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What is the droplet transfer mode in tungsten inert gas welding?
It seems like the droplet isn’t in direct contact with the base material! Will it also be a short-circuit transition? (For example, in stick welding and gas metal arc welding, the welding material is in direct contact with the base material.)
1. Generally speaking, in shielded metal arc welding, the form of droplet transfer is not discussed, as the definition of droplet transfer includes the concept of arc heat, which refers to the heat generated by the arc when the welding material is used as an electrode. In non-melting electrode welding, that is tungsten inert gas welding, the welding material is melted by the heat of the electrode arc; the electrode itself does not melt. The transition mechanism is not greatly influenced by key welding process parameters, nor by the welder’s skills. If classification is necessary, it can be considered similar to the concept of free transition. 2. As I recall, the process of automatic TIG welding (with or without pulsing) mentions the forms of droplet transfer. Other efficient welding processes that have evolved from TIG welding also refer to droplet transfer; in these cases, the form of droplet transfer differs significantly from that in conventional manual welding. For example, the droplet transfer in the free transfer mode changes to a fine-stream transfer or even a jet transfer. Nevertheless, this is still a way of using the concept of droplet transfer commonly applied in shielded metal arc welding to describe these characteristics.
The welding materials here are not connected to the circuit, so there is no short circuit. . . .
Thank you for your detailed reply! Thank you!