Title: Modelling of nano-finishing forces and surface roughness in abrasive flow finishing process using rheological properties

Authors: Sachin Singh; M. Ravi Sankar; V.K. Jain; J. Ramkumar

Addresses: Department of Mechanical Engineering, IIT Guwahati, Guwahati, 781039, India ' Department of Mechanical Engineering, IIT Guwahati, Guwahati, 781039, India ' Department of Mechanical Engineering, IIT Kanpur, Kanpur, 208016, India ' Department of Mechanical Engineering, IIT Kanpur, Kanpur, 208016, India

Abstract: Abrasive flow finishing (AFF) is one of the advanced nano-finishing technologies which is especially used to finish products that are not easily finished by traditional finishing processes. Rheology of the medium used for finishing plays a vital role in determining the magnitude of finishing forces generated during AFF process which in turn determines the end finish of the components. The finishing forces are evaluated by studying the rheological properties of the AFF medium in the present paper. Theoretical model for calculating the change in surface roughness with respect to change in AFF stokes, extrusion pressure and weight percentage of plasticiser is developed. Theoretical results are compared with the experimental results. It is found that theoretically change in surface roughness increases with the increase in AFF strokes and extrusion pressure while it decreases with the increase in weight percentage of plasticiser.

Keywords: modelling; abrasive flow finishing; AFF stokes; extrusion pressure; plasticiser weight percentage; deburring; shear rate; storage modulus; loss modulus; modelling; nanofinishing forces; surface roughness; surface quality; rheology; nanotechnology.

DOI: 10.1504/IJPTECH.2016.078179

International Journal of Precision Technology, 2016 Vol.6 No.2, pp.123 - 141

Received: 26 Jun 2015
Accepted: 14 Dec 2015
Published online: 07 Aug 2016 *

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