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Method for process stabilization during laser and laser-metal-shielding gas-hybrid welding of metallic workpieces such as pipes, comprises controlling the energy input in welding pool by means of laser power modulation
Method for process stabilization during laser and laser-metal-shielding gas-hybrid welding of metallic workpieces such as pipes, comprises controlling the energy input in welding pool by means of laser power modulation
The method for process stabilization during laser and laser-metal-shielding gas-hybrid welding of metallic workpieces such as pipes, comprises controlling the energy input in welding pool by means of laser power modulation. A laser power base level (P u) is superimposed according to a pulse time repeated to a higher laser power (P o). The pulse duration of the pulses (P o) is 1/2-1/20 of the time. The laser power (P o) is increased by a factor of 1.05-1.3 of the laser power base level (P u). The pulse frequency is 70-200 Hz. The method for process stabilization during laser and laser-metal-shielding gas-hybrid welding of metallic workpieces such as pipes, comprises controlling the energy input in welding pool by means of laser power modulation. A laser power base level (P u) is superimposed according to a pulse time repeated to a higher laser power (P o). The pulse duration of the pulses (P o) is 1/2-1/20 of the time. The laser power (P o) is increased by a factor of 1.05-1.3 of the laser power base level (P u). The pulse frequency is 70-200 Hz. The laser power modulation is carried out during orbital welding of pipes or welding in forced position. The forced position is the overhead position.
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