Vitreous Fused Silica Rollers for the Glass Industry

Vitreous fused silica rollers are used specially as transport rollers for tempering flat glass. This method has been used for many years in the manufacture of tempered safety flat glass. The product is used mainly as architectural glass, e.g. for shop-window glass, curtain walls, glass doors, etc. Tempered safety glass is also used in automotive industry.

Vitreous fused silica rollers are used in both conventional (glass) annealing furnaces and furnaces with reversible material flow from various furnace manufacturers and operators. HALDENWANGER vitreous fused silica rollers are in successful use throughout the world in the flat glass industry.

Flat glass vitreous silica rollers and rollers with metal end caps (inset).

Figure 1. Flat glass vitreous silica rollers and rollers with metal end caps (inset).

Physical Properties

Property

Units

Value

SiO2

%

99.6

Density

g/cm3

1.92-2.00

Flexural Strength

MPa 20°C

30-40

MPa 700°C

45-60

Young’s Modulus

GPa

30-40

Thermal Expansion

10-6 K-1

0.5-0.9

Water Absorption Capacity

%

4.5-6.0

Porosity

Vol.%

10-14

Average Pore Diameter

µm

≤0.4

Metal End Caps

HALDENWANGER can supply our vitreous fused silica rollers with fitted metal end-caps on request. The following illustrations show some designs that are used in the various types of furnaces in the glass industry.

This information has been sourced, reviewed and adapted from materials provided by Morgan Advanced Materials.

For more information on this source please visit Morgan Advanced Materials.

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