Title: Tool selection based on surface roughness in dry facing repair operations of magnesium pieces

Authors: Eva María Rubio; José Luis Valencia; Beatriz De Agustina; Adolfo José Saá

Addresses: Department of Manufacturing Engineering, UNED, C/ Juan del Rosal, 12, E28040-Madrid, Spain ' Department of Statistics and Operation Research III, UCM, Av, Puerta de Hierro s/n, E28040-Madrid, Spain ' Department of Manufacturing Engineering, UNED, C/ Juan del Rosal, 12, E28040-Madrid, Spain ' Department of Manufacturing Engineering, UNED, C/ Juan del Rosal, 12, E28040-Madrid, Spain

Abstract: This paper presents an experimental study on the dry facing of pieces of UNS M11917 magnesium. The work was focused on repair operations that are typically carried out with low-performance cutting conditions. The main goal of this study was to determine the tool that best suits the requirements of surface roughness for these operations. The tools considered had the same geometry but different coatings and were selected from among the most commonly used tools for magnesium and the hybrid structures formed by magnesium and other materials. The effects of spindle speed and feed rate were also considered to determine which factors and their possible interactions are more crucial. The tests were conducted following the Taguchi orthogonal design of experiments (DOE), and the results were analysed by the analysis of variance (ANOVA) method. A model for estimating the expected surface roughness in terms of the average roughness, Ra, was also developed.

Keywords: dry face turning; tool selection; magnesium UNS M11917; surface roughness; Taguchi methods; design of experiments; DOE; analysis of variance; ANOVA; surface quality; dry facing; repair operations; low-performance cutting.

DOI: 10.1504/IJMPT.2014.059021

International Journal of Materials and Product Technology, 2014 Vol.48 No.1/2/3/4, pp.116 - 134

Received: 04 Feb 2013
Accepted: 07 Jul 2013
Published online: 30 May 2014 *

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