A Plasma Control and Gas Protection System for Laser Welding of Stainless Steel

Thomas Winther Juhl, Flemming Ove Olsen

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

    Abstract

    A prototype shield gas box with different plasma control nozzles have been investigated for laser welding of stainless steel (AISI 316). Different gases for plasma control and gas protection of the weld seam have been used. The gas types, welding speed and gas flows show the impact on process stability and protection against oxidation. Also oxidation related to special conditions at the starting edge has been investigated. The interaction between coaxial and plasma gas flow show that the coaxial flow widens the band in which the plasma gas flow suppresses the metal plasma. In this band the welds are oxide free. With 2.7 kW power welds have been performed at 4000 mm/min with Ar / He (70%/30%) as coaxial, plasma and shield gas.
    Original languageEnglish
    Title of host publicationProceedings of the Laser Materials Processing Conference : ICALEO '97
    EditorsR. Fabbro, A, Karr, A. Matsunawa
    VolumePTS 1 and 2
    PublisherLaser Institute of America
    Publication date1997
    PagesG248-G255
    ISBN (Print)0-912035-56-0
    Publication statusPublished - 1997
    EventInternational Congress on Applications of Lasers and Electro-Optics - San Diego, CA, United States
    Duration: 17 Nov 199720 Nov 1997

    Conference

    ConferenceInternational Congress on Applications of Lasers and Electro-Optics
    CountryUnited States
    CitySan Diego, CA
    Period17/11/199720/11/1997

    Keywords

    • laser
    • welding
    • stainless
    • steel
    • plasma

    Cite this

    Juhl, T. W., & Olsen, F. O. (1997). A Plasma Control and Gas Protection System for Laser Welding of Stainless Steel. In R. F. A. K. A. M. (Ed.), Proceedings of the Laser Materials Processing Conference: ICALEO '97 (Vol. PTS 1 and 2, pp. G248-G255). Laser Institute of America. http://www.ipl.dtu.dk/publikation/7334/dk/