| 摘要 |
<p>An arc welding gun with an electric contact, a nozzle (I), and a welding wire advancing axially through the contact and (I), and a handle (II) has gases and fumes extracted by an aspiration chamber surrounding (I) and with an annular opening concentric with (I). An ambient air inlet tube (III) is fixed to (II) and an extraction tube is connected to (I) and arranged axially inside (III). An adapter connection is fixed to (III) at the end remote from (I) and communicates with the interior of (III). An aspiration circuit is connected to the adapter, for the removal of gases and fumes.</p> |
