The effect of shielding gas composition on welding performance and weld properties in hybrid CO2 laser-gas metal arc welding of carbon manganese steel

Anna Fellman, Veli Kujanpää

    Research output: Contribution to journalArticleScientificpeer-review

    24 Citations (Scopus)

    Abstract

    Metals industries producing large structures currently have a particular interest in hybrid laser welding processes, which possess advantages compared with conventional methods of welding. One major benefit is a reduction in deformation that enables the amount of postweld finishing work to be reduced. Assembly then also becomes simpler because of the greater accuracy that may be achieved. Larger joint tolerances may be accommodated compared with laser welding alone. By using appropriate filler metal, the weld metal composition may be controlled to meet metallurgical criteria. The hybrid CO2 laser–gas metal arc (GMA) welding process was investigated in this study; the aim being to clarify the effects of process gas composition on welding performance, weld cross section, quality, and mechanical properties, when welding carbon manganese steel. Helium, argon, and carbon dioxide were used in varying proportions as shielding gases for welding I-butt and T-butt joints. The composition of the shielding gas was found to affect welding performance, weld quality, and weld cross-section geometry. The best results were obtained by using argon, with a helium content of 40%–50% and a carbon dioxide content of 2%–5%; the exact composition depending on the groove edge quality. Hybrid laser welds of high quality may be produced in carbon manganese steel with a variety of shielding gas compositions, but to maximize productivity, reliability, and quality, while minimizing gas cost, the composition must be selected carefully.
    Original languageEnglish
    Pages (from-to)12-20
    Number of pages9
    JournalJournal of Laser Applications
    Volume18
    Issue number1
    DOIs
    Publication statusPublished - 2006
    MoE publication typeA1 Journal article-refereed

    Fingerprint

    arc welding
    Gas metal arc welding
    gas lasers
    Steel
    gas composition
    Manganese
    welding
    Shielding
    shielding
    manganese
    Welding
    Welds
    Carbon
    Gases
    steels
    Lasers
    carbon
    Chemical analysis
    laser welding
    metals

    Cite this

    @article{3da2572e69144cd7a2253c66b35378d5,
    title = "The effect of shielding gas composition on welding performance and weld properties in hybrid CO2 laser-gas metal arc welding of carbon manganese steel",
    abstract = "Metals industries producing large structures currently have a particular interest in hybrid laser welding processes, which possess advantages compared with conventional methods of welding. One major benefit is a reduction in deformation that enables the amount of postweld finishing work to be reduced. Assembly then also becomes simpler because of the greater accuracy that may be achieved. Larger joint tolerances may be accommodated compared with laser welding alone. By using appropriate filler metal, the weld metal composition may be controlled to meet metallurgical criteria. The hybrid CO2 laser–gas metal arc (GMA) welding process was investigated in this study; the aim being to clarify the effects of process gas composition on welding performance, weld cross section, quality, and mechanical properties, when welding carbon manganese steel. Helium, argon, and carbon dioxide were used in varying proportions as shielding gases for welding I-butt and T-butt joints. The composition of the shielding gas was found to affect welding performance, weld quality, and weld cross-section geometry. The best results were obtained by using argon, with a helium content of 40{\%}–50{\%} and a carbon dioxide content of 2{\%}–5{\%}; the exact composition depending on the groove edge quality. Hybrid laser welds of high quality may be produced in carbon manganese steel with a variety of shielding gas compositions, but to maximize productivity, reliability, and quality, while minimizing gas cost, the composition must be selected carefully.",
    author = "Anna Fellman and Veli Kujanp{\"a}{\"a}",
    year = "2006",
    doi = "10.2351/1.2164481",
    language = "English",
    volume = "18",
    pages = "12--20",
    journal = "Journal of Laser Applications",
    issn = "1042-346X",
    number = "1",

    }

    The effect of shielding gas composition on welding performance and weld properties in hybrid CO2 laser-gas metal arc welding of carbon manganese steel. / Fellman, Anna; Kujanpää, Veli.

    In: Journal of Laser Applications, Vol. 18, No. 1, 2006, p. 12-20.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - The effect of shielding gas composition on welding performance and weld properties in hybrid CO2 laser-gas metal arc welding of carbon manganese steel

    AU - Fellman, Anna

    AU - Kujanpää, Veli

    PY - 2006

    Y1 - 2006

    N2 - Metals industries producing large structures currently have a particular interest in hybrid laser welding processes, which possess advantages compared with conventional methods of welding. One major benefit is a reduction in deformation that enables the amount of postweld finishing work to be reduced. Assembly then also becomes simpler because of the greater accuracy that may be achieved. Larger joint tolerances may be accommodated compared with laser welding alone. By using appropriate filler metal, the weld metal composition may be controlled to meet metallurgical criteria. The hybrid CO2 laser–gas metal arc (GMA) welding process was investigated in this study; the aim being to clarify the effects of process gas composition on welding performance, weld cross section, quality, and mechanical properties, when welding carbon manganese steel. Helium, argon, and carbon dioxide were used in varying proportions as shielding gases for welding I-butt and T-butt joints. The composition of the shielding gas was found to affect welding performance, weld quality, and weld cross-section geometry. The best results were obtained by using argon, with a helium content of 40%–50% and a carbon dioxide content of 2%–5%; the exact composition depending on the groove edge quality. Hybrid laser welds of high quality may be produced in carbon manganese steel with a variety of shielding gas compositions, but to maximize productivity, reliability, and quality, while minimizing gas cost, the composition must be selected carefully.

    AB - Metals industries producing large structures currently have a particular interest in hybrid laser welding processes, which possess advantages compared with conventional methods of welding. One major benefit is a reduction in deformation that enables the amount of postweld finishing work to be reduced. Assembly then also becomes simpler because of the greater accuracy that may be achieved. Larger joint tolerances may be accommodated compared with laser welding alone. By using appropriate filler metal, the weld metal composition may be controlled to meet metallurgical criteria. The hybrid CO2 laser–gas metal arc (GMA) welding process was investigated in this study; the aim being to clarify the effects of process gas composition on welding performance, weld cross section, quality, and mechanical properties, when welding carbon manganese steel. Helium, argon, and carbon dioxide were used in varying proportions as shielding gases for welding I-butt and T-butt joints. The composition of the shielding gas was found to affect welding performance, weld quality, and weld cross-section geometry. The best results were obtained by using argon, with a helium content of 40%–50% and a carbon dioxide content of 2%–5%; the exact composition depending on the groove edge quality. Hybrid laser welds of high quality may be produced in carbon manganese steel with a variety of shielding gas compositions, but to maximize productivity, reliability, and quality, while minimizing gas cost, the composition must be selected carefully.

    U2 - 10.2351/1.2164481

    DO - 10.2351/1.2164481

    M3 - Article

    VL - 18

    SP - 12

    EP - 20

    JO - Journal of Laser Applications

    JF - Journal of Laser Applications

    SN - 1042-346X

    IS - 1

    ER -