Device for metal welding

A device for metal welding, comprising a shielding element (1) which allows visual monitoring of the working process but protects the eyes from light radiation, the shielding element being mountable on a user's head and having a video camera (5) disposed therein, the shielding element having a lens (6) mounted therein and the shielding element being free from any transparent glass at an eye-level of the user, the video camera being disposed in front and at the eye-level and being movable within the shielding element to be automatically directable towards a welding joint regardless of a direction of the head for recording the working process in the form of video signals transmitted, via an image processing unit, to a video display unit (7), which the user is able to view and which is placed in or on the inside of the shielding element (1) at the eye-level of the user, the image processing unit reading process data from the video signal and presenting a display of the same via the video display unit, the display showing a welding zone, the display changing a color of the welding zone depending upon a temperature at the welding zone.