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Proceedings Paper

New nonconventional process: cold and hot laser surface treatment of steels
Author(s): Giuseppe Palombarini; Giuseppe Daurelio; Giuseppe Chita; Fabrizio Memola Capece Minutolo
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Paper Abstract

This experimental research work presents for the first time the results obtained by using a new non-conventional process, that is a cold and hot laser surface tratment on steels. The aim is to obtain Surface Hardening Structure by a sharp change in temperature obtained by employing a laser beam that passes on steel surfaces , having many tenths degrees below zero (≈ -196°C). The materials experimented have been some different Carbon Steels as Constructional ones (Fe 510 - Fe 360 B) and Medium and High Carbon content Steels ( C40-C70 ). The innovation of this new process consists havig to use a powerfull cooling medium - the liquid Nitrogen - into a Dewar recipient in which the steel has immersed for some minutes. The preliminary researches and tests have shown that, also on steels having a low content of Carbon, the Surface Hardness has significantly increased, so to reach values up to an increase of about 50% respect to the relate value measured on the base material.

Paper Details

Date Published: 10 November 2003
PDF: 9 pages
Proc. SPIE 5120, XIV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers, (10 November 2003); doi: 10.1117/12.515446
Show Author Affiliations
Giuseppe Palombarini, Univ. degli Studi di Bologna (Italy)
Giuseppe Daurelio, Centro Laser S.c.r.l (Italy)
Giuseppe Chita, Centro Laser S.c.r.l (Italy)
Fabrizio Memola Capece Minutolo, Univ. degli Studi di Napoli Federico II (Italy)


Published in SPIE Proceedings Vol. 5120:
XIV International Symposium on Gas Flow, Chemical Lasers, and High-Power Lasers

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