NDLI: Thick Plate CO$_{2}$-Laser Based Hybrid Welding of Structural Steels

Content Provider	Springer Nature Link
Author	Kristensen, J. K.
Copyright Year	2009
Abstract	Laser and hybrid laser-arc welding are after two decades of intensive work now well-established processes in the welding of structural steels as well as other materials. Many results have been reported over the years and many advantages in comparison with traditional welding processes have been obtained. Very thick part laser welding using penetration depth in excess of approximately 12 mm in structural steel does however continue to be a serious challenge. This is partly due to limitations in the achievable welding depth because the penetration as a function of laser power shows a very non-linear behaviour, and partly to the large molten volume that must be controlled. Although fibre- and disc-lasers today are being developed to high powers, CO$_{2}$-lasers sources are still dominating larger penetration welding. In the present investigation the potential and limitations of hybrid CO$_{2}$-laser/MAG welding of thick plate structural steels have been investigated. Welds in excess of 12 mm thickness of structural steels are presented together with achieved mechanical properties as e.g. hardness, toughness and fatigue. The investigations were made using structural steels of the grades S235, S355 and S690QL.
Starting Page	48
Ending Page	57
Page Count	10
File Format	PDF
ISSN	00432288
Journal	Welding in the World
Volume Number	53
Issue Number	1-2
e-ISSN	18786669
Language	English
Publisher	Springer-Verlag
Publisher Date	2013-02-07
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Metallic Materials Theoretical and Applied Mechanics Continuum Mechanics and Mechanics of Materials
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Metals and Alloys Mechanical Engineering

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