Research On Finite Element Simulation Of High Chromium Cast Iron Cutting Process

As an excellent wear resistant material,high chromium cast iron has been being utilizedto manufacture wear parts increasingly. High chromium cast iron is not only wear resistant,butalso of high impact toughness, and it is all determined by its unique metallographicstructure.However, the very metallographic structure results in a series of problems in highchromium cast iron cutting process, such as cutter wear,low machining efficiency and so on.Ifthe cutting problems of high chromium cast iron is not well solved, it certainly will restrict therange of application.This research applies FEM to solving the cutting problem of high chromium cast iron.This research will proceed form the following aspects:(1) Modeling Johnson-Cook constructive model describing the constructive relation ofhigh chromium cast iron;(2) Demonstrating the key techniques of simulation of cutting process;(3) Modeling cutting process of high chromium cast iron by FEM software ABAQUS,and checking whether hourglass phenomenon emerges;(4) Under the premise that the hourglass phenomenon doesn't emerge, according to theresults of simulation, analyzing the variation of cutting force and cutting heat, whichhave something to do with cutter wear, under different rake angles and cuttingspecifications;(5) In order to extend service life of cutter when high chromium cast iron iscutting,optimizing rake angles and cutting specification.This research achievement improve the capacity of high chromium cast iron to someextent,and provide the guidance of optimizing rake angles and cutting specification to highchromium cast iron machining in theory.