| 摘要 |
<p>Laser welding apparatus includes a laser beam 16 impinged upon a component 28 to be welded at a laser beam impingement point 18, wherein plasma suppression means 30 is arranged to impinge a jet of gas 38 on the component at an angle to its surface, flowing towards the laser beam impingement point. The angle at which the jet of gas 38 impinges on the component 28 is between about 30 and 60 degrees (preferably between 38 and 52 degrees), and is at a distance at least 1mm from the laser beam axis 16. Gas extraction means 40 opposite the plasma suppression means 30 may also be provided.</p> |
