| 摘要 |
<p>The method for laser welding of workpiece, comprises guiding a laser radiation and a process gas on the processing place. The volume flow and/or the composition of the process gas is changed by a magnetic or a piezoelectric valve during the welding process. The process gas containing two components is guided against the workpiece surface. The change of the composition of the process gas is produced through repeatedly switching on and switching off the component for the process gas component. The frequency for the periodic repetition is 3-30 Hz or 1000-3000 Hz. The method for laser welding of workpiece, comprises guiding a laser radiation and a process gas on the processing place. The volume flow and/or the composition of the process gas is changed by a magnetic or a piezoelectric valve during the welding process. The process gas containing two components is guided against the workpiece surface. The change of the composition of the process gas is produced through repeatedly switching on and switching off the component for the process gas component. The frequency for the periodic repetition is 3-30 Hz or 1000-3000 Hz. The change of the gas volume flow is carried out so that a gas radiation is formed in the form of constant wave that is used as process gas.</p> |
