Self-lubrication of sintered ceramic tools with CaF2 additions in dry cutting

State of art of cooling method for dry machining

“…Solid lubricants at the rake face results in a lower flank wear than solid lubricant at flank face [15]. Studies show that solid lubricant placed at the rake face records the lowest friction coefficient and least tool wear value [10,15]. Figure 6 shows the self-lubricated tool system in the dry machining.…”

“…Location of micro hole in self-lubricated tool system [15]. Solid lubricant, Calcium Difluoride (CaF 2 ) will be included in fabricating the ceramic cutting tool by hot pressing process [10]. About 10% of solid lubricant is included into the ceramic matrix [10].…”

“…Solid lubricant, Calcium Difluoride (CaF 2 ) will be included in fabricating the ceramic cutting tool by hot pressing process [10]. About 10% of solid lubricant is included into the ceramic matrix [10]. Friction coefficient at tool-chip interface can be reduced as the solid lubricant produces self-lubricating film on it [10].…”

“…In the second method, cutting fluid is used to reduce the cutting zone temperature. Meanwhile, friction coefficient in dry machining can be reduced by two methods; coating layer at cutting tool and material selection of cutting tool [10]. By reducing temperature at cutting tool during dry machining operating, performance of the machining can be increased.…”

“…Some of the cooling method for dry machining are internally cooled, indirect cooling, solid lubricant and heat pipe technology [2,4,6,[10][11][12]. For time being, internal cooling system is the most promising cooling system to improve dry machining's performance [1,13].…”