Double-sided Hybrid Laser-Arc Welding of 25 mm S690QL High Strength Steel
Open Access
- 1 November 2021
- journal article
- Published by IOP Publishing in IOP Conference Series: Materials Science and Engineering
- Vol. 1135 (1)
- https://doi.org/10.1088/1757-899x/1135/1/012004
Abstract
Hybrid Laser-Arc Welding (HLAW) technique is an enabler for the next generation high efficiency we lding, bu t in dustrial ad option ha s be en li mited du e to pr ocess complexity. Previously documented challenges with root cracks posed by incomplete penetration were significant; h owever, t his w ork p resents s uccessful w eld s amples p repared f rom S 690QL steel welded from two sides with a 16 kW disc laser. Weld travel speeds below 500 mm/min and weld line energies between 1.7 and 1.9 kJ/mm gave sound weld samples, evaluated for yield strength, elongation, hardness and Charpy-V toughness according to DS/EN ISO 10025-6:2004+A1. The results shown here indicate a significant i ncrease i n t he overall e fficiency of but t wel ds in high strength steels and further cement the HLAW process for high strength steels. It is shown that the consecutive nature of the weld procedure led to non-negligible interpass temperatures for the second weld.This publication has 18 references indexed in Scilit:
- A numerical model for full and partial penetration hybrid laser welding of thick-section steelsOptics & Laser Technology, 2018
- Double-sided hybrid laser-MIG welding plus MIG welding of 30-mm-thick aluminium alloyThe International Journal of Advanced Manufacturing Technology, 2018
- Single pass hybrid laser-arc welding of 25 mm thick square groove butt jointsMaterials & Design, 2016
- Laserstrahl‐MSG‐Hybridschweißen von Feinkornbaustählen für den Einsatz im StahlbauStahlbau, 2015
- Improvement of Weld Characteristics by Laser-Arc Double-Sided Welding Compared to Single Arc WeldingJournal of Materials Engineering and Performance, 2015
- Fiber Laser Welding of Direct-Quenched Ultrahigh Strength Steels: Evaluation of Hardness, Tensile Strength, and Toughness Properties at Subzero TemperaturesJournal of Manufacturing Science and Engineering, 2015
- GMA-laser Hybrid Welding of High-strength Fine-grain Structural Steel with an Inductive PreheatingPhysics Procedia, 2014
- Numerical Analysis of Hot Cracking in Laser-Hybrid Welded TubesAdvances in Materials Science and Engineering, 2013
- Geometrical aspects of hot cracks in laser-arc hybrid weldingJournal of Laser Applications, 2013
- Joining of thick section steels using hybrid laser weldingIron and Steelmaking, 2008