THE EFFECT OF THE LASER SPOTS OVERLAP ON THE STRUCTURE DURING SQUARE PARTS QUENCHING OF 1.1191 STEEL

1 KIRSCHNER Vít
Co-authors:
1 BRUTHANSOVÁ Romana 1 ŠVEC Martin 1 DVOŘÁK Libor
Institution:
1 VÚTS a.s., Laser Application Center, Svárovská 619, Liberec 11, 460 01, the Czech Republic, vit.kirschner@vuts.cz
Conference:
24th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, June 3rd - 5th 2015
Proceedings:
Proceedings 24th International Conference on Metallurgy and Materials
Pages:
1113-1117
ISBN:
978-80-87294-58-1
ISSN:
2694-9296
Published:
12th January 2015
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
237 views / 113 downloads
Abstract

Laser technologies are among the unconventional methods of heat treatment and machining. Among the biggest advantages of laser quenching (hardening), it can be included high speed and process efficiency, a narrow thermally affected area and the possibility of processing complicated parts in shape that could not be workable with common conventional methods. During laser quenching of large surface parts, it is necessary to solve the problem of mutual overlap of laser spots. There is an unquenched area when insufficiently overlapped; with a large overlap, it can occur a tempering of the already quenched belt. Both cases negatively influence the resulting structure and mechanical properties.This article deals with finding the optimal degree of point laser spot overlap to ensure a high-quality quenching of large surface parts and with setting appropriate quenching parameters.

Keywords: laser quenching, laser spots overlap, microstructure, 1.1191 steel

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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