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Article

Laser Microdrilling of Slate Tiles

1
Department of Applied Physics, University of Vigo, EEI, Lagoas-Marcosende 9, 36310 Vigo, Spain
2
Department of Materials Engineering, Applied Mechanics and Construction, University of Vigo, EEI, Lagoas-Marcosende, 36310 Vigo, Spain
*
Author to whom correspondence should be addressed.
Materials 2019, 12(3), 398; https://doi.org/10.3390/ma12030398
Received: 5 December 2018 / Revised: 16 January 2019 / Accepted: 24 January 2019 / Published: 28 January 2019
(This article belongs to the Special Issue Laser Materials Processing 2019)
Slate is a natural rock usually used in roofs, façades, and for tiling. In spite of this broad use, the production process of slate tiles requires substantial improvements. An important quantity of slate from the quarry is wasted during the manufacturing of the final product. Furthermore, processes are not automatized and the production lead times can be considerably shortened. Therefore, new processing methods to increase productivity, reduce costs and to provide added value to the final slate product are required. Drilling is an important part of these manufacturing processes. Conventional drilling processes usually cause the breaking of the slate tiles; then, even a higher quantity of material is wasted. To overcome these problems, lasers emerge as a feasible tool to produce holes in this material, since mechanical stresses are not induced on the workpiece. In this work, we have studied the CO2 laser microdrilling of slate tiles. We used a Design of Experiments (DOE) methodology to determine the influence of the laser processing parameters on the hole quality. This work demonstrates the capability of a CO2 laser to produce holes in slate with less than 100 microns in diameter, avoiding any fracture, and with a processing time of less than 50 ms per hole. Finally, this process demonstrates the viability of the production of high-density micron-sized holes in a slate tile for water draining purposes. View Full-Text
Keywords: CO2 laser; drilling; slate tiles CO2 laser; drilling; slate tiles
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MDPI and ACS Style

Penide, J.; Riveiro, A.; Soto, R.; Boutinguiza, M.; Arias-Gonzalez, F.; del Val, J.; Comesaña, R.; Lusquiños, F.; Quintero, F.; Pou, J. Laser Microdrilling of Slate Tiles. Materials 2019, 12, 398. https://doi.org/10.3390/ma12030398

AMA Style

Penide J, Riveiro A, Soto R, Boutinguiza M, Arias-Gonzalez F, del Val J, Comesaña R, Lusquiños F, Quintero F, Pou J. Laser Microdrilling of Slate Tiles. Materials. 2019; 12(3):398. https://doi.org/10.3390/ma12030398

Chicago/Turabian Style

Penide, Joaquín; Riveiro, Antonio; Soto, Ramón; Boutinguiza, Mohamed; Arias-Gonzalez, Felipe; del Val, Jesús; Comesaña, Rafael; Lusquiños, Fernando; Quintero, Félix; Pou, Juan. 2019. "Laser Microdrilling of Slate Tiles" Materials 12, no. 3: 398. https://doi.org/10.3390/ma12030398

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