| 摘要 |
<p>This invention relates to a beam machining, such as laser welding, apparatus having a machining chamber (108), and means (204) for directing a machining beam onto a work piece within the chamber, the latter being supplied with an inert gas throughout each machining operation. …<??>The machining chamber (108) has associated therewith particle collecting and removal means (236, 256) including a gas collecting manifold (240), and has further associated therewith sealing means (156, 244) operable in two states, one for allowing gas exiting the chamber to freely escape, as when the chamber is being purged of air and moisture, and the other for constraining all gas and particulate matter from the chamber to flow into the manifold, while beam machining is in progress.</p> |
