Modares Mechanical Engineering

Modares Mechanical Engineering

The Effect of the Machining Parameters of Magnetic Abrasive Finishing on the Concave Surface of Cold-Worked Steel

Document Type : Original Research

Author
Amir Ehsan Jaberi
Malek ashtar University of Technology
Abstract
Magnetic abrasive finishing process (MAF) is one of the latest advanced machining processes. After eight decades have passed since the registration of the magnetic abrasive polishing process, the applicability of this method has been proven in finishing all kinds of surfaces, including flat, cylindrical and free surfaces. In this research, the influence of MAF process movement parameters on the concave surface of cold-worked steel has been investigated experimentally using the response surface method. These parameters include rotational speed, linear speed, gap between abrasive brush and workpiece, magnetic flux density and curvature angle. For this purpose, a spherical head magnet is used and the powder used is prepared by mechanical alloying method. Cold-worked steel is used in the manufacture of roll forming molds, which is used in air engines to shape compressor and turbine blades, and also to investigate the feasibility of the MAF process on the workpiece surface with high hardness and yield stress, such as Cold work steel is selected. According to the results, the optimal value of the magnetic flux density is 0.55 tesla, and with the increase of the distance between the abrasive brush and the workpiece, the surface roughness changes initially increase and decrease after passing the optimal value.
Keywords
Magnetic abrasive finishing
Machining
Steel
concave surface
free surface
Design of Experiments
Response surface method

Subjects

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Modares Mechanical Engineering
Volume 22, Issue 10
October 2022
Pages 201-207