Table 3 Comparison of advanced GMAW concepts when used in DMW
From: Welding of dissimilar non-ferrous metals by GMAW processes
Control Technique | Limitation | Effect on the joint | Observations of applicability | |
|---|---|---|---|---|
Advanced and adaptive GMAW | Wave form control | If restricted to the wave form, the technique may only affect control of heat input and stability of the arc. | -Thickness control of IMCs | Very good capability |
-Dilution controlled | ||||
-Better heat treatment | ||||
Wave form and filler control | If restricted to the wave form and alternative wire motion, the technique may only affect control of heat input and stability of the arc. | -Thickness control of IMCs | High, excellent capability | |
-Dilution controlled | ||||
-Better heat treatment | ||||
-Lower HAZ | ||||
Conventional control | Limitations in control dramatically affect control of heat input, stability of the arc, and regulation of the flow gas. | -Highest thickness IMCs | Low capability | |
-Highest dilution | ||||
-Difficult to manage heat treatment | ||||