چكيده به لاتين
The abrasive particle machining process is used as one of the modern machining processes for the final finishing of machined surfaces by conventional methods. In this thesis, the effect of extrusion pressure parameters and abrasive particle size on the number of machining cycles is investigated. First, abrasive particle-based processes are described, and then past studies in this field are introduced, then the experimental method, equipment, and materials used in this study are introduced. The results are analyzed, and finally, conclusions and suggestions are presented. Aluminum 7075 was considered for this study. In the experiments conducted using the experimental design using Design Expert software and two variable parameters of pressure and mesh size were determined at three levels, a fixed Ra criterion of 0.5 μm was considered for surface quality, and all samples were machined with the specified input parameters until the specified criterion was reached. SiC abrasive particle material was selected and grease was used as the base material of the abrasive paste. The number of cycles was considered as the output. The results obtained in this thesis show that both pressure and particle size parameters affect the number of machining cycles and the role of particle size effect is greater than pressure. In this research, considering the target surface quality, the optimal pressure and mesh values were obtained as 8 bar and 46, respectively, which achieved the target quality with the lowest number of cycles. The viscosity of the abrasive paste prepared by the rheometric test was obtained as 1660 Pa.s.
