Abstract: The needs of motion trace and speed of stainless steel tube internal finishing are analysed. Several kinds of exciting magnetic field and finishing motion trace are researched, the exciter which realized rotating magnetic field and reciprocating magnetic field at the same time is proposed. A new type of rotating magnetic field equipment which can complete complex motion trace is designed. The rotating magnetic field produces wavy finishing stripe by distributing the magnetic poles along axial direction. It also makes magnetic abrasive particles move along circumferential direction and axial direction of the tube at the same time. The 316L tube material removal test is carried out by the rotating magnetic field setup.

Key words: Magnetic abrasive finishing, Reciprocating magnetic field, Rotating magnetic field, Tubing