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The Effects of Forming Parameters on Conical Ring Rolling Process

The plastic penetration condition and biting-in condition of a radial conical ring rolling process with a closed die structure on the top and bottom of driven roll, simplified as RCRRCDS, were established. The reasonable value range of mandrel feed rate in rolling process was deduced. A coupled ther...

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Detalles Bibliográficos
Autores principales: Meng, Wen, Zhao, Guoqun, Guan, Yanjin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi Publishing Corporation 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4150487/
https://www.ncbi.nlm.nih.gov/pubmed/25202716
http://dx.doi.org/10.1155/2014/235656
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author Meng, Wen
Zhao, Guoqun
Guan, Yanjin
author_facet Meng, Wen
Zhao, Guoqun
Guan, Yanjin
author_sort Meng, Wen
collection PubMed
description The plastic penetration condition and biting-in condition of a radial conical ring rolling process with a closed die structure on the top and bottom of driven roll, simplified as RCRRCDS, were established. The reasonable value range of mandrel feed rate in rolling process was deduced. A coupled thermomechanical 3D FE model of RCRRCDS process was established. The changing laws of equivalent plastic strain (PEEQ) and temperature distributions with rolling time were investigated. The effects of ring's outer radius growth rate and rolls sizes on the uniformities of PEEQ and temperature distributions, average rolling force, and average rolling moment were studied. The results indicate that the PEEQ at the inner layer and outer layer of rolled ring are larger than that at the middle layer of ring; the temperatures at the “obtuse angle zone” of ring's cross-section are higher than those at “acute angle zone”; the temperature at the central part of ring is higher than that at the middle part of ring's outer surfaces. As the ring's outer radius growth rate increases at its reasonable value ranges, the uniformities of PEEQ and temperature distributions increase. Finally, the optimal values of the ring's outer radius growth rate and rolls sizes were obtained.
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spelling pubmed-41504872014-09-08 The Effects of Forming Parameters on Conical Ring Rolling Process Meng, Wen Zhao, Guoqun Guan, Yanjin ScientificWorldJournal Research Article The plastic penetration condition and biting-in condition of a radial conical ring rolling process with a closed die structure on the top and bottom of driven roll, simplified as RCRRCDS, were established. The reasonable value range of mandrel feed rate in rolling process was deduced. A coupled thermomechanical 3D FE model of RCRRCDS process was established. The changing laws of equivalent plastic strain (PEEQ) and temperature distributions with rolling time were investigated. The effects of ring's outer radius growth rate and rolls sizes on the uniformities of PEEQ and temperature distributions, average rolling force, and average rolling moment were studied. The results indicate that the PEEQ at the inner layer and outer layer of rolled ring are larger than that at the middle layer of ring; the temperatures at the “obtuse angle zone” of ring's cross-section are higher than those at “acute angle zone”; the temperature at the central part of ring is higher than that at the middle part of ring's outer surfaces. As the ring's outer radius growth rate increases at its reasonable value ranges, the uniformities of PEEQ and temperature distributions increase. Finally, the optimal values of the ring's outer radius growth rate and rolls sizes were obtained. Hindawi Publishing Corporation 2014 2014-08-17 /pmc/articles/PMC4150487/ /pubmed/25202716 http://dx.doi.org/10.1155/2014/235656 Text en Copyright © 2014 Wen Meng et al. https://creativecommons.org/licenses/by/3.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Meng, Wen
Zhao, Guoqun
Guan, Yanjin
The Effects of Forming Parameters on Conical Ring Rolling Process
title The Effects of Forming Parameters on Conical Ring Rolling Process
title_full The Effects of Forming Parameters on Conical Ring Rolling Process
title_fullStr The Effects of Forming Parameters on Conical Ring Rolling Process
title_full_unstemmed The Effects of Forming Parameters on Conical Ring Rolling Process
title_short The Effects of Forming Parameters on Conical Ring Rolling Process
title_sort effects of forming parameters on conical ring rolling process
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4150487/
https://www.ncbi.nlm.nih.gov/pubmed/25202716
http://dx.doi.org/10.1155/2014/235656
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