Percussive arc welding is the process of combining micro arc TIG welding with a mechanical “percussive” movement that forces the arcing components together. The heat from the arc creates two molten interfaces which, when pushed together, fuse as a weld and extinguish the arc, forming a butt weld.
The process is very quick and controllable and, as such, requires high-speed real-time control elements and a degree of programmable flexibility to deliver a manufacturing standard system.
Typical percussive arc welding applications are:
A frequent requirement and use of percussive arc welding is in blind butt welding within cavities or containers. In this instance, the diagram shows how a thermocouple can be welded to the inside of a tube through a small opening.
With this technique, the TIG welding capability can also be configured to “ball end“ the thermocouple prior to its placement and welding. Similarly, pins, stranded wires, solid wires, electronic components etc. can be butt welded in place with high-integrity, high-temperature resistant joints.
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