Abstract:In order to solve the lack of fusion, A-MAG welding was invented, which obtained welded joints of
high quality. The experiment results show that surface appearance of A-MAG weld, internal quality of welding joint
and the welding operation perform very well. Experiments also show that the A-MAG welding can improve weld pene鄄
tration, compared with MAG welding on the same heat input. The tensile property and bending strength of A-MAG
are not reduced while impact strength is improved, especially in the HAZ. Dimples size of A-MAG welded joint frac鄄
ture becomes finer. It is shown that the active MAG welding can improve the welding quality and weld penetration of
weathering steel, which has the value of engineering application.
