B - Operations – Transporting – 22 – D
Patent
B - Operations, Transporting
22
D
B22D 11/10 (2006.01) B22D 11/128 (2006.01) B22D 11/16 (2006.01) B22D 11/20 (2006.01) B21B 39/00 (2006.01)
Patent
CA 2058458
In a method and apparatus for withdrawing a strand in a horizontal continuous casting installation, the strand is withdrawn from a mold by a predetermined stroke and then retracted by a smaller stroke corresponding to shrinkage of the strand. This cycle of withdrawal and retraction is repeated intermittently. A strand withdrawing and retracting characteristic of a cycle is set in a control unit, and pinch rolls for withdrawing and retracting the strand are controlled based on the set characteristic. Actual withdrawing and retracting strokes of the strand are detected by a detecting device and the detected signal is compared with the set characteristic to produce an instruction signal which is fed back to the pinch rolls, so that the positional accuracy of the strand and the quality of the strand are improved.
Cette invention concerne une méthode et un extracteur de barre d'une installation de coulée continue horizontale, une longueur prédéterminée de ladite barre étant extraite du moule puis rétractée d'une longueur plus petite correspondant au retrait de la barre. Ce cycle est répété par intermittence. Les paramètres d'extraction et de rétraction d'un cycle sont entrés dans une unité de commande qui règle le fonctionnement des galets d'entraînement pour l'extraction et la rétraction appropriées. Les longueurs réelles d'extraction et de rétraction sont mesurées au moyen d'un détecteur dont le signal est comparé aux valeurs nominales de commande pour générer un signal de correction à être transmis aux galets pour améliorer la précision de la manoeuvre d'extraction-rétraction et la qualité de la barre obtenue.
Ao Yoji
Iida Toshio
Iwasaki Hiroshi
Kaneko Hideo
Kiyosuke Taizou
Kawasaki Jukogyo Kabushiki Kaisha
Riches Mckenzie & Herbert Llp
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