Professional paper

https://doi.org/10.19279/TVZ.PD.2024-12-3-15

LASER WELDING OF STRUCTURAL STEEL S355

Ivan Simetić orcid.org/0009-0001-7848-2690 ; Istrian University of Applied Sciences -Università Istriana di scienze applicate, Preradovićeva 9D, 52100 Pula, Croatia *
Vedrana Špada orcid.org/0000-0002-2853-2661 ; Istrian University of Applied Sciences -Università Istriana di scienze applicate, Preradovićeva 9D, 52100 Pula, Croatia *
Neven Munjas orcid.org/0000-0002-1301-3818 ; Istrian University of Applied Sciences -Università Istriana di scienze applicate, Preradovićeva 9D, 52100 Pula, Croatia *

* Corresponding author.

Abstract

When choosing a welding method, it is necessary to consider various factors such as welding speed, welding temperature, the need for additional material, the need for energy source, size, cost, and the ease of maintenance of the equipment and apparatus. In this paper, the application of laser welding on structural steel S355 is investigated using an industrial device designed for this purpose. After thorough surface preparation and optimization of the parameters for both the initial and multiple passes, laboratory tests were conducted, including non-destructive (NDT) and destructive (DT) methods. The results show that the applied method is capable of producing a homogeneous and high-quality welded joint with minimal damage caused by the generated heat. The paper provides a detailed analysis of parameters such as scanning speed, laser beam width, power, and frequency, and the obtained mechanical characteristics are compared with relevant norms and standards.

Keywords

Laser welding; structural steel S355; mechanical properties; NDT; DT

Hrčak ID:

330609

URI

https://hrcak.srce.hr/330609

Publication date:

14.1.2025.

Article data in other languages: croatian

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