1. A device for simulating a welding process by a user, comprising a computer having an input device and an output device, a welding torch, a magnetic position monitoring device having at least one transmitter and a plurality of sensors, a retaining device for a workpiece used for the simulation and a visualization device for generating a two- or three-dimensional image on the output device, wherein the retaining device is designed in the form of a small, portable box to be placed on a table and has a recess into which various workpieces can be inserted, the at least one transmitter of the position monitoring device being arranged below the recess at as small a distance from the workpiece as possible, wherein at least one sensor of the plurality of sensors of the position monitoring device is arranged on a welding shield or a cap for the user as the visualization device, so that depending on the user's position in relation to the workpiece and an angle to the workpiece determined from that and the welding torch the viewing angle of image on the display device can be changed dynamically, and wherein the welding torch comprises a torch handle and a pipe bend and has a line connection to the computer.