Ceramic Roller
Quartz ceramics
Ceramic protect
Silicon carbide
Refractory insu
 
Tel:(86)533-5558118     
Fax:(86)533-5558336
Mobile: 15215336060
E-mail[email protected]
Address:cicun,zichuan district,
zibo city, shandong province,china.
 
catalog > High aluminum Through the tube




 

Application: Electric heating pipes in float glass line tin bath, Protective pipe using in solar 
glass production, heating pipe and lined pipe in the Electric furnace annealing furnance.

Material1. Corundum   2.High aluminum

Category1.Protection tube

          2.Insulating tube

          3.Through the tube

 

Material/

Parameter

AL2O3

Sio2

Fe2O3

Alkaline 

substances

Density

Hardness

Water 

absorption

Flexural 

strength

Corundum

99%

0.2%

0.1%

0.1%

3.9g/cm3

9M

0.1%

2000kg/cm2

Corundum

95%

0.5%

0.3%

1.5%

3.5g/cm3

8M

0.15%

1800kg/cm2

High aluminum

85%

12%

0.5%

2.5%

2.6g/cm3

7M

0.2%

1300kg/cm2

Air tightness: under in 1.3Kpa negative pressure, for 10 minutes, the pressure drop is less than 0.3 Kpa

Heat resistance:insert the tube into the furnace 20mm, heated to 1600  C  Insulate for 30 minutes, 
not bend, not soften.

Expansion coefficient:  corundum 810-8    high aluminum 5  10-8

Operating temperature: corundum long-term 1600 , short-term 1800 
                       High aluminum  long-term 1300   short-term  1600 

Heat stability: corundum 1300  C to room temperature three times without cracking.

                    High aluminum 1300  C to room temperature three times without cracking.

All rights reserved, zibo HuaYan industrial ceramics Co., LTD.    Address:cicun,zichuan district, zibo city, shandong province,china.
Phone: 0533-5558118   Technical supportOK

ʷ