Reference | Scania

Case description Download PDF
Country Sweden

The challenge

Ferruform AB (situated in Luleå) is one of Scania’s production units, based in Sweden. Scania is well-known for its (mining) trucks, buses and coaches. Besides, Scania produces engines for industrial and marine applications and power generation. In Luleå they make, among others, the metal bodies for the trucks. The steel frames are mainly produced by robotic welding machines. Occasionally manual welding takes place.

The welding activities at Scania generate a lot of welding fumes and dust. This pollution needed to be extracted effectively to be code compliant and to offer the employees of Scania a safe and healthy working environment.

Therefore, Plymovent created an engineered solution for the production unit in Luleå, Sweden.


The Solution

Various welding processes are taking place in this production unit of Scania, all at fixed workplaces. Plymovent developed an engineered solution and installed the following products:

  • Various extraction hoods to cover robotic installations.
  • Multiple arm systems with various extraction arms to remove welding fumes directly at the source.
  • OilShield units to prevent the filter cartridges of the central filter unit from clogging.

The extraction hoods, arms and limestone feeders are connected to ductwork. The ductwork is connected to a central filter system, the MultiDust® Bank (MDB). Plymovent opted for two MDB-40 units, meeting the required capacity.

In the automotive industry many welding applications involve oil e.g. to lubricate workpieces or machine tools. Oil is often the main reason that filter cartridges get clogged. To prevent filter cartridges from clogging by oil, Plymovent developed the OilShield. The OilShield feeds limestone into the ductwork, where it mixes with oils/oily fumes. The mixed limestone and oil become a dry matter, where as it reaches the filter, falls down in the dustbin. Without the OilShield the filter cartridges were clogged constantly, which led to high maintenance and filter replacements costs.


Main benefits

  • Effective removal of welding fumes and dust
  • Safer and healthier working environment, clean air at work
  • Code compliant
  • Less ventilation and heat costs, thanks to heat exchangers
  • Less filter cartridge replacement costs. Thanks to the effective limestone feeder, the filter’s lifespan is longer
  • Expansion of the existing welding fume extraction system is easy, prepared for future growth


Effective removal of welding fumes and dust

Please download the PDF (on the left) to read the complete solution offered and installed at Scania by Plymovent.