CO2 arc welding is a widely used welding method, which has advantages of high
efficiency, low energy consumption, low hydrogen, insensitive to rust. Particularly,
the short-circuit metal transfer is being applied in sheet welding and all position
welding. So people are stimulated to do a further research on the drop transfer to find
its principle rules.
Analysis of the signal in the process of metal transfer is of great significance for
selectio...