| 摘要 |
PROBLEM TO BE SOLVED: To provide a simple and movable tube welding equipment which can omit an inert gas (a shield gas or a work gas) which is an essential element of a heat source type welding method, and further simplify the welding. SOLUTION: The welding is performed with an ultrasonic welding unit 1 and a welding unit 2 held in a pair via a locking tool 28. In addition, a tightening device 6 is driven to apply the pressure to the ultrasonic welding unit 1 and the welding unit 2 to perform the welding. |
