| 摘要 |
PROBLEM TO BE SOLVED: To provide a means for inexpensively and easily determining a root groove-width in welding.SOLUTION: The problem is solved by a system for detecting root groove-width, which comprises: a machine for inserting a welding wire into a groove to be welded; and a machine for detecting the positions of both side edges of the groove by shaking the welding wire in the groove-width direction in a state of halting a welding machine or a member to be welded. |
