Community Research and Development Information Service - CORDIS


Final report on Contract No 7210-PA/012; 1 July 1997 to 31 December 2000

This collaborative project aimed at the development of new mould geometry for a better control of the dendritic structure of the initial frozen shell in the continuous casting of billets. The work carried out by Sidenor shows the influence of corner radius and face curvature in the billets' surface and subsurface defects and in the quality of the rolled bars. Experimental ingots were cast with different geometries for a first approximation, but no difference could be found. Finally, industrial trial heats showed an improvement in rolled bars rejection, but the degree of improvement did not justify the major investment needed to solve the operational problems involved. CSM made a model to have a complete description of the solidification of the steel inside the mould. Different simulations were made to study the thermomechanical behaviour of the solidified shell. The results revealed that the risk of off-corner cracks is lower in the case of billets with unusually large radii and concave faces. Due to problems with the manipulation of these billets, a new geometry with flat faces and large radii was simulated and it showed the lowest risk of cracks. Finally some simulations were made to identify the best mould taper conditions.

Additional information

Authors: SANTISTEBAN V, Sidenor I+D, Basauri (ES);LARAUDOGOITIA J J, Sidenor I+D, Basauri (ES);DE SANTIS M, CSM, Rome (IT);RIDOLFI M R, CSM, Rome (IT);GOTTI M A, CSM, Rome (IT)
Bibliographic Reference: EUR 20185 EN (2002), pp.82. Euro: 13.00
Availability: EUR-OP reference: KI-NA-20185-EN-S. Available from EUR-OP sales agents. URL:
ISBN: ISBN: 92-894-3199-7
Record Number: 200214594 / Last updated on: 2002-04-19
Original language: en
Available languages: en