Advanced Materials Research Vols. 53-54 (2008) pp 137-140 online at http://www.scientific.net © (2008) Trans Tech Publications, Switzerland Polishing Processing to Internal Surface of Non-magnetic Pipe by Magnetic Abrasive Finishing Y. Chen1, a, X. Wang 1, b and C. J. Zhang 2 1 Department of Mechanical Engineering, University of Science and Technology Liaoning, 114051, China 2 Anshan Iron and Steel Group Company Heavy Machine CO., LTD, 114031, China a
[email protected], b
[email protected] Keywords: Magnetic abrasive finishing, Non-magnetic workpiece, Thin pipe, Magnetic density, Machining efficiency Abstract. It is very difficult matter that polishes the internal surface of the pipe, especially to the thin pipe with the traditional surface technology. Because a usual tool cannot into the inner surface of the thin pipe and automation do not achieved easily. This paper brings up a new method that utilize the characteristic of the magnetic force line may penetrate the non-magnetic material, may using the magnetic abrasive finishing (MAF) method complete to the inner surface of the thin pipe precise polishing. The magnetic abrasive finishing does not need special equipment to complete the complex shape internal surface polishing. Moreover, we already obtained the famous processing effect through the experiment. Meanwhile this paper analyses some factors of influences efficiency, and propose some solution method. Introduction Recently, high precision pipe is highly increasing need in some area like medical equipment and astronautics industry. Since a high-purity gas or liquid is required to transport, that increase the requirement of internal surface roughness of pipe. However, because of the limitation of using environment, most pipes are the long and shape is very complex, their caliber is very small too. As a result, the ordinary tool is very difficult to solve this problem; even use the manual work still is very difficult to process. This paper brings up a new method to polishing the thin pipe’s internal surface by magnetic abrasive finishing. This method is flexible, self-adaptive, and self-sharpen, which displays the superiority that compare with traditional way. Polishing to the Thin Pipe Fig. 1 shows a schematic diagram of magnetic abrasive finishing. The magnetic pole fixes the outside of the workpiece. Put the magnetic abrasive particles to the inside of n