Banca de DEFESA: VITOR MIGUEL ALMERÃO RODRIGUES

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : VITOR MIGUEL ALMERÃO RODRIGUES
DATE: 17/04/2025
TIME: 09:00
LOCAL: Campus Caxias do Sul - meet.google.com/arb-qprm-nck
TITLE:

OPTIMIZATION OF WELDING PARAMETERIZATION PERFORMED by HYPER DIP-PULSE PROCESS ON SAE1020 STEEL PLATES WITH AN EMPHASIS ON THE TORCH MOVEMENT SPEED

KEY WORDS:

Welding. Hyper Dip-Pulse. Waveform. Controlled transfer. Microstructural characterizations.

PAGES: 72
BIG AREA: Engenharias
AREA: Engenharia de Materiais e Metalúrgica
SUBÁREA: Metalurgia de Transformação
SPECIALTY: Soldagem
SUMMARY:

The Hyper Dip-Pulse pulsed welding process, found in Panasonic Tawers welding sources, stands out for its ability to control the transfer of molten material and the shape of the arc. To improve process efficiency and increase welding speed, this work aims to customize the Hyper Dip-Pulse current curve, with the purpose of reducing production cycle times and, consequently, increasing productivity in assembly lines involving welding. The work consisted of studying some variables of the process curve that influence the molten pool and solidified bead and evaluating the results, adjusting the parameters to maintain the quality of the welded bead. Welding is performed exclusively by means of a robotic arm and the base metal chosen for the study of this process was SAE 1020. Optical microscopy characterizations and hardness profile were performed on the weld beads. Vickers hardness tests started from the molten zone to the heat-affected zone, generating the hardness profile of the samples. After a detailed analysis, it was identified that the PPEAK -200, IP +200 and PFREQ +100 variables of the curve of this process presented positive characteristics after the proposed changes, making them candidates for new parameters to achieve the objectives of increasing the welding speed. The best configuration obtained, being the mixture of PFREQ+100 with IP+200, was determined based on the criteria established during the evaluation process, which consisted mainly of maintaining the original physical characteristics of the bead and the absence of defects pertinent to welding processes.

COMMITTEE MEMBERS:
Presidente - CLEBER RODRIGO DE LIMA LESSA
Interno - PAULO ROBERTO JANISSEK
Externo à Instituição - NILO NOGUEIRA DA SILVA - UFMG
Externo à Instituição - GUILHERME VIEIRA BRAGA LEMOS - UFRGS