Brief introduction: Aluminum silicate plug is sometimes called asbestos plug head and heat preservation cap for outlet of aluminium-copper-zinc smelting furnace. It is mainly made of high-grade aluminium silicate ceramic fibers and other formulas by vacuum moulding, with tough texture, high compressive strength, low heat storage and less heat loss. It is suitable for heat insulation and sealing at the outlet of centralized smelting furnace, refining furnace, static furnace and electric furnace. It makes the casting process of aluminium-copper-zinc and aluminium-copper-zinc alloy more convenient, safer and reliable.
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.
External dimension of plug sleeve 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.