Internal Surface Enhancement by Magnetic Abrasive Finishing of Brass Pipe at Different Speeds and Particle Composition

Abstract

Abstract: This study examined the effect of magnetic field on the interior surface finish of Brass UNS C26800 pipe. The parameters sliding velocity of electromagnets, concentration ratio (castor oil and magnetic abrasive particles), and number of cycles were modified within a predetermined range, and their effects on surface finish (%Ra) and material removal rate were determined (MRR). The remaining process parameters remained unchanged throughout the duration of the experiment. In the case of 7:3 and 8:1 concentration ratios, the percentage improvement in surface finish (%Ra) increases and subsequently drops as the sliding velocity of electromagnets increases. The only explanation is because the blunting of abrasives occurs at greater sliding speeds, which reduces the improvement of surface finish. In the event of a concentration ratio of 9:1, however, the percentage increase in surface finish increases with the increase in sliding velocity as a result of the work hardening of the surface, which enables the simple removal of surface peaks. Also, for sliding velocities of 0.62 mm/sec and 1.23 mm/sec, the percentage improvement in surface finish falls with increasing concentration ratio due to the slurrification of magnetic abrasives in the lubricant as a result of increasing oil concentration. At a sliding velocity of 2.46 mm/sec, the improvement in surface finish is proportional to the amount of oil applied due to the increased control and velocity of the surface. In addition, two cycles of electromagnets relative to the workpiece provided the finest surface finish. The MRR increases as sliding velocity increases. Consequently, MRR is minimal at the slowest sliding velocity.