Experimental Study On High Speed Cutting Of Nickel-based Superalloy Inconel718

As the main cutting style in today's cutting metal processing,high speed cutting technology get more and more attention from all walks of the society,and the states regard the high speed machining technology as a key priority.As one of the efficient processing technology,the high cutting speed technology solve the problem of new materials cutting difficult,which will have more long-term development.The tool and material properties in high speed cutting process are different with the common process,The different physical phenomena in the process have been studied,which can help us to understand the cutting process deeply,With the finite element software,the metal cutting process becomes visible.The superalloy Inconel718 mentioned in this paper is the typical nickel based high temperature alloy,which is widely used in the field of aerospace,marine and petroleum exploration technology,,the Nickel based superalloy Inconel718 is the emblematical material to machining difficult,high speed cutting technology has changed the status completely?In this paper,based on the orthogonal test of Nickel base superalloy Inconel718,some physical phenomena in the cutting process are studied to better understand the cutting process:(1)the background and significance of the research are described,and the key technologies of high speed cutting and the development of the research on cutting physical phenomena are introduced in detail.(2)The single factor and orthogonal experiments were designed for high speed cutting of Nickel base superalloy Inconel718.Through the single factor experiment to determine the ceramic cutting tools for the ideal,With the design of orthogonal test and range analysis of orthogonal experiment,the influences of cutting speed,cutting depth and feed per tooth on the cutting force are analysed to determine the optimal parameter combination when get the minimum cutting force.With the help of MATLAB simulation software,the empirical formula of cutting force is calculated,and through error analysis,the empirical formula is proved to have great prediction ability.(3)The deformation zones of the cutting heat are described,and the distribution of cutting heat in the chip,cutting tool and workpiece is analyzed theoretically.The cutting simulation test shows that the position of the highest temperature is on the friction surface between the rake face and chip,and with the increase of cutting speed and feed per tooth,the amount of heat removed from the clip increases,the increase on tool and material is not obvious.(4)The surface roughness is measured toward the 16 groups of material surface after orthogonal test,the influences of the change of cutting speed,cutting depth and feed per tooth on the material surface roughness are analysed deeply,and the experience model of the surface roughness are established.With the help of MATLAB software,the empirical formula of surface roughness are calculated,based on the error analysis of the empirical formula,some error value exceeds the allowable error range(10%),so the empirical formula of surface roughness has low accuracy.