Choosing the Right Filter Media for Welding Fume Extraction
Intro
In metalworking environments, effective welding fume extraction is critical for both employee health and operational reliability. Many extraction systems traditionally rely on paper-based filter cartridges with nanocoating. While these solutions can meet fine filtration requirements, they often struggle with limited service life, reduced cleanability, and increasing pressure drop over time.
To address these challenges, the customer replaced their existing paper-based cartridges with a newly developed filter medium based on thin 100% bico polyester with nanocoating. This material is specifically engineered for fume filtration rather than dust filtration, delivering stable and efficient performance throughout the filter’s lifetime.
The Challenge
The customer experienced several recurring issues with their previous paper-based filter cartridges:
These factors resulted in higher maintenance costs, increased energy consumption, and operational inefficiencies.
Rapid clogging under continuous welding fume exposure
High and quickly increasing pressure drop
Short service intervals and frequent cartridge replacement
Reduced mechanical durability in environments with vibration and fluctuating humidity
The Solution
A 1:1 replacement was carried out, substituting the existing paper cartridges with filter cartridges made from thin 100% bico polyester filter media with nanocoating.
The new filter medium combines a robust polyester fibre structure with a fine-pored nanocoating, providing:
Improved resistance to mechanical stress
Highly efficient surface filtration, preventing deep penetration of welding fume particles
Easier pulse cleaning and reduced dust accumulation
Lower initial pressure drop
This combination ensures consistent filtration performance over a significantly longer operational lifetime.
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