TORCH FOR TUNGSTEN INERT GAS WELDING

摘要

A torch for tungsten inert gas welding is provided, in particular a narrow gap head for tungsten inert gas narrow-gap welding. In a housing made of metal, an electrode unit is retained by an electrode retainer and a cooling device for cooling the electrode unit is present. Liquid cooling medium can be conducted into the electrode retainer and back out of the electrode retainer through the cooling device. The cooling device includes at least one electrically conductive partition within a jacket of the electrode retainer for forming cooling channels, at least the at least one partition being electrically connected to the electrode unit. Furthermore, an outer surface of the electrode retainer is provided with an insulating layer at least in the area of the housing, which housing surrounds the electrode retainer.

主权项

1. A torch for tungsten inert gas welding, comprising:
an electrode unit held in a housing made of a metal by an electrode holder, and a cooling device for cooling the electrode unit, by which liquid cooling medium can be conducted into the electrode holder and out of the electrode holder again, wherein the cooling device comprises at least one electrically conductive separating wall within a shell of the electrode holder for forming cooling channels, at least the at least one separating wall being electrically connected to the electrode unit, and an outer surface of the electrode holder is provided with an insulating layer, at least in the region of the housing surrounding the electrode holder.