Influencia do uso do tecimento na geometria e na diluição dos cordões de solda realizados com o processo MIG/MAG com transferência metálica por curto-circuito empregando o eletrodo ernicrmo-3

Abstract

The aim this work is to evaluate the influence of arc oscillation on weld bead geometry (width, reinforcement, penetration, the ratio between reinforcement and bead width and dilution) deposited with AWS ERNiCrMo-3, with the intention of to help in the choice of the best welding parameters for operations weld overlay with nickel alloy through the GMAW process in a short circuiting transfer mode. It was carried out weldings of simple deposit of the electrode AWS ERNiCrMo-3 with diameter of 1,2mm on steel ASTM A-36 with dimensions of 200 x 50 x 6 mm. The tests were made in the form of a complete factorial of the welding parameters, which two arc oscillation types were used (linear and triangular weaving). The results showed that the use of arc oscillation promoted weld bead with low values of the ratio R/L and obtained low values of dilution arriving to the order of 2%.