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http://dx.doi.org/10.5762/KAIS.2015.16.2.952

Development of the hot ring rolling processes for multilayered ring parts with a large outer diameter  

Kim, Kyung-Ryool (Graduate School, Kyungpook National University(Hanho))
Kim, Young-Suk (School of Mechanical Engineering, Kyungpook National University)
Publication Information
Journal of the Korea Academia-Industrial cooperation Society / v.16, no.2, 2015 , pp. 952-962 More about this Journal
Abstract
In this study, multilayered rings with a large outer diameter have been developed using a hot ring rolling process. The ring rolling process has been analyzed by rigid plastic finite element analyses (FEA) using the AFDEX2D and AFDEX3D/HEXA/RING simulators, where the finite element meshes received severe plastic deformation are remeshed into a fine mesh-size using a dual-mesh system. According to the simulated results, the design variables of the multilayered rings were determined and real tests were conducted to check the validity of the simulation results. By adopting the hot ring rolling process, the input weight of raw materials was reduced by 40% against the conventional hot forging process and that the recovery rate was increased by 24%. The measurement of the averaged roundness was satisfied within 0.5 mm for both the inner and outer diameters. Moreover, the hot ring rolling processes yielded 1.49 Cpk for the outer-diameter and 0.84 Cpk 0.84 for the inner-diameter.
Keywords
AFDEX2D; Multilayered Ring; Process Capability; Rigid Plastic Finite Element Analysis; Ring Rolling;
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Times Cited By KSCI : 5  (Citation Analysis)
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