Establish Of Constitutive Model And Research On Machinability Of4Cr13

4Cr13stainless steel is middle carbon martensite stainless steel, it has manyadvantages, such as corrosion resistance and high hardness, etc. Is widely used inmachinery, food, oil and gas and chemical sectors. However, it are commonlydifficult to machine materials for good toughness, low thermal conductivity, largeplastic deformation and high cutting temperature in cutting machine, and seriouscutting hardness result in difficult machining stainless steel.These restricted thedevelopment of stainless steel, in order to overcome these problems and improve thelevel of processing for difficult materials. In this paper, study on the mechanicalproperties and machinability of4Cr13stainless steel. Experiments required by theexperimental data on the dynamic mechanical properties of4Cr13stainless steel, andhigh speed milling cutting simulation are cutting forces, chip morphology and toolwear were studied. The main works of this study were as the follows:(1)The data of true stress-true strain were obtained by static tensile testsand dynamic separate tests under different strain rates and temperatures.4Cr1-3stainless steel is strain rate hardening and temperature softing materials was analyzed by these datas. The Johnson-Cook model of4Cr13stainless steelwas established, it is material plasticity model for the later chapter of finiteelement simulation.(2)Research on4Cr13stainless steel of the process of the formation mec-hanism of serrated chip and the variation cutting force with cutting speed byABAQUS finite element simulation.(3)The orthogonal cutting tests of4Cr13stainless steel were made on LB-R370CNC lathe. The law of cutting speed and feed rate on the influence ofcutting force and chip morphology. Meanwhile, The result of cutting force an-d chip morphology were obtained by test and simulation were compared. Theresult shown that the Johnson-Cook model and simulation of4Cr13stainless st-eel are reasonable.(4)Reasearch on machinability of4Cr13stainless steel by single and orth-ogonal milling test under high speed milling.The optimal cutting parameterswithin certain cutting parameters was obtained, the milling force model wasestablished, the law the influence of cutting parameters on cutting force andthe law of the impact of cutting parameters on the tool wear were analyzed.