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Open AccessArticle

Repairing Hybrid Mg–Al–Mg Components Using Sustainable Cooling Systems

1
Department of Manufacturing Engineering, Industrial Engineering School, Universidad Nacional de Educación a Distancia (UNED), St/Juan del Rosal 12, E28040 Madrid, Spain
2
Department of Mechanical Engineering, University of Aveiro, 3810-193 Aveiro, Portugal
*
Author to whom correspondence should be addressed.
Programa de Doctorado en Tecnologías Industriales.
Materials 2020, 13(2), 393; https://doi.org/10.3390/ma13020393
Received: 5 December 2019 / Revised: 9 January 2020 / Accepted: 13 January 2020 / Published: 15 January 2020
This paper focused on the maintenance or repair of holes made using hybrid Mg–Al–Mg components by drilling, using two sustainable cooling techniques (dry machining and cold compressed air) and taking surface roughness on the inside of the holes as the response variable. The novelty of the work is in proving that the repair operations of the multi-material components (magnesium–aluminum–magnesium) and the parts made of aluminum and magnesium (separately) but assembled to form a higher component can be done simultaneously, thus reducing the time and cost of the assembly and disassembly of this type of component. The study is based on a design of experiments (DOE) defined as a product of a full factorial 23 and a block of two factors (3 × 2). Based on our findings, we propose that the analyzed operations are feasible under sustainable conditions and, in particular, under dry machining. Also, the results depend on the machining order. View Full-Text
Keywords: hybrid components; light alloys; magnesium; aluminum; drilling; dry machining; cold compressed air; lubrication and cooling systems; arithmetical mean roughness; Ra; average maximum height; Rz; repair and maintenance operations hybrid components; light alloys; magnesium; aluminum; drilling; dry machining; cold compressed air; lubrication and cooling systems; arithmetical mean roughness; Ra; average maximum height; Rz; repair and maintenance operations
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Blanco, D.; Rubio, E.M.; Marín, M.M.; Davim, J.P. Repairing Hybrid Mg–Al–Mg Components Using Sustainable Cooling Systems. Materials 2020, 13, 393.

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