Extraction at source is the most efficient capturing solution for welding fumes
Recent advances in welding torch technology mean that harmful weld fumes can now be captured using a welding torch with built in nozzles for fume extraction connected to a high vacuum extraction unit.
Stand-alone weld fume extractors can be used or, for larger workshops ducted extraction systems can be installed. On-torch extraction has the advantage over traditional systems as the extraction is always on when welding and the operator does not need to continually reposition the extraction hood.
It has been proven that extraction at source is the most effective and efficient method of capturing and removing welding and similar fumes.
Using this method, the risk of the welder or operator being subject to hazardous fumes is minimised and allows the welder to work over larger areas as well as inside constructions.
Extraction efficiency ranges from 70-98% depending on the welding method, type of shielding gas, the material and the skills of the welder.
On-torch needs ‘high vacuum’
On-torch extraction uses high vacuum technology, i.e. high speed extraction and low air volumes to extract the fumes. The extent of disturbance created in the shielding gas depends on the type of gas used.
MIG fume-torches, such as the SifGun Fume Extractor are now available - in air- and water-cooled models - with advanced design features that enable 98% fume-removal at-source, without the need to adjust the flow–rate of shielding gases and with the weight and manoeuvrability of a regular MIG torch.
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