Introduction: The insulating riser is mainly made of high-grade aluminium silicate ceramic fibers and other formulations by vacuum forming. It has tough texture, high compressive strength, low heat storage and less heat loss. It is suitable for the insulating, insulating and sealing function of aluminium and aluminium alloys in sand-turning casting process, making the casting process of aluminium and aluminium alloys more convenient, safer and reliable.
Physicochemical indicators:
The color is white.
Composition Si02 63.3% AL203 36% Ti02 0.5% Fe203 0.1% other < 0.1%.
Density 0.30-0.35g/cm 3
Thermal Properties Heat Resistant Temperature 1200 C
Maximum service temperature 1100 C
Continuous use temperature 900 C
Heat conductivity 0.77W/m.k at 750 C
The permanent linear contraction is less than 0.6% after 24 hours at 780 C.
Exterior dimension insulating riser type length size (+2) thickness (+2)
Surface quality single defect area less than 25 mm2 concave and convex high and low points should not be higher than 2 external surface should not have greater damage and shortage, etc.