MODELLING OF METAL FLOW, THERMAL AND MICROSTRUCTURAL EVALUTIONS DURING MULTIPASS HOT BAR ROLLING | ||||
| ERJ. Engineering Research Journal | ||||
| Article 15, Volume 24, Issue 3, July 2001, Page 219-229 PDF (443.19 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/erjm.2001.71129 | ||||
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| Author | ||||
| M. Abo-Elkhier | ||||
| Department of Production Engineering and Mechanical Design, Faculty of Engineering, Menoufia University, Shebin El-kom, Egypt, 325 1 1 | ||||
| Abstract | ||||
| A three-dimensional finite element model for analysis of metal flow, thermal and microstructural evolutions during hot bar rolling is presented. The heat transfer coefficients at the bar surface are allowed to vary as it is assumed that the bar is either in the air or in contact with the rolls. The microstructural model includes the possibility of both dynamic and static recrystallizations and grain growth during interpass time. Hot rolling process of a square bar in square-diamond-square-square pass sequence is analyzed. Data of temperature, strain and strain-rate distributions are used to compute the microstructural evolution in each pass. The predictions of the model are validated by comparing the calculated results with experimental data available in the literature | ||||
| Keywords | ||||
| Finite element modelling; Hot bar rolling; Temperature distribution; Microstructural evolution; Numerical analysis | ||||
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