Vacuum formed cones are made from ceramic fiber, with smooth surface, precise dimensions and the right hardness for the application. It is widely used for insulation in aluminium smelting furnace, finery, static furnace and furnace outlet, making the aluminium and aluminium alloy casting process more convenient, more reliable and much safer.

Advantages:
1. Good thermal shock resistance.
2. Low thermal mass.
3. Non-wetting.
4. Low smoking.
5. Good insulating properties.
6. High strength.
7. Low thermal conductivity.
We can produce different sizes according to the customer's requirement.

Specification:

Classification Temp.		1260°C
Working Temp.		1100°C
Density kg/M3		260-400
Permanent Linear Shrinkage (%)		≤4% (1200°C*24hr)
Compress Strength (MPa)		≥0.5
Chemical	AL2O3	42
Components	AL2O3+SiO2	98
%	Fe2O3	0.5
Thermal Conductivity  W/(M.K)		0.16(at 600°C);0.23(at 800°C);0.33(at 1000°C)