Mould for continuous casting of metals, particularly steel

Details Mould for continuous casting of metals, particularly steel Mould for continuous casting of metals, particularly steel

B - Operations, Transporting

22

D

B22D 11/04 (2006.01) B22D 11/041 (2006.01)

Patent

CA 2060604

In the case of moulds for continuous casting of polygonal billet cross-sections, more particularly with a square or hexagonal cross-section, the mould cavity (6) can have one shape at the pouring-in end (4) and a different shape at the billet outlet end (5). The aim, by controlled shaping of the billet cross-section inside the mould, is to improve the cooling of the crust of the billet, in order to improve the quality of the billet and also increase the speed of casting. To this end, it is proposed to provide a cross-sectional enlargement (7) in the form of a bulge (9) in each peripheral portion of the mould cavity (6), and the width (10) of the bulge (9) in the direction (11) of advance of the billet, at least along a part (12) of the length of the mould cavity (6), decreases in such a way that the billet cross-section changes shape in transit through the part length (12) of the mould cavity (6).

Les moules destinés au coulage continu de billettes de sections polygonales ou, plus particulièrement, de sections carrées ou hexagonales peuvent avoir des cavités de moule (6) ayant une forme particulière à l'entrée de la cavité (4) et une forme différente à la sortie de la cavité (5). L'objectif, en formant la section de la billette de façon contrôlée à l'intérieur du moule, est d'accroître le refroidissement de la croûte de la billette afin d'améliorer la qualité de cette dernière et d'accroître la vitesse du moulage. La présente invention propose donc une cavité de moule (6) dont chaque partie périphérique comporte une section élargie (7) sous forme de renflement (9). La largeur (10) du renflement (9) dans la direction (11) de déplacement de la billette, au moins le long d'une partie (12) de la cavité du moule (6), décroît, de sorte que la section de la billette change de forme pendant son déplacement le long de cette partie (12) de la cavité du moule (6).

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