The characteristics of ceramic roller for glass tempering furnace including:
1,Small thermal expansion coefficient, good thermal shock resistance, good volume stability,between 1000C and cold water cycle,the ceramic roller for glass tempering furnace can not be damaged;
2,Ceramic roller for glass tempering furnace have low thermal conductivity, almost not change under 1100C, insulation performance is good;
3,Under 1100C the intensity increased with the rise of temperature significantly,at room temperature to 1100C,ceramic roller for glass tempering furnace’intensity can be increased 33%,other oxide ceramics from room temperature to 1000C,it’s intensity reduces about 60%;
4,Ceramic roller for glass tempering furnace have good electrical insulation, room temperature resistivity is 1015 Ω.cm, dielectric constant and dielectric loss tangent with the temperature increasing,the change is small;
5,Ceramic roller for glass tempering furnace have high temperature stability,easy to make big and special products and has good machine workability;
6,Ceramic roller for glass tempering furnace have good chemical stability,except hydrofluoric acid and more than 300C hot concentrated phosphoric acid erosion to it the rest with hydrochloric acid, sulfuric acid, nitric acid have no effect on it. And Li, Na, K and other metallic melts and ceramic roller for glass tempering furnace almost had no reaction with it.
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