Characterization of Flame Cut Heavy Steel: Modeling of Temperature History and Residual Stress Formation

T. Jokiaho, A. Laitinen, S. Santa-aho, M. Isakov, P. Peura, T. Saarinen, A. Lehtovaara, M. Vippola

    Tutkimustuotos: ArtikkeliScientificvertaisarvioitu

    5 Sitaatiot (Scopus)
    23 Lataukset (Pure)

    Abstrakti

    Heavy steel plates are used in demanding applications that require both high strength and hardness. An important step in the production of such components is cutting the plates with a cost-effective thermal cutting method such as flame cutting. Flame cutting is performed with a controlled flame and oxygen jet, which burns the steel and forms a cutting edge. However, the thermal cutting of heavy steel plates causes several problems. A heat-affected zone (HAZ) is generated at the cut edge due to the steep temperature gradient. Consequently, volume changes, hardness variations, and microstructural changes occur in the HAZ. In addition, residual stresses are formed at the cut edge during the process. In the worst case, unsuitable flame cutting practices generate cracks at the cut edge. The flame cutting of thick steel plate was modeled using the commercial finite element software ABAQUS. The results of modeling were verified by X-ray diffraction-based residual stress measurements and microstructural analysis. The model provides several outcomes, such as obtaining more information related to the formation of residual stresses and the temperature history during the flame cutting process. In addition, an extensive series of flame cut samples was designed with the assistance of the model.

    AlkuperäiskieliEnglanti
    Sivut2891–2901
    JulkaisuMetallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
    Vuosikerta48
    Numero6
    Varhainen verkossa julkaisun päivämäärä18 syysk. 2017
    DOI - pysyväislinkit
    TilaJulkaistu - jouluk. 2017
    OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

    Julkaisufoorumi-taso

    • Jufo-taso 1

    !!ASJC Scopus subject areas

    • Yleinen tekniikka

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