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

    Research output: Contribution to journalArticleScientificpeer-review

    5 Citations (Scopus)
    14 Downloads (Pure)

    Abstract

    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.

    Original languageEnglish
    Pages (from-to)2891–2901
    JournalMetallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science
    Volume48
    Issue number6
    Early online date18 Sep 2017
    DOIs
    Publication statusPublished - Dec 2017
    Publication typeA1 Journal article-refereed

    Publication forum classification

    • Publication forum level 1

    ASJC Scopus subject areas

    • Engineering(all)

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