Let’s understand these words first and then talk about them.
Argon arc welding, a non-professional term, generally refers to tungsten electrode argon arc welding, and generally refers to manual electrodeless argon arc welding.
Semi-automatic welding requires people, but the wire feeding is automatic. Secondary protection welding and melting electrode argon arc welding are both.
Manual arc welding generally refers to welding rods and has nothing to do with argon arc welding.
As for tungsten arc welding, there are semi-automatic ones and those with wire feeders.
There are also fully automatic, special welding machines, and robots.
After typing these words, the author would like to ask what kind of welding method?