FUSED SILICA HEARTH ROLL

silica hearth roll 1.Very low thermal expansion coefficient, 2.strong thermal shock stability,

our company can product high quality silica tempering roller/hearth roll

high temperature ceramic rollers

1.      Very low thermal expansion coefficient, strong thermal shock stability, no deformation under    high temperature

2.     Raw material with high purity, excellent chemical and physical properties

3.      Precision processing technology, accurate size accuracy

4.     Reliable shaft head connection technology

indices	data
SiO2 (wt %)	≥99.7
Volume density(g/cm3)	>1.95
Show porosity (%)	7-11
Compressive strength(Mpa)	≥60
High-temperature anti-flexural strength (Mpa)	≥30
Thermal expansion coefficient (×10-6/°C)	<0.6
Surface roughness Ra(u m)	≤1.6
Diameter tolerance (mm)	±0.05
Radial beat (mm)	≤0.10

FUSED SILICA HEARTH ROLL