Study of the feeding system for the roll casting of narrow strips
Project ID: 7210-CA/323Funded under: ECSC-STEELRES 7C
The aim of this work was the analysis of the influence of feeding system geometry in strip casting. The vertical twin-roll casting is characterised by turbulent flows and by quite severe ferrostatic pressure at the kissing point; this can lead to break-outs. To study the strip casting without these difficulties, a single roll caster has been built (hot model). A single roll and double roll tin caster (warm model) and a water melt over flow single roll caster (out of contract) have also been built. The water model shows several hydrodynamic regimes which depend on the casting speed and the liquid level. The warm model shows that the temperature of the feeding system plays an important role. An upper rolling roll, just after solidification, whose aim is to reduce surface defects, seems to give poor results. An upper solidificating roll, which forms an upper solid shell, can give good strip but it is necessary to control the position of the shell junction. The hot model confirms the importance of the temperature of the feeding system. Characterisation and modelling of the temperature evolution of the strip and of the roll shows that mechanical properties are slightly lower than in twin-roll casting.
Bibliographic Reference: EUR 13624 FR (1991) 46 pp., FS, ECU 6.25
ISBN: ISBN 92-826-2930-9
Record Number: 199111439 / Last updated on: 1994-12-02
Original language: fr
Available languages: fr