Comparing the cutting process using CO2 lasers and fiber lasers

Temeljna ideja ovog rada je pokazati razliku u kvaliteti reza između CO2 i fiber lasera. U radu je opisan proces laserskog rezanja, prikazana je podjela strojeva za lasersko rezanje koji se koriste u proizvodnji te su navedeni parametri koji utječu na kvalitetu obrade. Eksperimentalni dio rada proveden je u tvrtci Dundo-promet d.o.o. iz Jazvina u kojoj su izrezani uzorci legure aluminija AlMg3 različitih debljina. U radu je predstavljen postupak programiranja, rezanja uzoraka te mjerenja površinske hrapavosti uređajem Alicona. Mjerenjem površinske hrapavosti reza nastoji se utvrditi koji laser je pogodniji za rezanje spomenutog materijala te kako male promjene posmične brzine utječu na kvalitetu reza.The fundamental idea of this paper is to demonstrate the difference in cutting quality between CO2 and fiber lasers. The paper describes the process of laser cutting, presents the classification of laser cutting machines used in manufacturing, and outlines the parameters that influence the quality of processing. The experimental part of the study was conducted at Dundo-promet d.o.o. in Jazvine, where samples of the aluminium alloy AlMg3 with different thicknesses were cut. The paper introduces the programming process, cutting of samples and the measurement of surface roughness using an Alicona device. By measuring the surface roughness of the cuts, an attempt is made to determine which laser is more suitable for cutting the mentioned material and how small changes in the feed rate affect the quality of the cut