Zirconium Core
Zirconium Core
1. Introduction:
Zirconium core uses zirconia as the main raw material,
is widely used in billet continuous casting tundish.
2. Advantages:
Strong anti-corrosion, No obvious expansion,
Good resistance to rapid cooling and rapid heat,
No cracking phenomenon.
3. Technique Parameters
|
Item |
Core |
|||
|
X-1 |
X-2 |
X-3 |
X-4 |
|
|
Zr(hf)O2, %, ≥ |
75 |
93 |
93 |
94 |
|
Al2O3, %, ≥ |
--- |
--- |
--- |
--- |
|
Bulk Denisity, |
4.1 |
4.8 |
5.1 |
5.3 |
|
Apparent Porosity, |
22 |
18 |
12 |
8 |
|
Compressive |
20 |
80 |
120 |
140 |
|
Working Life, |
6 |
8 |
10 |
12 |
|
Hole enlargement rate, |
0.2 |
0.1 |
0.1 |
0.1 |
|
Thermal Shock Times > |
5 |
4 |
4 |
4 |
|
|
|
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