Abstract
Modern mechanical engineering is characterized by high energy consumption, which specific share of cost can reach from 15 to 25%. The task is to research energy-efficient technological methods of mechanical processing, which will reduce the cost and duration of the production cycle.As a criterion for optimizing the machining process, it is proposed to use quantitative indicators of the specific energy intensity of cutting. The feasibility of using energy-efficient strengthening methods in the technological process of manufacturing parts in heavy engineering needs to be studied.The purpose of the work is to study the use of energy-saving technologies in the manufacture of machine parts in heavy engineering.It is proposed to use a mathematical model to determine the optimal technological parameters of energy-efficient processes of mechanical processing of heavy engineering parts. The level of energy consumption in the cutting zone, which is spent on removing a given volume of material from the layer of the workpiece being cut, is best reflected by the specific energy intensity of cutting.To ensure the operational properties of machine parts, it is proposed to use methods of surface strengthening with the use of electric current.The use of finishing turning with electric pulse heating in the manufacturing process of the shaft allows to replace four operations -turning, heat treatment, two circular grinding operations -with one operation.Clean turning with electric pulse heating has such advantages as: the possibility of strengthening the surface layer of the part by differentially wearing it (for parts that wear unevenly); processing on one technological equipment; reducing the number of technological operations; low equipment costs.It was determined that the introduction of processing methods using electric current, in particular, turning with electric pulse heating, allows to significantly reduce the duration of the production cycle of manufacturing parts of heavy engineering. The amount of energy consumed can be reduced by 80%
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