Alternating current with high frequency is used
Alternative current with low frequency is used
Direct current is used
Any of these
Carbon arc welding
Submerged arc welding
TIG arc welding
MIG arc welding
Carbon electrode and the work
Metal electrode and the work
Bare metal electrode and the work
Two tungsten electrode and the work
Neutral
Oxidizing
Carburising
None
Welding
Casting
Joining