The bottleneck in laser hardening principally occurs when large surfaces have to be treated because this process situation leads to multi-tracks laser scanning in order to treat all the component surface. Unfortunately, multi-tracks laser trajectories generate an unwanted tempering effect that depends on the overlapping of two close trajectories. To reduce the softening effects, a simulator capable to optimize the process parameters such as laser power and speed, number and types of trajectories, could sensibly increase the applicability of the process. In this paper an original model for the tempering is presented. By introducing a tempering time factor for the martensitic transformation, the hardness reduction can be predicted according to any laser process parameters, material and geometry. Experimental comparisons will be presented to prove the accuracy of the model.
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ASME 2009 International Manufacturing Science and Engineering Conference
October 4–7, 2009
West Lafayette, Indiana, USA
Conference Sponsors:
- Manufacturing Engineering Division
ISBN:
978-0-7918-4362-8
PROCEEDINGS PAPER
A New Computationally Efficient Model for Tempering in Multi-Tracks Laser Hardening
Alessandro Fortunato,
Alessandro Fortunato
University of Bologna, Bologna, Italy
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Leonardo Orazi,
Leonardo Orazi
University of Modena-Reggio Emilia, Reggio Emilia, Italy
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Giovanni Tani
Giovanni Tani
University of Bologna, Bologna, Italy
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Alessandro Fortunato
University of Bologna, Bologna, Italy
Leonardo Orazi
University of Modena-Reggio Emilia, Reggio Emilia, Italy
Giovanni Tani
University of Bologna, Bologna, Italy
Paper No:
MSEC2009-84093, pp. 667-675; 9 pages
Published Online:
September 20, 2010
Citation
Fortunato, A, Orazi, L, & Tani, G. "A New Computationally Efficient Model for Tempering in Multi-Tracks Laser Hardening." Proceedings of the ASME 2009 International Manufacturing Science and Engineering Conference. ASME 2009 International Manufacturing Science and Engineering Conference, Volume 2. West Lafayette, Indiana, USA. October 4–7, 2009. pp. 667-675. ASME. https://doi.org/10.1115/MSEC2009-84093
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