What are the common sources of cutting oil contamination and how can they be prevented?

Metal Particles: Generated during machining.
Tramp Oils: Leaked lubricants from machine components.
Microbial Growth: Bacteria and fungi introduced through water or air.
Dirt and Debris: External contaminants entering the system.
Water Hardness Minerals: Minerals from the water supply affecting water-based fluids.
Prevention:

Effective Filtration: Regularly filter the cutting oil to remove particulates.
Tramp Oil Skimming: Use skimmers to remove floating oils.
System Sealing: Ensure equipment is well-maintained to prevent leaks.
Water Treatment: Use deionized or softened water for dilutions.
Microbial Control: Implement biocides and maintain appropriate pH levels.
Good Housekeeping: Keep the work area clean and covered when not in use.
Implementing these measures maintains fluid integrity and prolongs its effective use.