Patent ID: 7348518

Claim:
A welding apparatus comprising: a welding machine for outputting welding electric power to between a base metal and a welding wire; and a controller for issuing a welding completion command and a wire fusion detection command to the welding machine, wherein the welding machine includes a communication unit for effecting communication with the controller, a storage unit for storing the welding completion command and the wire fusion detection command, a welding output control unit for effecting fusion prevention processing of the welding wire in case that the storage unit stores the welding completion command, and a welding wire fusion detection unit for detecting fusion between the base metal and the welding wire after the fusion prevention processing in case that the storage unit stores the wire fusion detection command, wherein the communication unit receives the welding completion command and the wire fusion detection command from the controller and transmits a result of the welding wire fusion detection to the controller.