Silicon Carbide Stopper Brick
Silicon carbide stopper brick is used at the bottom of the stopper
rod. It’s tightly matched with nozzle brick.
When not in casting, it blocks the nozzle to ensure no leakage on
When casting, the silicon carbide stopper brick will be raised by
stopper rod, and the molten steel will be flow out from the between
the stopper brick and nozzle brick.
The outflow of liquid steel can be controlled by adjusting the
height of the stopper. Stopper brick and core rolled can be
fastened by screw thread or pin.
1. High-temperature resistance.
2. Good thermal shock resistance.
3. Good resistance to abrasion and corrosion.
4. Won't pollute the molten steel.
It is mainly used in precision casting.
Items Silicon Carbide Stopper Brick
Test Method Head (SC-30)
Quality -- Silicate Bonded Sic
Bulk Density g/cm3 KS L3114 2.30 ≤2.15
Apparent Porosity % KS L 3114 15 ≥18
Cold Crushing Strength Mpa KS L3115 45 ≤32
SiC % KS L3128 29 ≤26
Al2O3 % 43 ≤41