| 摘要 |
Provided is a preheating device for a nozzle for continuous casting capable of preventing damage to a metal can body or refractory materials around a gap of a door unit by preventing a separation of a burner frame to the outside from a gap between a cross section of the door unit and a contact surface, and preventing damage to the nozzle for continuous casting or a heat loss by regularly and effectively supplying heat to the nozzle for continuous casting. The preheating device (1) for the nozzle for continuous casting of the present invention, as the preheating device for the nozzle for continuous casting with a cylindrical unit (3) made with the refractory materials having the door unit (2) and capable of being opened and closed; comprises: protrusions (6, 7) on the cross sections of the refractory materials of the door unit (2) respectively; and recesses (10, 11) interlocked with the protrusions (6, 7) on a contact surfaces (8, 9) coming in contact with the cross sections of the refractory materials of the door unit respectively. |
