Metal cutting is a process with exceeding non-linear and heat-stress coupled. The heat is mostly from the distortion of chip (shear plane heat source) and the friction at the tool-chip and tool-work interface (frictional heat source). The both heat source area are not big, but the temperature in this area is very high, once some scholars
point out that the high temperature can reach 1000 ℃. The high cutting temperature is the main reason of the tool's abrasion and it also can debase the precision ...