Increase productivity of hard-to-machine materials by preventive heating of the workpiece

Abstract

The possibility of increasing productivity by increasing the cutting parameters of difficult-to-machine materials, using expensive tool materials, etc. is an extensive trend of innovative improvement and is accompanied by high costs of operations and the need to provide expensive equipment. The article argues that a more effective method of improving machining operations is the use of the workpiece Turning with Preventive Heating (TPH) method. An analysis of existing methods, advantages and disadvantages of heating the cutting zone of the workpiece for machining certain difficult-to-machine materials is presented. The stages of studying the power, thermodynamic, and stress-strain state of the workpiece resulting from the complex action of mechanical loads associated with shearing of the processed material during cutting and thermal loads created by TPH technology are recommended. Modern programs for simulation analysis of innovative cutting processes are analyzed. Arguments for the effective use of AdvantEdge software in comparison with similar alternative programs for simulating the processes of machining difficult-to-machine materials are presented. The results of studies of changes in cutting forces for different cases of preventive heating of the cutting zone of parts made of the chromium-nickel alloy Inconel 718 are presented.