Plasma, laser and oxy-fuel cutting all create fine metal fume and particulate. Without good extraction, fume spreads through the workshop, settles on equipment and exposes operators to harmful particles.
Capture at the table
Most cutting tables are extracted from below, through zoned plenums that open only where the torch or laser head is working. Zoning concentrates the airflow where it is needed and keeps the fan size and running cost down.
Get the airflow right
Too little airflow lets fume escape above the table. Too much airflow wastes energy and can draw in sparks and hot debris. The right figure depends on the table size, the cutting process, the material and its thickness.
Manage sparks and fire risk
Hot particles travelling into the ductwork are a real fire risk. Spark arrestors, drop-out boxes and correct duct velocities reduce the chance of embers reaching the filters. Fire-retardant filter media adds another layer of protection.
Choose suitable filters
Thermal cutting fume is very fine. Cartridge filters with surface-loading media capture it efficiently and release it well during pulse cleaning, helping to keep pressure drop stable.
Plan maintenance from the start
- Easy access to filters and hoppers
- Regular emptying of slag and dust from the table
- Monitoring of pressure drop
- Routine checks of spark arrest equipment
SP&DE designs and installs extraction for cutting tables and fabrication shops across South Africa. Contact us to discuss your process.
