Alumina ceramic mullite roller

  

Alumina ceramic mullite roller OD 0.7mm-150mm Length 3900mm

Alumina ceramic rollers

Ceramic alumina tube , alumina content 60%- 99.7%,White or Ivory ,Wear-resisting and acidproof alkali corrosion , High temperature (1600-1700 degree centigrade). Good chemical stability,high insulation, strong adsorption capacity, is a nice electrical insulation and wear-resisting material.

Application : Widely used in lamps and lanterns, electronic appliances, blast nozzle, auto parts, wear-resistant parts of insulating material, burner electrodes
flame sensors & probes
ignition burner probes
flame failure electrodes & probes
ionisation probes
flame rods
ignition burner probes
flare probes
furnace spark ignitors
kiln ignitors
furnace flame probes
pottery spark plugs
flame sensing detection electrodes
flame sensing detection probes
spark ignitors and flame ignitors
etc.

Product Inf.:

Al2O3 content 

%

70-75

85

95

99.7

Density 

(g/cm3)

3.0

3.4

3.7

3.9

Bending Strength

(Mpa)

85N/MM2

300

364

450

Hot coefficient of expansion

 (20O°C-80O°C) 

6

7

7.6

8

Thermal Conductivity 

(W/(m.R))

17

18

20

35

Dielectric Strength 

(kv/mm)

9

10

11

12

Working Temperature 

 (Long time use)

1300

1400

1600

1750

Water Absorption 

%

5

<0.2

<0.2

<0.1-0.2

Specification:

Dimension Outer dia. mm Inner dia.mm Length mm Remark
Item 
Thermocouple protection tube 7-120 1-110 10-2500

If you need others,we can

customize for you.

Insulated tube Single hole 2-120 1-110 10-3900
(inner core) Double holes 1-10 0.4-2 10-2500
  Four holes 2-10 0.5-2 10-2500

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