Metalworking fluids, whether they are water-dilutable or straight oils, contain several additives. These additives are added to help increase lubricity, prevent corrosion, inhibit bacteria growth, reduce foam and other specific functions. Here are some of the most common additives and what you should know about them:
- Lubricity – These are typically chlorine, sulfur, phosphorous, calcium and esters. Chlorine can be an environmental issue or affect metal integrity and some sulfurs can stain yellow metals. Certain esters are unstable when used in metalworking machines and can cause gummy residues.
- Corrosion – Borates are common corrosion preventatives, but they are suspected of having environmental and health concerns.
- Bacteria Control -The additives to restrict bacteria growing in a coolant are inherently dangerous and the formaldehyde release versions are under scrutiny for health reasons.
- Foam Inhibitors – These often contain silicone and these can cause problems with downstream operations.
Knowing what’s in your fluid is critical not only for performance, but also for workplace safety. If you want to know more about your metalworking fluid, send us a message or call us at 562-595-8491 and ask to speak to an Account Manager.