Pengaruh Cutting Speed dan Laser Power Proses Fiber Laser Cutting Terhadap Kekasaran Permukaan Pada Baja AISI 1040 Dengan Ketebalan 6mm

Rahmadianto, Febi
Pohan, Gerald A.
Yanuar, Kenzha

Jurnal Teknik
Vol 23 No 2 (2025): Jurnal Teknik

Surface roughness is a measure of microscopic irregularities on a material's surface that affects the performance, service life, and aesthetics of a product. This study analyzes the effect of cutting speed and Laser Power in the fiber Laser Cutting process on the surface roughness of 6 mm thick AISI 1040 steel. The method used was true experimental research with variations in cutting speed (500, 1000, 1500 mm/min) and Laser Power (80%, 90%, 100%). The results show that the combination of 1000 mm/min cutting speed and 80% Laser Power produced the lowest roughness of 2.3 µm, while the combination of 500 mm/min and 90% produced the highest roughness of 29.36 µm. Increasing Laser Power generally increases roughness, except at 100% Laser Power with 500 mm/min cutting speed which decreased due to more uniform material melting. The conclusion of this study is that optimal parameters (cutting speed 1000 mm/min and Laser Power 80%) produce a smooth surface. These findings can be a reference for the manufacturing industry in improving product quality through Laser Cutting process optimization.