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Статья. Опубликована в журнале "J. Wear". – 2001. – Vol.250. – P. 384-390.
Авторы: V.K. Jain, P. Kumar, P.K. Behera, S.C. Jayswal.Статья на английском языке.Название на русском языке: Влияние рабочего зазора и окружной скорости на выполнение магнитно-абразивной финишной обработки.Аннотация к статье на английском языке:Magnetic abrasive finishing (MAF) is one of the advanced finishing processes in which workpiece is kept between two magnets, and cutting force is controlled by working gap and magnetic field between the two magnets. MAF setup is designed for finishing cylindrical workpieces and it is mounted on lathe machine. The loosely bounded powder is prepared for experimentation by homogeneous mixing of magnetic powder (Fe powder of 300 mesh size (51.4 µm)), abrasive powder (Al<sub>2O<sub>3 of 600 mesh size (25.7 µm), and lubricant called servospin-12 oil. To investigate the effects of working gap and circumferential speed on material removal, change in surface finish and percent improvement in surface finish, a series of experiments have been conducted using in-house fabricated setup. Based upon the results, in general, material removal decreases by increasing working gap or decreasing circumferential speed of the workpiece. Change in surface finish increases by increasing circumferential speed of the workpiece.
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Wear 250 (2001) 384–390 Effect of working gap and circumferential speed on the performance of magnetic abrasive finishing process V.K. Jain∗ , Prashant Kumar, P.K. Behera, S.C. Jayswal Department of Mechanical Engineering, Manufacturing Science Lab, Indian Institute of Technology Kanpur, Kanpur 208016, India Abstract Magnetic abrasive finishing (MAF) is one of the advanced finishing processes in which workpiece is kept between two magnets, and cutting force is controlled by working gap and magnetic field between the two magnets. MAF setup is designed for finishing cylindrical workpieces and it is mounted on lathe machine. The loosely bounded powder is prepared for experimentation by homogeneous mixing of magnetic powder (Fe powder of 300 mesh size (51.4 m)), abrasive powder (Al2 O3 of 600 mesh size (25.7 m), and lubricant called servospin-12 oil. To investigate the effects of working gap and circumferential speed on material removal, change in surface finish and percent improvement in surface finish, a series of experiments have been conducted using in-house fabricated setup. Based upon the results, in general, material removal decreases by increasing working gap or decreasing circumferential speed of the workpiece. Change in surface finish increases by increasing circumferential speed of the workpiece. © 2001 Elsevier Science B.V. All rights reserved. Keywords: Magnetic abrasive finishing (MAF); Non-conventional machining; Nanometer (nm) finish 1. Introduction A relatively new finishing method, magnetic abrasive finishing (MAF) is one such advanced machining process in which cutting force is primarily controlled by the magnetic field. This process can be used to produce efficiently good surface quality of the order of few nanometer finish on flat surfaces as well as internal and external surfaces of tube type workpieces. In MAF, the cutting force (machining pressure) can be controlled by the input current to the electromagnets. In MAF operation, workpiece is kept between the two magnets. The air gap between the workpiece and the magnet, is filled with magnetic abrasive particles (MAPs). MAPs (Fig. 1) is made up of iron powder and abrasive powder. MAPs can be used as unbounded, loosely bounded, or bounded. Bounded MAPs are prepared by sintering of ferromagnetic powder and abrasive powder at a very high pressure and temperature in inert gas atmosphere. Loosely bo