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The influence of bearing geometry on the residual stress state in cold drawn wire, analysed by the FEM
Örebro University, Department of Technology. (Maskin)
2006 (English)In: Journal of Materials Processing Technology, ISSN 0924-0136, E-ISSN 1873-4774, Vol. 171, no 3, p. 446-450Article in journal (Refereed) Published
Abstract [en]

Finite element simulations have been performed in order to study the influence of bearing geometry on the residual stress-state in cold drawn wires. Experiments in full industrial scale have been performed in order to verify the FEM results. The residual stresses were measured with X-ray diffraction in both the axial and tangential direction. The material used was a high carbon steel for roller bearings, 100Cr6. It was found that the geometry of the bearing has a large influence of the residual stress-state. When the bearing is somewhat tapered, a gap in the beginning of the bearing is formed. This "double contact" reduces the axial and tangential residual stress to minimum or even to a compressive state. A cylindrical bearing gave no contact in the bearing at all due to elastic deformation. This resulted in a large axial and tangential residual stress. It was shown that even a small divergence from the desired bearing geometry due to the grinding of the die could affect the residual stress immensely.

Place, publisher, year, edition, pages
2006. Vol. 171, no 3, p. 446-450
Keywords [en]
high carbon steels, bearing steelsb, chromium steels, roller bearings, finite element method, residual stress
National Category
Engineering and Technology
Research subject
Mechanical Engineering
Identifiers
URN: urn:nbn:se:oru:diva-3941DOI: 10.1016/j.jmatprotec.2005.08.012OAI: oai:DiVA.org:oru-3941DiVA, id: diva2:138240
Available from: 2007-05-10 Created: 2007-05-10 Last updated: 2017-12-14Bibliographically approved

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Överstam, Henrik

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