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Effect of Differential Speed Rotation Technology on the Forming Uniformity in Flexible Rolling Process

Dieless Forming Technology Center, Jilin University, Changchun 130025, China
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Materials 2018, 11(10), 1906; https://doi.org/10.3390/ma11101906
Received: 16 August 2018 / Revised: 28 September 2018 / Accepted: 29 September 2018 / Published: 8 October 2018
(This article belongs to the Section Manufacturing Processes and Systems)
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Abstract

As the local forming non-uniform of the formed curved surface part with larger bending deformation is the one of common defects, the utilization ratio of metal plate greatly reduces due to this defect, and cost of production is also increasing. In this paper, the differential speed rotation technology of flexible rolling process was proposed firstly to solve this forming defect. The finite element model was established, the reason of the local forming non-uniform was discussed; the effect of differential speed rotation technology on the forming uniform was studied. The results show that: Flexible rolling is a process based on thickness reduction, in this forming process, the thickness reduces sharply near the back end of metal plate, the local forming non-uniform of formed curved surface part is caused during this process; the differential speed rotation technology is applied in flexible rolling, with increasing rotation speed difference between upper and lower roll set, the forming uniformity of the formed curved surface part is greatly improved. The results of numerical simulation are in agreement with the result of forming experiments. View Full-Text
Keywords: flexible rolling; convex surface part; numerical simulation; differential speed rotation; forming uniformity flexible rolling; convex surface part; numerical simulation; differential speed rotation; forming uniformity
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Li, Y.; Li, M.; Liu, K.; Li, Z. Effect of Differential Speed Rotation Technology on the Forming Uniformity in Flexible Rolling Process. Materials 2018, 11, 1906.

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