| 摘要 |
PURPOSE:To provide a titled casting device which improves the surface quality of a billet by forming the surfaces of cooled casting molds facing each other and moving in the same direction to the rough surfaces having adequate frictional resistance force thereby preventing the cracking of the billet surface occuring in the solidified shells to be formed at the top end face of a pouring nozzle. CONSTITUTION:The block surfaces 1 of the cooled casting molds or the surfaces 6 of the cooling rolls facing each other and moving in the same direction are mde into the rough surfaces 20, 21 havig adequate frictional force. The tensile cracking of the shells 9, 12 as a result of the solidification of the shells at the triple points A of the solidified shells 11, 22 formed at the top end face 13a of the pouring nozzle or the top end face 7a of a pouring flask 7 is prevented by the frictional force of the surfaces 20, 21. The billet having the crackless satisfactory surface is obtd. and the load of the tensile force by pinch rolls is reduced, by which the construction of the pinch rollers is made simple. |
