2014-Sustainable Industrial Processing Summit
SIPS 2014 Volume 7: Energy Production, Environmental & Multiscale
| Editors: | Kongoli F |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2014 |
| Pages: | 528 pages |
| ISBN: | 978-1-987820-09-6 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Thermal Shock Investigation of Steel Work Roll in Cold Rolling Process
Ali Akbar Mottahedi1;1IROST, Tehran, Iran (Islamic Republic of Iran);
Type of Paper: Regular
Id Paper: 396
Topic: 18
Abstract:
During the rolling process in the aluminum industry, the roll faces, once in a while, some thermal heating or stress. This phenomenon may occur due to some mechanical or technological problems or due to the effect of external materials on the rolling strip. Those can affect some metallurgical defect as phase transformation or mechanical defect such as crack initiation or even spelling on roll surface. These defects, if not properly addressed, can cause heavy damage to the roll and create losses in the rolling process. In such cases, the roll must be changed and the damaged area should be repaired in order to prepare the roll for subsequent work. The roll repairing process is done by heavy grinding that has high cost and also decreases the roll working campaign. So an analyses of the heat flux is important to determine the heat affected area in the cold work forged steel roll which is cause of many accidents. In this paper thermal shock effect on the roll is analyzed by computational mechanics by using ANSYS software and metallurgical evaluation using years of industrial strip rolling experience. The heat affected area that may have some metallurgical phase transformations is also investigated. As a result, the depth of phase transformation of the roll surface due to any thermal shock is investigated and analyzed by finite element method. The obtained results are very useful to rolling industries in order to predict the size and nature of grinding that should be carried out in affected rolls.