Development and evaluation of hybrid cryogenic and minimum quantity lubrication for grinding processes

The research work was undertaken to examine the influence of combination of minimum quantity lubrication and liquid nitrogen (MQL+LN2) on the grinding behavior in different grinding processes. The concept of this cooling system is based on freezing oil-droplets on the grinding wheel circumference using liquid nitrogen. The temperature development in the contact was evaluated using a new analysis concept. The supplying parameters of the proposed cooling system were studied and optimized in surface, circular and non-circular grinding processes. The proposed cooling system was compared to different cooling systems.