{"id":26745,"date":"2020-02-26T18:10:15","date_gmt":"2020-02-26T17:10:15","guid":{"rendered":"https:\/\/www.secureair.it\/aspiratore-fumi-di-saldatura-con-filtri-integrati-come-funziona-e-perche-dobbiamo-fidarci\/"},"modified":"2023-06-16T09:02:49","modified_gmt":"2023-06-16T07:02:49","slug":"welding-fumes-extractors-with-integrated-filters-how-it-works-and-why-we-must-trust-them","status":"publish","type":"post","link":"https:\/\/www.secureair.it\/en\/welding-fumes-extractors-with-integrated-filters-how-it-works-and-why-we-must-trust-them\/","title":{"rendered":"Welding fumes extractors with integrated filters, how it works and why we must trust them"},"content":{"rendered":"

In our blog we have already written several articles about the welding fume extractor in a portable version with integrated filtration, also known as mobile purifier<\/a> or wheeled purifier.
\nMany customers before buying it have written asking us to explain in detail why they should trust an equipment that sucks the fumes and then re-imports the clean air inside with filtration declared 99,95% and to know which filters are used inside, to better understand how the welding fume extractor can effectively filter and break down fumes and micro dusts dangerous for the welder.<\/p>\n

Remember: essential filter teamwork that must be in sequence<\/h2>\n\n\n\n
The first fundamental concept, is that no mechanical filter alone is able to directly purify 99.9% of the welding fumes, in fact the professional mechanical air filtration is always composed of a series of filters one after the other, in order to create a “sequence”.<\/p>\n

Otherwise in the finer filter it would clog very quickly without the “protection” of the previous ones. You can see well in the photo on the right as from top to bottom there are three filtering stages with last in the bottom the largest and most important.<\/td>\n

\"filtri<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

But let\u2019s go back to the main topic of this article and let\u2019s see in detail the path that make fumes and dust after they have been sucked by the hood\/ suction arm:<\/p>\n

Stage 1: The first impact with welding fumes and dust and often sparks also arrive<\/h3>\n\n\n\n
Efficiency grade EN ISO 16890: Coarse<\/p>\n

Composed of a metal filter with frame and internal nets in galvanized steel, it forms a real mesh\/ sieve designed to stop the largest dust, the sparks and in general to protect the filters later stages that being finer would be immediately saturated by dust.<\/p>\n

Just because coarse and metallic can be cleaned several times by washing it but without exaggerating with aggressive detergents or high pressure washers otherwise the internal links can loosen losing the protective function.<\/td>\n

\"depuratore<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

The cost is usually low, but do not underestimate this filter because it is very important for teamwork in stopping welding fumes by protecting those after.<\/p>\n

Stage 2: Second filtration step, deals with the average dust that has survived stage 1<\/h3>\n\n\n\n
Efficiency degree EN ISO 16890: Coarse 45%
\nFiltration class EN779: G4
\nComposed of a filter with frame and metal mesh for containment of a septum in synthetic average, able to break down the average dust with a gravimetric efficiency of 90% which means filtering at least 90% of the powders with size 2 microns and obviously higher, a fair amount of work to protect the next final stage. Also this stage would be theoretically washable and blowable but we do not recommend it because often with welding fumes it becomes loaded with even oily residues as can be seen in the photo.<\/td>\n		\"depuratore<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

 <\/p>\n

Stage 3: the HEPA filter, dedicated to the micro-dust present in the residual welding fumes after the first two stages<\/h3>\n\n\n\n
This filter in technical jargon known as “absolute” does the real work that then protects our lungs from the smallest particles, namely harmful micro dust.<\/p>\n

Efficiency degree EN 1822: 99.95% MMPS or only 0.05% of the smallest particles<\/p>\n

The filter material of this precious filter is made of glass fiber, with thermoplastic wire separators.
\nThe self-draining frame in MOPLEN (PPE) allows a greater tensile strength, a lower density and a greater thermal resistance and abrasion compared to the polystyrene frames on the market.
\nComplete sealing system in rigid PU.<\/p>\n

The absolute filter cannot be cleaned and blown and ATTENTION its life depends on how good the user is at checking, cleaning and often replacing the first two filter stages.<\/td>\n

\"depuratore<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

End of teamwork: Operator health guaranteed W3<\/h3>\n

Thanks to this sequence of filters with final efficiency HEPA H13 99.95% the MFU series welding fume aspirator can be used for the separation of carcinogens, for example for welding stainless steel and for this reason is labeled W3 according to ISO 15012-1<\/a>.<\/p>\n\n\n\n
Seeing is believing<\/strong><\/p>\n

Here on the right you can see the color of the filters stage 2 and stage 3 described above, after just 18 hours of operation, here the link to the full article.<\/p>\n

And in the videos under the welding fumes extractor in action during electrode welding of large hydraulic fittings, one of the most “smoky” of all!<\/p>\n

Have a good job!<\/p>\n

 <\/td>\n

\"filtro \u00a0\u00a0\u00a0\u00a0\u00a0 \"filtro<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

In our blog we have already written several articles about the welding fume extractor in a portable version with integrated filtration, also known as mobile purifier or wheeled purifier. Many customers before buying it have written asking us to explain in detail why they should trust an equipment that sucks the fumes and then re-imports […]<\/p>\n","protected":false},"author":2,"featured_media":2746,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[18],"tags":[3321,818],"class_list":["post-26745","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news","tag-fume-extractor","tag-welding-fumes"],"acf":[],"yoast_head":"\nThree reasons to trust a welding fumes extractor - Secure Air<\/title>\n<meta name=\"description\" content=\"Trust a welding fume extractor that re-introduces clean air inside with 99.95% filtration declared? 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