1. Block brick
The performance of the sliding spout seat brick and the steel bucket seat brick are roughly the same, but in order to reduce the steel condensation at the upper spout, the upper opening of the seat brick is deeper and larger than the ordinary steel bucket seat brick.
2. Water supply port
The upper spout brick is installed directly in the seat brick and cannot be replaced like the skateboard brick. Therefore, its service life is required to be longer than the skateboard brick and synchronized with the seat brick. Usually made of corundum or alkaline refractory materials with high corrosion resistance. In order to solve the problem of clogging of the nozzle when pouring steel containing AL and Ti, in addition to improving the material, the nozzle can be made into a blowing nozzle. Inert gas is blown from the inner wall of the nozzle to stir the molten steel and form an air film on the inner wall of the nozzle. , to prevent the water outlet from being blocked due to the precipitation of oxides in the molten steel and adhering to the wall of the outlet.
3. Skateboard bricks
The skateboard brick is the most critical refractory component in the sliding nozzle. It is a key part that determines the function of the sliding nozzle. The service life of the skateboard brick is closely related to the material used.
4. Drainage outlet
The nozzle brick is connected to the lower plate and moves together with the lower slide plate. The function of the nozzle brick is to rectify the scattered steel flow through the throttling operation of the slide plate, and to control the pouring speed by selecting the nozzle aperture. The nozzle brick is subject to the rapid heating of molten steel. Wear and slag erosion.
5. Skateboard breathable plug
In order to prevent the upper nozzle of the sliding nozzle from being blocked by solidified steel when pouring, a breathable plug is installed on the lower plate to prevent the molten steel from freezing.
6. Sliding nozzle filler
In order to prevent the sliding nozzle from solidifying during pouring, in addition to installing a breathable plug, granular refractory materials suitable for the type of steel to be poured and the operating conditions are also used as fillers for the upper nozzle to facilitate smooth pouring.
