RATEC laser fume filters with precoating tanks are designed for challenging cases: fine laser dust, metallic aerosols, and adhesive or oil-laden particles that quickly clog normal filter media. A precoating system applies a protective layer to the filter cartridges, preventing them from clogging and significantly extending their service life. We custom-design each unit for your laser system and requirements; housings and units are manufactured in our own plant in St. Veit an der Glan, depending on the project.
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Why Laser Fume is a Special Challenge
Laser cutting and laser processing generate very fine particles. Depending on the material, coating, or oil film on the sheet metal, these particles can be sticky or oil-laden. Such particles penetrate the filter medium and are difficult to remove by cleaning. The filter clogs, extraction performance drops, and cartridges need to be replaced prematurely.
How Precoating Works
- Dosing: A precisely measured precoating agent is introduced from the precoating tank into the raw gas stream.
- Protecting: The agent deposits on the filter medium, forming a uniform protective layer.
- Filtering: Particles are trapped in this layer instead of the filter medium. Separation efficiency remains consistently high, without clogging.
In practice, fine mineral powders, such as limestone flour, are usually used as precoating agents. They absorb sticky and oily components and can be cleaned off the filter along with the dust.
Your benefits
- Prevents clogging: even with adhesive and oil-laden particles.
- Significantly longer service life: fewer filter changes, lower operating costs.
- Consistently high separation efficiency: uniform extraction throughout the entire service life.
- Low maintenance: compact and fully enclosed in a housing.
- Tested filter cartridges: we exclusively use tested cartridges from specialized manufacturers.
Technical specifications
| Feature | Laser Fume Filter with Precoating Tank |
|---|---|
| Application | fine laser dust, metallic aerosols, critical particle mixtures |
| Construction | Cartridge filter and precoating system in a closed housing |
| Connection | flexible to laser systems or extraction systems |
| Filter media | depending on application and dust class |
| Airflow, dimensions, connections | designed individually to your requirements |
Laser Fume Filter or Cartridge Filter?
For dry dust and welding fume, a cartridge filter without precoating is usually sufficient. However, as soon as fine, adhesive, or oil-laden particles are involved, typical in laser cutting, the laser fume filter with precoating tank is the better choice. We will determine the best solution for your process together during the design phase.
What matters for the design
- Laser process: materials, coatings, oil film, cutting power, and operating hours.
- Air volume: extraction points on the laser system and required suction power.
- Precoating: dosing and precoating agent suitable for the dust.
- Safety: occupational safety, fire and explosion protection, recirculation or discharge of clean air.
Complete solution from a single source
RATEC supplies the laser fume filter individually or as part of a complete extraction system, from consultation and planning to technical design, manufacturing, assembly, and commissioning. We manufacture in our own plant in Carinthia, certified according to ISO 9001, EN 1090-1, and ISO 3834-2.
Do you want to reliably filter your laser fume?
Tell us about your laser system, materials, and operating hours. We will get back to you with a concrete proposal.