Method, device and system for determining welding speed for a manual arc welding process

摘要

The method for determining a welding speed (v s) during arc-welding process (50), comprises detecting the arc-welding process by a detection device (48) fixed at a protective welding helmet (36), and determining the welding speed from the detected arc-welding process. The detection device having an optical recording unit is connectable over a driving unit (42) with a welding energy source (4) for unidirectional- or bi-directional data exchange. A position verification of the detection device is carried out to the workpiece to be connected. The method for determining a welding speed (v s) during arc-welding process (50), comprises detecting the arc-welding process by a detection device (48) fixed at a protective welding helmet (36), and determining the welding speed from the detected arc-welding process. The detection device having an optical recording unit is connectable over a driving unit (42) with a welding energy source (4) for unidirectional- or bi-directional data exchange. A position verification of the detection device is carried out to the workpiece to be connected, and the welding energy source is displaced to the workpiece in a weldable condition only during the suitable positioning of the detection device. One of the welding parameters of welding current (I s), welding voltage (U s) and wire conveying speed (v d) is changed for the optimization of the arc-welding process in dependence of the determined welding speed. One of the welding parameters is changed for the observance of a given energy per section and/or for the observance of a given a-measures. The welding energy source is controlled by one of the changed welding parameters. A workpiece temperature is determined from the detected arc-welding process. The protective welding helmet has an indicator, on which instantaneous values of the arc-welding process of welding speed, welding current, welding voltage, workpiece temperature and wire conveying speed are indicated. The exceed of the welding speed and the workpiece temperature over a first limit value and/or a fall of the welding speed and the workpiece temperature under a second limit value release an acoustic signal and are graphically represented in the indicator. The welding helmet has a visor, which is provided with the indicator. One of the instantaneous values of welding speed, welding current, welding voltage, workpiece temperature and wire conveying speed of the arc-welding process is stored in a data memory. Independent claims are included for: (1) a device for determining a welding speed (v s) during arc-welding process; and (2) a system for arc-welding process.