Modelling Central Consolidation during Hot Rolling of Cast Products

Abstract:

Extending the range of finished product sizes from a given ingot or concast bloom or billet section is often limited by the minimum area reduction required to ensure effective central consolidation and final mechanical properties. Predicting effective consolidation or level of remnant porosity for a range of steel grade, billet size, pass schedule/roll design and thermo-mechanical conditions has always been an important issue on plant, much more lately in view of recent trends for larger ingots and development of combined forging/rolling strategies. This paper will focus primarily on a fast analytical technique based on roll gap shape and consolidation factors obtained from Finite Element (FEM) Models. New developments based on FEM submodelling are presented briefly. Healing capabilities based on diffusion bonding can be obtained from [1-3].

• Periodical: Key Engineering Materials (Volume 716)
• Pages: 728-735
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.716.728
• Online since: October 2016
• Authors: Didier Farrugia*
• Keywords: Rolling , Analytical Modelling, As-Cast Bloom, Cast Ingot, Consolidation, Finite Element Modelling (FEM), Healing, Porosity, Soundness

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