Quick change submerged nozzles are used in shielded casting practice between tundish and mold, cooperating with stopper can control steel pouring speed, shield strand and adjust its casting direction. These products have good thermal shock stability, anti-erosion and high mechanical strength. The assorted slide plates for blowing argon gas have three kinds, that is, with a zirconia core, alumina-zirconia-carbon and zirconia-carbon, which can satisfy different steel kind and different service life requests.
Item |
Submerged nozzle |
Slide plate for blowing argon gas |
||
AL2O3(body) |
ZrO2-C(slag line) |
AL2O3-C |
AL2O3-ZrO2-C |
|
AL2O3% |
>45 |
|
>85 |
>80 |
C+SiC% |
>26 |
>15 |
>5 |
>5 |
ZrO2% |
|
>70 |
|
>5 |
A.P.(%) |
<18 |
<20 |
<8 |
<7 |
B.D.(g/cm3) |
>2.5 |
>3.20 |
>3.0 |
>3.1 |
C.S.(MPa) |
>20 |
>20 |
>80 |
>80 |
B.S.(MPa) |
>7.0 |
>7.0 |
>7.0 |
>10.0 |