HIGH DENSITY CALCIUM SILICATE INSULATION BOARD
With density range 750--900kgs/m3 ,high density calcium silicate insulation board is developed for the non-ferrous industry used for feeding ,casting and molding of molten aluminum and other non-ferrous metals, also can be used for clamping fixture of glass industry . In addition to its insulation, its characteristic of non-stick aluminum exerts a large. Superior strength and good processability makes it the preferred material for precision CNC machined parts and complex components. There are two types, namely, glass fiber reinforced and carbon fiber reinforced.
YD-800 Glass-fibre Reinforced Calcium Silicate Insulation Board
A.Characteristic
Low thermal conductivity ,low heat losses at higher temperature
Non wetted by molten aluminium
Resistance to thermal shock
Excellent machining
Asbestos-free
B．Application
clamping fixture of car glass
Dip tubes
Pouring spouts
Hot-top rings
Stopper pins
End dams
Floats
Launders
C．Chemical Analysis
SiO2……………… 49---52%
CaO ……………… 39---42%
AlO3 …………… 0.4---0.5%
MgO……………… 0.5---0.7%
Fe2O3 …………… 0.3---0.4%
Na2-K2O ………… 0.9---0.1%
Lgnition loss(mainly H2O)………… 5--9%
D．Specification and technical data
Item | YD-800 |
Board Size（length*width*thickness） Tolerance | 1200*1200*(25—110)mm ±2 mm |
Bulk density Torlerance | 850-950 kg/m3 |
Temp. Limit | 1000℃-1100℃ |
Continuous Service Temp | 850 ℃ |
Flexural Strength | 6.5 MPa |
Comprssive Strength（break） 5% deformation | 15.5 MPa 12 MPa |
Coefficient of Thermal Expansion | 7*10¯6 /℃ |
Thermal Conductivity (W/M.K) | 100℃ 200℃ 300℃ 400℃ 0.113 0.120 0.121 0.125 |
Thermal shrinkage after 24 hours Linear % Thickness % | 650℃ 700℃ 750℃ 850℃ 1000℃ 0.15% 0.20% 0.24 0.25% 0.49% 0.25% 0.55% 0.70% 0.80% 0.98% |
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