Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
DETERMINATION OF THE MATERIAL REMOVAL RATE ON A-36 STEEL USING A 1064 µm NANOSECOND PULSED FIBER LASER
Submission Author:
Santiago Javier Caraguay Correa , SC
Co-Authors:
Santiago Javier Caraguay Correa, Thiago Soares Pereira, Francisco Ratusznei, Miriam Parra, Christian Caraguay Correa, Milton Pereira, Fabio Antonio Xavier
Presenter: Santiago Javier Caraguay Correa
doi://10.26678/ABCM.COBEM2023.COB2023-0755
Abstract
Laser material removal, also known as laser micromachining, is a non-contact process, with high accuracy, repeatability and flexibility, making it advantageous over other microfabrication technologies. Laser material removal rate (MRR) is determined by the interaction between the laser beam and the material. However, due to the large number of parameters that can be adjusted in the process, laser energy is often used inefficiently. The study aimed to optimize the MRR of A-36 steel using a 1064 µm nanosecond pulsed fiber laser. The overlapping between pulses, the focal position and number of pulses per laser-ablated cavity were varied to optimize the MRR. The laser-ablated cavities’ profiles were measured using a stylus profilometer, and the ablation volume was determined using the average depth of the profile and the area of the cavity. The MMR was then calculated by the ratio between the volume of the removed material per pass. Scanning electron microscopy were performed to characterize the material surface after laser material removal. Results showed an increase of MRR with the increase of overlapping up to a certain limit. SEM images indicated that the parameters combinations influenced the surface morphology of the ablated cavities. Ultimately, high quality at high throughput MRR is demonstrated using optimized process parameters.
Keywords
Laser Material Removal Rate, Laser micromachining, Parameters Optimization, Fiber Laser, Surface Topography
