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Sell Hi temperature industrial alumina ceramic pipe

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Product/Service: Hi temperature industrial alumina ceramic pipe  
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Price Requirement:   Inquiry
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Address: China
Validity Period: Longterm Validity
Last Update: 2014-05-22
Browse: 948
Basic Info of Company
 
 
Detailed Description

Hi temperature industrial alumina ceramic pipe
Material:Al2O3 ceramic
Working temperature:1600C.
Good chemical resistant

Hi temperature industrial alumina ceramic pipe

2011-03-09_142641__12011-03-29_120536__1 

Mainly Usage:

1. Heat treatment furnace and toughened furnace

2. Inner liner tube and heating tube in electric furnace

Features: 

1.Great mechanical strength

2.High softening temperature

3.Good resistance to thermal impact

4.Small thermal expansion coefficient 

5.Good chill and abrupt heat properties

6. Resistance to acid and alkali corrosion

Chemical competent

Al2O3

≥99.5%

SiO2

<0.2%

Fe2O3

<0.1%

Alkaline matter

<0.1%

Density

3.9 g/cm3

Hardness

9 M

Water absorption

<0.1%

Ruptures trength

>2000kg/cm2

Gas tightness

Kept for ten minutes at negative pressure of 1.3Kpa. 

The pressure drop is less than 0.3Kpa.

Thermal tolerance

Insert the pipe into the furnace at a depth of 20mm. 

Heat to 1600ºC and maintain for 30 minutes.

Alkali tolerance

In the Na2CO3 solution of 2N concentration, boil for 

15 hours with the weight loss not greater than 20mg/dm2.

Volume resistance

>9*10(5) Ω·cm/1600ºC

Breakdown voltage

20kv/cm

Expansion coefficient

8*10(-8)

Temperature for use

Long-term: 1600ºC  Short-term: 1800ºC

Chill and abrupt heat

1500ºC~room temperature not cracking thrice.

Material

65 Al2o3

75 Al2o3

80 Al2o3

85 Al2o3

90 Al2o3

95 Al2o3

99 Al2o3

Al2o3

65%

75%

80%

85%

90%

93%

99.3%

Fe2o3

≤ 4

≤ 2

≤ 1.5

≤ 1.0

≤ 0.5

≤ 0.5

≤ 0.3

Desnsity: g / cm3

2.8

3.10

3.20

3.40

3.50

3.60

3.85

Vickers Hardness

7.5

≤ 7.8

≥ 8

≥ 8.6

≥ 8.8

9

9

Water Absorption:%

≤ 4

≤ 1

≤ 0.5

≤ 0.2

≤ 0.1

≤ 0.085

≤ 0.01

Refractoriness:°C

1300 °C

1400 °C

1450 °C

1580 °C

1600 °C

1650 °C

1800°C

Flexural Strength:Mpa

80

100

150

180

200

240

280

Wear Rate( at room

 temperature, erosion, 

100 grinding)%

≤ 5

≤ 4.5

≤ 3.5

≤ 3

≤ 2.5

≤ 1

≤ 0.5


 
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