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Slag characterisation of 308L-type stainless steel rutile flux-cored wires

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Abstract

The behaviour of the weld characteristic of flux-cored wires is strongly influenced by the flux. The weld metal and weldability are determined by the flux composition and to a much smaller level by shielding gas used as well. The wide variety of components combined with the complexity of the welding process result in intricate mechanisms occurring in the slag. The slags of the different rutile flux-cored wires, designed for either position or standard downhand welding, were analysed in order to gain knowledge about the complex slag mechanisms and to carry out a metallurgical characterisation. Chemical analysis, differential thermal analysis and microstructural investigations of the slags were conducted to identify and characterise the formed phases. In addition, the viscosities of the slags were measured and correlated with the DTA results.

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Funding

The authors gratefully acknowledge financial support from the K1-MET GmbH Metallurgical Competence Centre. The research program of the K1-MET Competence Centre is supported by COMET (Competence Centre for Excellent Technologies), the Austrian program for competence centres. COMET is funded by the Federal Ministry for Transport, Innovation, and Technology, the Federal Ministry for Science, Research and Economy, the provinces of Upper Austria, Tyrol, and Styria as well as the Styrian Business Promotion Agency (SFG).

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Authors and Affiliations

  1. voestalpine Böhler Welding Austria GmbH, Böhler Welding Str. 1, A-8605, Kapfenberg, Austria

    Sylvia Holly

  2. Department of Ferrous Metallurgy, Montanuniversitaet Leoben, A-8700, Leoben, Austria

    Peter Mayer & Christian Bernhard

  3. Fronius International GmbH, Froniusplatz 1, A-4600, Wels, Austria

    Gerhard Posch

Authors
  1. Sylvia Holly
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  2. Peter Mayer
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  3. Christian Bernhard
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  4. Gerhard Posch
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Corresponding author

Correspondence to Sylvia Holly.

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Recommended for publication by Commission IX - Behaviour of Metals Subjected to Welding

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Holly, S., Mayer, P., Bernhard, C. et al. Slag characterisation of 308L-type stainless steel rutile flux-cored wires. Weld World 63, 293–311 (2019). https://doi.org/10.1007/s40194-018-0675-6

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  • DOI: https://doi.org/10.1007/s40194-018-0675-6

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