Simulation of Unstable Strip Running on Hot Run-Out-Table

In the hot-rolling process, defects resulting from running instability when a thin strip runs on the Run-Out-Table (ROT) at high speed in the state of non-tension (head or tail of the strip) pose a chronic problem. As a measure to prevent unstable strip running, the maximum line speed has been limit...

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Bibliographic Details
Published in:ISIJ International 2019/03/15, Vol.59(3), pp.496-503
Main Authors: Aoe, Shinichiro, Ohara, Yuji, Miyake, Masaru, Kabeya, Kazuhisa
Format: Article
Language:English
Subjects:
buckling
hot strip rolling process
multi-body dynamics
numerical simulation
plastic bending
ROT
run-out-table
strip
unstable
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Summary:In the hot-rolling process, defects resulting from running instability when a thin strip runs on the Run-Out-Table (ROT) at high speed in the state of non-tension (head or tail of the strip) pose a chronic problem. As a measure to prevent unstable strip running, the maximum line speed has been limited. Consequently, this has also become an aggravating factor that impedes higher productivity. Although various methods to solve and improve this problem have been proposed from an early date, it has not been eradicated completely.In this paper, we propose a numerical simulation method to simulate the strip running phenomenon on the ROT. It was found that the numerical results correspond to the theoretical and experimental results. Use of the proposed method has reduced both the cost and time necessary to improve the unstable strip running phenomenon.
ISSN:0915-1559
1347-5460
DOI:10.2355/isijinternational.ISIJINT-2018-625