Study on Internal Finishing of a Non-Ferromagnetic Tubing by Magnetic Abrasive Machining Process

Abstract

This paper describes a new internal finishing process of a non-ferromagnetic tubing by magnetic abrasive machining and its finishing characteristics, in which the suitable concentrative magnetic field is performed in the inner working region of a tubing by N-S magnetic poles settled in the outer side so that the magnetic force as finishing pressure acts upon magnetic abrasive particles to the internal surface. From the experimental results, it is found that 4 μmRmax in surface roughness of a stainless steel sanitary tubing (SUS 304, 38.1 mm in outer dia., 1.2 mm in thickness and 200 mm in length) is improved to 0.1 μmRmax in 10 minutes finishing time. © 1988, The Japan Society for Precision Engineering. All rights reserved.