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ORGANIZER;CN=ESTAD 2023:mailto:info@metec-estad.com
LOCATION:Room 27
SUMMARY:From material requirements to the rolling schedule: Fast material-oriented roll pass design for long products with the open source framework PyRolL
DESCRIPTION:New groove pass series for long products must be developed by backward engineering starting with the necessary mechanical properties and geometry of the final shape, with a highly iterative manual effort and with numerous manual decisions. Usually, established groove sequences are adopted in this process with-out consideration of material requirements of the rolled materials and work roll limitations, while other groove shapes may provide better final results. In order to achieve precision in the material flow, time consuming FE-Methods are already being used in the reverse engineering. 
The aim of the presented fast approach is to obtain an optimal roll contour for simple irregular groove sequences using generalized, roll-technical justified and experimentally evaluated design criteria coupled with a fast 3D approach for stress state, material flow and fast approaches for the assessment of the elastic stress state resp. work safety of the rolls. By direct coupling the material flow calculation e.g. with fast microstructure models the microstructure development and the required end properties are integrated into the optimization process. Examples for selected steel grades will be discussed.
Parts of the calculation code shown and discussed are available via the open source project - PyRoll - which is continuously updated by the Center of Groove Pass Design of TU Bergakademie Freiberg and free available within the terms of the license [1, 2]. The Python-based framework package allows maxi-mum adaptability to own needs via a flexible plug-in system for own code additions.
[1]	https://github.com/pyroll-project
[2]	https://tu-freiberg.de/en/fakult5/imf/ikz

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