameter laser cutting dalam penelitian ini yaitu cutting speed, jarak focusline, dan gas pressure. Variasi parameter cutting speed yang diteliti adalah 1440 m/min, 1620 m/min, dan 1800 m/min. Variasi jarak focusline yang diteliti yaitu 5,5 mm, 6,0 mm, dan 6,5 mm. Variasi parameter gas pressure yang digunakan yaitu 0,5 bar, 0,7 bar, dan 0,9 bar. Metode Taguchi digunakan untuk mendapatkan variasi dengan nilai kekerasan dan kekasaran permukaan material yang minimum. Kekasaran permukaan diuji menggunakan surface roughness tester, kekerasan permukaan diuji menggunakan hardness tester brinel. Besarnya pengaruh setiap parameter di analisis menggunakan metode ANOVA. Hasil penelitian menunjukkan parameter jarak focusline memiliki pengaruh terbesar terhadap kekasaran permukaan dengan persentase 50,385 %, parameter gas pressure adalah parameter yang paling berpengaruh terhadap kekerasan permukaan dengan persentase 54,241 %. Nilai kekasaran minimum dapat dicapai dengan parameter cutting speed 1800 m/min, focusline 5,5 mm, dan gas pressure 0,5 bar. Nilai kekerasan minimum dicapai dengan cutting speed 1800 m/min, focusline 6,5 mm, dan gas pressure 0,5 bar.
Analisis Proses Laser Cutting dengan Variasi Cutting Speed, Jarak Focusline, dan Gas Pressure Terhadap Kekerasan dan Kekasaran Material MS SPHC Nugraha, Aditya; Pradana, Ilham Wahyu; Nugroho, Yohanes; Nugroho, Adi
JMPM (Jurnal Material dan Proses Manufaktur) Vol. 7 No. 2 (2023): December
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jmpm.v7i2.19459

Abstract

Laser cutting is a sheet metal cutting technology using laser media combined with a CNC system. The problems of the laser cutting process are defects in the surface of the cutting product caused by a mismatch of parameter variations. The parameters of laser cutting in this research are cutting speed, focusing distance, and gas pressure. Variations in the cutting speed parameters studied were 1440 m/min, 1620 m/min, and 1800 m/min. The variations in the focusing distance studied were 5.5 mm, 6.0 mm, and 6.5 mm. Variations in the gas pressure parameters used are 0.5 bar, 0.7 bar, and 0.9 bar. The Taguchi method is used to obtain variations with minimum hardness and surface roughness values of the material. Surface roughness was tested using a surface roughness tester; surface hardness was tested using a brine hardness tester. The magnitude of the influence of each parameter is analyzed using the ANOVA method. The results showed that the focusing distance parameter had the most significant effect on surface roughness, with a percentage of 50.385%, and the gas pressure parameter was the most influential parameter on surface hardness, with a percentage of 54.241%. The minimum roughness value can be achieved with a cutting speed of 1800 m/min, focusing of 5.5 mm, and gas pressure of 0.5 bar. The minimum hardness value is achieved with a cutting speed of 1800 m/min, a focusing of 6.5 mm, and a gas pressure of 0.5 bar.
Co-Authors Adi Nugroho ADITYA NUGRAHA Aditya Nugraha Nugroho, Yohanes Nugroho, Yohanes TH Adi Nugroho