| 摘要 |
<p>It is not possible to convert a welding gun without a fume extractor to a welding gun with a fume extractor because prior art welding guns have integral fume extractors. The disclosed fume extractor has attachments to convert a non-fume extracting welding gun to a fume extracting welding gun. The fume extracting device (10) includes first and second body portions (30) individually having an internal fume collecting chamber (50), a plurality of fume inlet passages (54), and a fume exhaust passage (48) and is so constructed that the body portions (30) are maintained in a preselected spaced apart relationship to each other and to the central axis (14) of the welding apparatus (12). First and second gas shielding devices (64) can be individually connected to the one of the body portions (30).</p> |
