Numéro
J. Phys. IV France
Volume 120, December 2004
Page(s) 315 - 323
DOI http://dx.doi.org/10.1051/jp4:2004120036


J. Phys. IV France 120 (2004) 315-323

DOI: 10.1051/jp4:2004120036

Optimisation of the laser surface remelting process on strain criteria

J. Grum1 and R. Sturm2

1  Faculty of Mechanical Engineering, University of Ljubljana, Askerceva 6, 1000 Ljubljana, Sloveni
2  Faculty of Mechanical Engineering, University of Ljubljana, Askerceva 6, 1000 Ljubljana, Slovenia

janez.grum@fs.uni-lj.si

Abstract
This paper shows a process of selection of optimum conditions for laser remelting of nodular cast iron. The optimisation takes into account a specified depth of the hardened layer, for which an appropriate energy input is specified while taking into account the mode of guiding the laser beam. Strain criteria are given for the optimisation of the remelting process, i.e., minimum energy input at a given depth of the hardened layer, minimum distortion of the machine part and a desired variation of residual stresses across the hardened layer. Practical tests of optimisation showed the logic of adhering to the aforementioned criteria, because we can significantly influence the quality of the product at lower costs of manufacturing.



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