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HomeUsing asymmetrical rolling for increased production and improved material properties
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In this project, hot asymmetric rolling with different asymmetries has been studied. The results show that asymmetric rolling is efficient for thinner dimensions, particularly when using high-speed differences between the work rolls. A decrease in roll force and torque can be obtained. Curvature in asymmetrical passes can be avoided by rolling at the turning point between the ‘ski-up/ski-down’ conditions or by letting the plate bend into the roller table. An interesting result is that lubrication could be used to change the bending direction. Single drive often gives gripping problems. Tests of rolling with different work roll diameters using single drive or twin drives showed that the effect of the speed on the torque has a larger impact than the effect of the diameter. Interesting texture analysis was performed that demonstrated that the texture from a dual-drive asymmetrical rolling trials showed shearing up to the centre of the sample : this shearing was superior to the shearing introduced by any single-drive configuration. Asymmetrical rolling gives a small increase in abrasive wear and has a slightly negative effect on the protective oxide formation. Contact force measurements show that a contact pressure peak is less pronounced for a non-driven roll. Small variations in roll size and roll speeds will not give the benefits of asymmetric rolling.
- Publicado:
- Autor(es) colectivo(s): Dirección General de Investigación e Innovación (Comisión Europea)
- Autores personales: Nilsson, A ; Putz, P.D ; iSalvator, I
- Тemas: Investigación y desarrollo industriales
- Tema: acero , industria siderúrgica , investigación industrial
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| ISSN 1831-9424 | ISBN 978-92-79-22203-0 | DOI 10.2777/14782 | Número de catálogo KI-NA-25061-EN-N |
- Released on EU publications website:
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