What are the differences between Manual, Machine and Automatic Welding?
According to the ASME B&PV Code, Canadian CSA W59 and CSA W47.1, there are four modes of welding process applications:
1. Manual Welding: Welding wherein the entire welding operation is performed and controlled by hand.
2. Semi- Automatic Welding: Welding with the equipment which controls only the filler metal feed. The advance of the welding is manually controlled.
3. Machine (Mechanized) Welding: Welding with equipment which has controls that can be adjusted by the operator, or adjusted under the welding operator’s direction, in response to changes in welding condition. The torch, gun, or electrode holder is held by a mechanical device. The mechanical device that holds the gun, torch or electrode can be a robot.
4. Automatic Welding: Welding with equipment which performs the welding operation without adjustment of the controls by a welding operator. The equipment may or may not perform the loading and unloading of the work.
The codes also define welder as the person who performs manual and semi-automatic welding and a welding operator as the person who operates mechanized or automatic welding equipment.
The SWR is a robot that can do machine welding in collaboration with a welding operator.