Guide segment support system for continuous casting

Details Guide segment support system for continuous casting Guide segment support system for continuous casting

B - Operations, Transporting

22

D

B22D 11/124 (2006.01) B22D 11/128 (2006.01)

Patent

CA 2262677

An improved guide segment assembly for a continuous casting machine includes a support frame (12) and a guide segment (10) that includes a bottom segment portion (16) having a number of support rolls (18) for engaging a bottom surface of a continuously cast strand, and a top segment (20) having a number of guide rolls thereon for engaging a top surface of the strand. A force applicator (24) is provided for urging the top and bottom segment portions (20, 16) toward one another against mechanical stops (25) in order to provide support for the strand that is sufficient to counter ferrostatic pressure within the strand. A resilient mechanism (32) is positioned between the support frame (12) and the guide segment (10) for permitting limited movement between the support frame (12) and guide segment (10) during abnormal casting conditions. As a result of the resilient mechanism (32), both the support rolls (18) and the guide rolls will be amply protected against overload conditions during abnormal conditions such as cold withdrawals.

Cet ensemble segments de guidage amélioré, destiné à une machine de coulée continue, comprend un cadre de support (12) ainsi qu'un segment de guidage (10), lequel présente une portion inférieure (16) comportant un certain nombre de rouleaux porteurs (18) destinés à entrer en contact avec une surface inférieure d'une coulée continue, ainsi qu'une portion supérieure (20) sur laquelle on a placé un certain nombre de rouleaux de guidage destinés à entrer en contact avec une surface supérieure de la coulée. On a monté un dispositif d'application de forces (24) servant à pousser les portions supérieure et inférieure (20, 16) du segment l'une vers l'autre, contre des butées mécaniques (25), afin que ces portions constituent un support de la coulée qui soit suffisant pour contrer la pression ferrostatique régnant à l'intérieur de celle-ci. On a monté un mécanisme élastique (32) entre le cadre de support (12) et le segment de guidage (10), afin de permettre un déplacement limité entre ce cadre (12) et ce segment (10), dans des conditions anormales de coulée. Du fait de la présence de ce mécanisme élastique (32), les rouleaux de support (18) et les rouleaux de guidage sont amplement protégés contre toute surcharge pouvant se produire dans des conditions anormales, telles que des retraits à froid de la coulée.

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