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

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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.