How Welding Process And Fume Generation Influence Filter Selection?

Welding filters are used in welding fume extractors to remove harmful fumes created during the process from the air. This is key to protecting the workers within a facility as well as the materials. However, choosing a welding filter is a nuanced concept and requires more information than just filtration efficiency and filter elements. In this context, here’s a look at how the welding process and types of fumes determine the selection of an optimal welding filter.

 

5 Factors To Consider When Selecting Welding Filters

 

Type Of Welding

 

The three most common types of welding processes are Gas Metal Arc Welding  (GMAW), Flux-Cored Arc Welding (FCAW), and Shielded Metal Arc Welding (SMAW). The process will determine the specification of the welding filter as the rate of fume generation varies widely. For instance, FCAW and SMAW will produce more fumes than GMAW, and filters must be selected accordingly.

 

Type Of Shielding Gas

 

Another key aspect that determines fume generation is the shielding gas. Some welding processes don’t use any, whereas others use different types. Depending on the type of gas, the amount of fumes produced can vary.

 

Type Of Electrode

 

Fumes are also dependent on the type of electrode used in a particular welding process. Typically, most electrode manufacturers will specify the rate of fume generation so that the respective welding filter can be selected for optimal performance.

 

Type Of Material

 

The next obvious consideration is the type of metal or alloy being welded. This, too, will determine the amount of fumes as well as their levels of toxicity. For example, welding aluminum is a lot more challenging than welding steel as it produces more harmful gases.

 

Type Of Flux

 

In SMAW and FCAW, the molten material is protected from atmospheric contamination by a material known as flux. Instead of the molten material, this flux material is heated into fumes during the welding processes, leading to flux emissions. Therefore, the rate of these emissions also needs to be considered while selecting the proper welding filter element.

 

For welding filters or other types of custom filters, look no further than Dynamic Filtration Ltd., home to different types of industrial filters such as moulded-end filters, sewn-end filters, pleated air filters, panel filters, inlet-type filters, and more. We stand behind the quality of our products with our expert customer service. For more information, contact us at 519-886-0749 today.