ORBi: Pascon Frédéric - Modelling of semi-continuous casting of cupro-nickel alloys

Reference : Modelling of semi-continuous casting of cupro-nickel alloys


	Document type :	Scientific congresses and symposiums : Paper published in a book
	Discipline(s) :	Engineering, computing & technology : Civil engineering
	To cite this reference:	http://hdl.handle.net/2268/22998

Title :	Modelling of semi-continuous casting of cupro-nickel alloys
Language :	English
Author, co-author :	Pascon, Frédéric [Université de Liège - ULg > Département ArGEnCo > Département ArGEnCo >]
	Pecquet, Etienne [Université de Liège - ULg > Département Argenco : Secteur MS2F > Mécanique des solides >]
	Zhang, Lihong [Université de Liège - ULg > Département ArGEnCo > Département ArGEnCo >]
	Habraken, Anne [Université de Liège - ULg > Département ArGEnCo > Département ArGEnCo >]
Publication date :	2005
Main document title :	Proceedings of the International Conference on Computational Methods for Coupled Problems in Science and Engineering
Editor :	Papadrakakis, M.
	Onate, E.
	Schrefler, B.
Audience :	International
Event name :	International Conference on Computational Methods for Coupled Problems in Science and Engineering (CIMNE 2005)
Event date :	18 octobre 2005
Event place (city) :	Barcelone
Event country :	Espagne
Keywords :	[en] continuous casting ; cupro-nickel ; copper
	[fr] nickel ; experimental characterization ; finite element method
Abstract :	[en] This research developed at University of Liege aims to optimize the complete semi-continuous casting process at LBP Company, a producer of copper-nickel alloys (or cupro-nickels). The process consists in vertical casting of 7m long ingots. Some problems recurrently occur during casting process: formation of oscillations (wave length of about 500 mm), unsuitable concave cross-sections or internal cracks. In order to reduce the occurrence of such defects and to better understand their formation, we have been asked to develop a finite element model. The research focuses on two main topics: identification of material properties through laboratory tests and literature survey and the development of the numerical tool. The laboratory tests provide thermal and mechanical properties of the ingot and the mould, as well as heat transfer coefficients between the ingot and its surroundings (mould, air and water). These parameters are required for the numerical simulations of the process. In the second part of the research, numerical calculations have been performed using finite element method. Two types of 2D models have already been studied: horizontal slice and vertical slice. This first choice has been guided by the high coupling between thermal and mechanical aspects of the problem, leading to highly complex systems of equations and subsequent long CPU times. However, due to the limitations of such 2D models, a 3D formulation has then been considered and it is still in progress.
Permalink :	http://hdl.handle.net/2268/22998

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Open access	2005_Modelling of semi-continuous casting of cupro-nickel alloys.pdf	(c) CIMNE, Barcelona, 2005	Publisher postprint	941.03 kB	View/Open

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