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Siyu Liang,Guangjun Liu,Gaoyang Wu,Tao Chen 대한기계학회 2022 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.36 No.2
In the process of Al-added pearlitic gray cast iron material cutting, the tool surface will form an adhesive layer due to extrusion and friction, which will have a complex impact on the machining quality and tool life. Therefore, it is necessary to study its formation process and tool wear mechanism in detail. This paper investigates the evolution laws of tool wear and workpiece surface roughness in different cutting parameters, which is based on orthogonal tests. Using the data of the orthogonal tests, an optimization model is carried out to find optimum cutting parameters which can keep a good balance among cutting efficiency, machined surface roughness and tool life. Then, the SEM and energy spectrometer are used to analyze the formation of adhesive layers and the distribution of elements. Compared with the comprehensive test, the orthogonal test can reduce the number of experiments and improve the efficiency on the premise of ensuring accuracy and can be easily applied to practical production. And the results of SEM micrograph and elements distribution map show that the stability of the mass ratio of aluminium to titanium on the tool surface can directly reflect the stability of the adhesive layer, thus affecting the tool life and the machined surface quality.