| 摘要 |
PROBLEM TO BE SOLVED: To provide a method and it's device that, however the material or plate thickness of a work (metal strip are changed), without changing a welding current and an arc length, corresponding to this change the welding width can be freely adjusted and easily and quickly. SOLUTION: The method for absorbing unnecessary arc on this invention in TIG welding apparatus which fixing cut end surfaces a1'.a2' of metal belts a1.a2 butting each other, connects the butting portion by arc welding, is characterized in that a setting plate 40 placed on the butting portion, in this setting plate 40 a slit 42 bored which has a desired width opened along the full length of the connecting line L of the butting portion, arc electric discharge A transferred along the slit 42 as performing arc electric discharge to the butting portion through the slit 42 from an electrode 20, thereby, as arc electric discharge A spattering outside of the slit 42 absorbed into the setting plate 40, arc welding is performed to the butting portion forming the shape of the slit.
|
