What is the reason for the deterioration and smell of metal cutting fluid?
The main reasons for the deterioration and odor of metal cutting fluids come from anaerobic bacteria and aerobic bacteria. Aerobic bacteria have a characteristic. In the process of survival and reproduction, they must have sufficient oxygen. In the absence of oxygen, they will automatically disappear or cannot reproduce;The silicone defoamer added to the metal cutting fluid is insoluble in water in nature, it just floats on the top of the liquid, it has a certain barrier to the entry of oxygen, and the defoamer has a certain bactericidal effect by using this feature.
Anaerobic bacteria, on the other hand, like to survive and reproduce in a space without oxygen. When the oxygen reaches a certain amount, it will be automatically extinguished by oxygen. The metal cutting fluid will emit an odor after a few days of stopping circulation, which is the result of the rapid reproduction of anaerobic bacteria in an oxygen-free environment at high temperature. Circulating the metal cutting fluid to properly mix oxygen can destroy this living space, and the anaerobic bacteria in the metal cutting fluid will not reach the limit of deterioration and odor.
