Simulation of Flow Parameters and Magnetic Forces in Machining of Internal Cam through Viscoelastic Magnetic Abrasive Flow Finishing Process

Abstract

This paper consists of the simulation of flow parameters for an internal cam finished through viscoelastic magnetic abrasive finishing process. Viscoelastic medium comprises Silicone oil and other additives which exhibit viscoelastic properties throughout the finishing process as the change in the temperature does not affect the viscosity of the medium. Carbonyl particles along with Silicon carbide of grit size 800 are thoroughly mixed with the medium prepared. Due to the cohesiveness in the viscoelastic medium, it does not stick to the surface of the internal cam. As the Viscoelastic magnetic abrasive medium flows through the internal cam surface, it is subjected to Magnetic forces generated by arc magnets made of NdFe 35 material, kept at 90o phase difference. Due to this Carbonyl particles, which are Ferro magnetic in nature re orient themselves and the abrasive particles would be thrown to the internal surface of the cam. As the abrasives slide tangentially to the internal surface of the cam and the forces involved during the flow are much higher, the machining of the surface takes place. In the present paper simulation has been made for finding the flow parameters using Ansys 16 and Magnetic field distribution is found using Ansys Maxwell simulation software. The result so obtains claims that the process is suitable for machining the internal cams and the complex shaped object.