Eventos Anais de eventos
COBEM 2023
27th International Congress of Mechanical Engineering
Evaluation of Dissimilar Welds with the Temper-bead Technique Using Electrodes ER 316L and ER NiCrMo-3 on Steel ASTM A182 F22
Submission Author:
Larissa Cardoso , PA
Co-Authors:
Larissa Cardoso, Humberto Aguirre, Italo Figueiredo, Carlos Mota, Adelino Maia Neto
Presenter: Adelino Maia Neto
doi://10.26678/ABCM.COBEM2023.COB2023-1097
Abstract
An adequate procedure for the dissimilar welding must provide the buttering of the bevel which, through the temper-bead technique, enhances a thermal barrier capable of eliminating the problems of fraying the joint. The buttering interface in these welds is indicated as the most critical region of the joint due to the presence of high hardness phases, normally encountered in the coarse region of the heat affected zone (HAZ) and near the fusion line. The present work has objective to use the Higuchi and Higuchi Modified tests in the selection of operational parameters for welding controlled by the temper-bead technique in order to refine and to temper the coarse grains of the HAZ of the first layer. The coatings were deposited by the combination of two electrode wires, the ER NiCrMo-3 and the ER 316L, which used the GMAW (Gas Metal Arc Welding) process with pulsed current and with conventional current, respectively. As substrate the ASTM A182 F22 HSLA (High Strength Low Alloy) steel was used. The results showed the refinement and tempering of the HAZ of the first layer indicating the effectiveness of the technique used.
Keywords
Dissimilar Weld, Higuchi test, temper-bead technique
