WELDING DEVICE AND METHOD

To provide a welding device and a welding method which enable high quality welding to be performed efficiently in an automatic or semi-automatic manner without depending on skills of a welder.SOLUTION: A welding device according to a first embodiment of the invention includes: a welding torch 15 to weld welding object members 31, 32; a wire supply device 12 which supplies a flux-cored wire 20 and an active gas to the welding torch; a welding power source 13 which supplies a power source to the wire supply device and the welding torch; and a torch/welding object relative position variation machine 16 which can change a relative position relationship between the welding torch and the welding object members.SELECTED DRAWING: Figure 1 【課題】溶接士の技量に頼らずに、高品質で効率的な自動または半自動で実施できる溶接装置及び方法を提供すること。【解決手段】本発明の第１の態様に係る溶接装置は、溶接対象部材３１，３２を溶接するための溶接トーチ１５と、前記溶接トーチに対してフラックス入りワイヤ２０及び活性ガスを供給するワイヤ供給装置１２と、前記ワイヤ供給装置及び前記溶接トーチに対して電源を供給する溶接電源１３と、前記溶接トーチと前記溶接対象部材との相対的位置関係を変化させることのできるトーチ／溶接対象相対位置変動機１６とを備える。【選択図】図１