Abstract
In the case of the internal finishing of a bent tube by a magnetic abrasive finishing process, the magnetic field, therefore the finishing force, is non-uniform in all finishing areas due to the geometry. This affects the abrasive behavior against the inner surface of the bent tube, changing the finishing characteristics. This paper discusses the effects of the orientation and position of the magnetic poles with respect to the bent tube on the magnetic field, the abrasive behavior, and the finishing characteristics at the bent section. The finishing experiments of elbows indicate that the non-uniformity of the finishing characteristics at the bent section can be diminished by offsetting the axis of the poles' rotation from the elbow axis.
