A new process, based on ring spot geometry, is presented for laser surface hardening of large cylindrical components. The proposed technique leads to a very hard, deep and uniform hardened layer along the entire work piece surface without introducing a tempered zone, making the process very attractive compared to conventional induction hardening that exhibits both low energy efficiency and poor flexibility. A complete physical model is presented for the process, together with a study of the influence of process parameters on the final outcome. The results of an extensive validation campaign, carried out on AISI 1040 specimens, are also reported.
L. Orazi, E. Liverani, A. Ascari, A. Fortunato, L. Tomesani (2014). Laser surface hardening of large cylindrical components utilizing ring spot geometry. CIRP ANNALS, 63, 233-236 [10.1016/j.cirp.2014.03.052].
Laser surface hardening of large cylindrical components utilizing ring spot geometry
ORAZI, LEONARDO;LIVERANI, ERICA;ASCARI, ALESSANDRO;FORTUNATO, ALESSANDRO;TOMESANI, LUCA
2014
Abstract
A new process, based on ring spot geometry, is presented for laser surface hardening of large cylindrical components. The proposed technique leads to a very hard, deep and uniform hardened layer along the entire work piece surface without introducing a tempered zone, making the process very attractive compared to conventional induction hardening that exhibits both low energy efficiency and poor flexibility. A complete physical model is presented for the process, together with a study of the influence of process parameters on the final outcome. The results of an extensive validation campaign, carried out on AISI 1040 specimens, are also reported.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
