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Behaviour of surface defects in wire rod rolling
Örebro University, Department of Technology.
2006 (English)In: Steel Research International, ISSN 1611-3683, E-ISSN 1869-344X, Vol. 77, no 6, p. 439-444Article in journal (Refereed) Published
Abstract [en]

Defects are often present in rolled products, such as wire rod. The market demand for wire rod without any defects has increased. In the final wire rod products, defects originating from steel making, casting, pre-rolling of billets and during wire rod rolling can appear. In this work, artificial V-shaped longitudinal surface cracks have been analysed experimentally and by means of FEM. The results indicate that the experiments and FEM calculations show the same tendency except in two cases, where instability due to fairly "round" false round bars disturbed the experiment. FE studies in combination with practical experiments are necessary in order to understand the behaviour of the material flows in the groove and to explain whether the crack will open up as a V-shape or if it will be closed as an I-shape.

Place, publisher, year, edition, pages
2006. Vol. 77, no 6, p. 439-444
Keyword [en]
Rolling, Steelmaking, Cracks, Surface properties, Finite element method, Artificial surface cracks, Wire rod, Working range, Roll pass design, FE-analysis
National Category
Mechanical Engineering
Research subject
Mechanical Engineering
Identifiers
URN: urn:nbn:se:oru:diva-4429OAI: oai:DiVA.org:oru-4429DiVA, id: diva2:138728
Available from: 2007-07-12 Created: 2007-07-12 Last updated: 2017-12-14Bibliographically approved

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Överstam, Henrik

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