Performance Profiling of Nanoparticulate Graphite Powder as Lubricant in the Machining of AISI 1040 Steel under Variable Machining Conditions

Abstract:

The generation of heat during machining at the cutting zone adversely affects the surface finish and tool life. The heat at the cutting zone, which plays a negative role due to poor thermal conductivity, resistance to wear, high strength at high temperatures and chemical degradation can be overcome by the use of proper lubrication. Advancements in the field of tribology have led to the use of solid lubricants replacing the conventional flood coolants. This work involves the use of nanoparticulate graphite powder as a lubricant in turning operations whose performance is judged in terms of cutting forces, tool temperature and surface finish of the work piece. The experimentation revealed the increase in cutting forces and the tool temperature when the solid lubricant used is decreased in particle size. The surface finish deteriorated with the decrease in particle size of the lubricant in the nanoregime. Keywords-Turning, Solid lubricant, Graphite, Minimum Quantity Lubrication, nano–particles, Weight percentage , Friction coefficient.

• Periodical: Advanced Materials Research (Volumes 984-985)
• Pages: 15-24
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.984-985.15
• Online since: July 2014
• Authors: S. Srikiran*, K. Ramji, B. Satyanarayana
• Keywords: Friction Coefficient (FC), Graphite, Minimum Quantity Lubrication, Nanoparticle, Solid Lubricant, Turning, Weight Percentage

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