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Experimental and Numerical study of the Evolution of Artifical Inner Defects in Stainless Steel rolled in a Wire Rod Block.
National Post Gradual School in Metal Forming, Dalarna University.
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
(English)Manuscript (preprint) (Other academic)
National Category
Other Materials Engineering
URN: urn:nbn:se:kth:diva-25924OAI: diva2:360862
QC 20101105Available from: 2010-11-05 Created: 2010-11-05 Last updated: 2010-11-05Bibliographically approved
In thesis
1. Evolution of artificial defects during shape rolling
Open this publication in new window or tab >>Evolution of artificial defects during shape rolling
2007 (English)Licentiate thesis, comprehensive summary (Other scientific)
Abstract [en]

Very often defects are present in rolled products. For wire rods, defects are very deleterious since the wire rods are generally used directly in various applications. For this reason, the market nowadays requires wire rods to be completely defect-free. Any wire with defects must be rejected as scrap which is very costly for the production mill. Thus, it is very important to study the formation and evolution of defects during wire rod rolling in order to better understand and minimize the problem, at the same time improving quality of the wire rods and reducing production costs.

The present work is focused on the evolution of artificial defects during rolling. Longitudinal surface defects are studied during shape rolling of an AISI M2 high speed steel and a longitudinal central inner defect is studied in an AISI 304L austenitic stainless steel during ultra-high-speed wire rod rolling. Experimental studies are carried out by rolling short rods prepared with arteficial defects. The evolution of the defects is characterised and compared to numerical analyses. The comparison shows that surface defects generally reduce quicker in the experiments than predicted by the simulations whereas a good agreement is generally obtained for the central defect.

Place, publisher, year, edition, pages
Stockholm: KTH, 2007. v, 32 p.
shape rolling, wire rod rolling, artificial defects, defect evolution, surface cracks, porosity, FEM, high speed steel, stainless steel
National Category
Other Materials Engineering
urn:nbn:se:kth:diva-4350 (URN)978-91-7178-614-2 (ISBN)
2007-04-24, Konferensrummet, K408, KTH, Brinellvägen 23, Stockholm, 10:00
QC 20101105Available from: 2007-05-04 Created: 2007-05-04 Last updated: 2010-11-05Bibliographically approved

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Filipovic, MirjanaJonsson, Stefan
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