Cooling Systems Based on Cold Compressed Air: A Review of the Applications in Machining Processes

The present work collects a review and analysis of the cooling systems based on cold compressed air along with the main works about the application of such type of systems in machining processes. From the analysis of such works, it is possible to conclude that the cold compressed air system is a real environmentally friendly alternative to the traditional lubrication/cooling systems since it can: reduce the friction and the temperature in the cutting zone, improve the surface finish of the pieces, reduce the cutting forces, increase the tool life, facilitate the chip breaking and its evacuation, and reduce production costs. Among cold compressed air systems, it is possible to remark those that use a vortex tube due to its numerous advantages and good results.