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.

A New Computationally Efficient Model for Tempering in Multi-Tracks Laser Hardening / A., Fortunato; Orazi, Leonardo; G., Tani. - ELETTRONICO. - 2:(2009), pp. 667-675. ((Intervento presentato al convegno ASME International Manufacturing Science and Engineering Conference 2009, MSEC2009 tenutosi a West Lafayette, IN, usa nel October 4-7, 2009 [10.1115/MSEC2009-84093].

A New Computationally Efficient Model for Tempering in Multi-Tracks Laser Hardening.

ORAZI, Leonardo;
2009-01-01

Abstract

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.
ASME International Manufacturing Science and Engineering Conference 2009, MSEC2009
West Lafayette, IN, usa
October 4-7, 2009
2
667
675
A., Fortunato; Orazi, Leonardo; G., Tani
A New Computationally Efficient Model for Tempering in Multi-Tracks Laser Hardening / A., Fortunato; Orazi, Leonardo; G., Tani. - ELETTRONICO. - 2:(2009), pp. 667-675. ((Intervento presentato al convegno ASME International Manufacturing Science and Engineering Conference 2009, MSEC2009 tenutosi a West Lafayette, IN, usa nel October 4-7, 2009 [10.1115/MSEC2009-84093].
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/613799
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 7
  • ???jsp.display-item.citation.isi??? 1
social impact