What are the possible technologies for the extraction of welding fumes? As we have already discussed in the past, there are solutions for the extraction of fumes deriving from different types of work. In this article we will deal with those considered to be the most suitable for welding fumes, therefore the most performing, safe and valid under certain conditions.

Let's start by saying that each situation should be assessed by professionals who, based on the type of work, the pollutants present, their volume and the daily work cycle, could suggest the most suitable type of system.

But let us now come to the solutions useful for the extraction of welding fumes.

Cartridge filters: the best systems for the extraction of welding fumes

Cartridge filters have an operating mechanism very similar to that of bag filters. The only difference is that the dust is blocked by a pleated filter inside which it is trapped, releasing clean air in return.

Although the operation is similar to that of bag filters, they are very efficient in the presence of welding fumes, and offer much better performance. The cartridges are periodically cleaned by a self-cleaning mechanism.

The air flow is able to retain fine and light dust, a jet of compressed air cyclically comes into action causing a countercurrent shaking of the cartridges of a certain intensity, which leads to the detachment of the particles present.

How to design cartridge filters for the welding fumes extraction?

This is the aspect that can make the difference between one system and another. In fact, proposals can include systems for four different situations:

- Single work station: where the best solution may be a wheeled single cartridge filter with suction arm.

- Multiple welding workstations: in this condition a centralized cartridge filter with several fixed suction points is ideal.

- Welding workshop: where extraction within the small building can be done through suction towers with push and pull system.

- Large cabins/welding facilities: that require more complex and performing systems given the volume of fumes produced, so the best way is the push and pull system with two centralized cartridge systems, where one extracts the polluted air and the other pushes the clean air inside the room.

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