Fused Silica Ceramic Roller For Toughened Glass Furnace With Diameter 85 Mm

Fused silica rollers are key components of glass horizontal tempering furnace for glass support and transmission. The fused silica rollers have excellent features such as high density and strength, no deformation at high temperature, wear resistant, excellent thermal shock resistance, long service life etc. Smooth and fine surface, little T.I.R. and high processing precision assures with no harm to the glass surface. Special design and assembly to resolve the problem of end-caps loosing absolutely. The newest coating technology for rust prevention brings end-caps a perfect appearance and a high durability. Different specifications from ∮15*750mm to ∮305*7000mm are provided to meet the requirements of all kinds of tempering furnaces. Characteristics. Spec Unit Content SiO2 Wt% ≥99.5% Bulk density g/cm3 1.90-1.99 Apparent porosity % 7~11 compressive strength Mpa ≥60 bending strength Mpa ≥25 high temperature Bending strength Mpa ≥30 Thermal expansion ×10-6/℃ ≤0.6 Thermal conductivity w/m. ℃ 0.65 Cristobalite % ≤2 Surface roughness u m Ra≤2.0 Diameter tolerance mm ±0.05 Circular Runout mm ≤0.10