Laser Power Modulation Technique
The deliberate adjustment of laser power based on the workpiece geometry to reduce heat accumulation at contours and overhangs.
Physikalisch-chemischer Wirkmechanismus
Laser power modulation changes the laser's energy input during the welding process. This allows the beam power to be increased or reduced in specific areas to minimize thermal overload while ensuring uniform deformation of the material.
Metallurgical Relevance & Welding Risks
With improper laser power, thermal cracking or excessive stress can occur, altering the microstructure and reducing strength. Modulation reduces this risk by controlling the heat better.
Werkstattpraxis & Handlungsanweisungen
To implement laser power modulation, set the welding parameters like beam voltage and frequency precisely. The laser operator must adjust the modulation to the specific requirements of the workpiece, using software-controlled systems or manual adjustments.