Which component of a TIG torch holds the tungsten electrode in place?

The component of a TIG torch that holds the tungsten electrode in place is called the collet. The collet is a precise fitting that grips the electrode securely, ensuring proper alignment and stability during the welding process. This is crucial because the tungsten electrode needs to maintain its position for optimal performance, as it creates the arc needed for welding.

In TIG welding, the electron flow from the tungsten electrode produces the heat that melts the base materials being joined. If the electrode is not held securely, it could lead to inconsistent arc stability and poor weld quality. The collet allows for easy replacement of electrodes while ensuring that they remain firmly in place during operation.

The other components—such as the nozzle, which directs the shielding gas, and the handle, which provides a grip for the welder—serve different functions and do not play a role in holding the tungsten electrode. The electrode holder, while it may seem related, is not a standard term used in the context of TIG welding; instead, its function is typically associated with other welding processes. Thus, the collet is the designated part that specifically holds the tungsten electrode in TIG welding.