In this paper a numerical simulation of laser hardening process is presented. The Finite Difference Method (FDM) was used to solve the heat transfer and the carbon diffusion equations for a defined workpiece geometry. The model is able to predict the thermal cycle into the target material, the phase transformations and the resulting micro-structures according to the laser parameters, the workpiece dimensions and the physical properties of the workpiece. The effects of the overlapping tracks of the laser beam on the resulting micro-structures is also considered. The initial workpiece micro-structure is taken into account in the simulation by a digitized photomicrograph of the ferrite perlite distribution before the thermal cycle. Experimental tests were realized on a C43 plate and the good agreement between the theoretical and experimental results is shown.
Laser Hardening Process Simulation for Mechanical Parts / G. Tani; L. Orazi; A. Fortunato; G. Campana;G. Cuccolini. - ELETTRONICO. - 6454:(2007), pp. 1-13. (Intervento presentato al convegno SPIE PHOTONICS WEST - LASE 2007 - Lasers and Apllications in Science and Technology tenutosi a San Josè Convention Centre, San Josè, California, USA nel 20-25 Gennaio 2007).
Laser Hardening Process Simulation for Mechanical Parts
TANI, GIOVANNI;ORAZI, LEONARDO;FORTUNATO, ALESSANDRO;CAMPANA, GIAMPAOLO;CUCCOLINI, GABRIELE
2007
Abstract
In this paper a numerical simulation of laser hardening process is presented. The Finite Difference Method (FDM) was used to solve the heat transfer and the carbon diffusion equations for a defined workpiece geometry. The model is able to predict the thermal cycle into the target material, the phase transformations and the resulting micro-structures according to the laser parameters, the workpiece dimensions and the physical properties of the workpiece. The effects of the overlapping tracks of the laser beam on the resulting micro-structures is also considered. The initial workpiece micro-structure is taken into account in the simulation by a digitized photomicrograph of the ferrite perlite distribution before the thermal cycle. Experimental tests were realized on a C43 plate and the good agreement between the theoretical and experimental results is shown.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.