Plasma Arc Augmented CO2 laser welding

Claus Bagger, Mikkel Andersen, Niels Frederiksen, Sigurdur Leifsson, Flemming Ove Olsen

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review


    In order to reduce the hardness of laser beam welded 2.13 mm medium strength steel CMn 250, a plasma arc has been used simultaneously with a 2.6 kW CO2 laser source. In a number of systematic laboratory tests, the plasma arc current, plasma gas flow and distance to the laser source were varied with all laser parameters fixed. The welds were quality assessed and hardness measured transversely to the welding direction in the top, middle and root of the seam. In the seams welded by laser alone, hardness values between 275 and 304 HV1 were measured, about the double of the base material, 150 HV1. With the addition of a plasma arc, the hardness could overall be reduced to between 200 and 220 HV1, i.e. about 27 percent. In the seam middle, the reduction was 36 percent.
    Original languageEnglish
    Title of host publication8th NOLAMP Conference
    EditorsFO Olsen, J K Kristensen
    Publication date2001
    Publication statusPublished - 2001
    Event8th Conference on Laser materials Processing in the Nordic Countries - Copenhagen, Denmark
    Duration: 13 Aug 200115 Aug 2001
    Conference number: 8


    Conference8th Conference on Laser materials Processing in the Nordic Countries
    Internet address


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