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Proceedings Paper

Some technical methods to study the roughness of some surfaces generated into metallic targets by laser micro piercing in determined conditions
Author(s): Corina Bokor; Ileana B. Rau; Ilie V. Isarie; Claudiu Isarie; Wilhelm Kappel; Doina Mortoiu; Stelian Ticusan; Sorin Itu
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Paper Abstract

Dimensional machining realized by laser beam and/or another concentrated energy sources in metallic targets, is based on melting, vaporisation and expulsion of some quantities of metal as a function of radiation parameters and material nature. In some cases as: drawing plates used for the synthetic wires, fine fuel filters or fuel injectors, for the internal surface of the hole, is prefered more roughness in comparison of the holes, realized by classic piercing. For instance, to realize some textures of simple synthetic fibres or in combination with natural fibres we want to have not a smooth surface, but a rough one because in this way, the texture will be more resistant in the places exposed at different efforts. Concerning the fuel injectors we prefere the same: a rough surface, in order to ensure a better pulverized jet of the fuel. In the same time, when the hole is machined with a concentrated energy: L.B.M., E.B.M. a.s.o. the injector has a longer life. It is not very easy to study the roughness resulted by L.B.M. in a less than 0.2 mm diameter hole. To avoid errors of investigation, authors have experienced on pieces of carbide and alloyed steel which were bored on separate adjacent plans, and in this way, the bored surfaces were not affected by a cutting operation after boring, for such small diameters.

Paper Details

Date Published: 19 November 2012
PDF: 6 pages
Proc. SPIE 8545, Optical Materials and Biomaterials in Security and Defence Systems Technology IX, 85450P (19 November 2012); doi: 10.1117/12.976836
Show Author Affiliations
Corina Bokor, Univ. Lucian Blaga in Sibiu (Romania)
Ileana B. Rau, Polytechnical Univ. of Bucharest (Romania)
Ilie V. Isarie, Univ. Lucian Blaga in Sibiu (Romania)
Claudiu Isarie, Univ. Lucian Blaga in Sibiu (Romania)
Wilhelm Kappel, National Institute for Research and Development for Electrical Engineering (Romania)
Doina Mortoiu, Aurel Vlaicu Univ. of Arad (Romania)
Stelian Ticusan, Univ. Lucian Blaga in Sibiu (Romania)
Sorin Itu, Univ. Lucian Blaga in Sibiu (Romania)

Published in SPIE Proceedings Vol. 8545:
Optical Materials and Biomaterials in Security and Defence Systems Technology IX
Roberto Zamboni; François Kajzar; Attila A. Szep, Editor(s)

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