Foul odor in metalworking fluids typically arises from fluid degradation, bacterial and fungal growth, and loss of chemical balance. This problem is more common in water-based cutting fluids when proper maintenance is not performed.
1. Bacterial and Microorganism Growth
The most common cause of foul odor.
- Water-based fluids create a suitable environment for microorganisms
- Bacteria break down oils and additives, producing odor
- "Sulfur"-like rotten egg smell can occur
Inadequate maintenance accelerates this process
2. End of Fluid Life
Over time, cutting fluid loses its chemical structure.
- Emulsion structure degrades
- Oil and water phases separate
- Protective additives lose their effectiveness
Old fluid = foul odor + low performance
3. Insufficient Filtration and Cleaning
- Chips and metal particles accumulate in the system
- Dirty environment becomes a food source for bacteria
- Sludge forms at the bottom of tanks
4. Incorrect Concentration
- Too low concentration increases bacterial growth
- Too high concentration can also lead to imbalance
Correct ratio is critically important
5. Water Quality Problems
- Use of hard water or contaminated water
- High mineral and organic content
- pH imbalance
6. Low Circulation
- Oxygen balance is disturbed in stagnant fluid
- Microorganisms multiply faster
- Anaerobic environment forms in the tank
7. Contamination (Oil and Dirt Entry)
- Hydraulic oil leaks
- Machine greases
- External contaminants
These contaminants become food for bacteria
8. Prevention Methods
- Regular maintenance and filtration
- Correct concentration control
- Tank cleaning
- Biocide usage
- Ensuring good circulation
You can contact us for technical support regarding solutions suitable for your business.
