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Product Name:Alumina Ceramic Furnace tube

Furnace tube

The purpose of corundum furnace tube is to line the various test electric furnaces, mainly to separate the heating element from the test substance, close the heating zone and place the test substance. The furnace tube has a wide range of applications, such as wire drawing of tungsten, molybdenum, tantalum and rare metals, powder metallurgy sintering, gas-filled high-temperature electric furnace, high-temperature test and analysis equipment in various industries, etc.

Application equipment: vacuum atmosphere tube resistance furnace, energy-saving box electric furnace, high temperature annealing muffle furnace, precision tube furnace, environmental protection and energy-saving new tube electric furnace, vacuum atmosphere tube furnace; vertical furnace, cylindrical furnace, large square furnace (Tubular furnaces are divided by furnace type); chemical reaction furnaces, liquid heating furnaces, gas heating furnaces, and furnaces for heating mixed-phase flow (divided by use) 

Size :

¢40*30*L200/300/400 mm

60*50*L300/400 mm

80*70*L300/400/600 mm

100*90*L300/400/600 mm

50*40*L1200/1500 mm

60*50*L1200/1500 mm

80*70*L1200/1500 mm

100*90*L1200/1500 mm

Customized Size Accepted

Physical Property:

  Material

            Alumina Content

Characteristic

Unit

AL99.7

AL99.5

AL99

AL95

Content


99.7%

99.5%

99%

95%

Color


Ivory white

Ivory white

Ivory white

white

Density

g/cm

3.94

3.9

3.8

3.75

Straightness


1%

1%

1%

1%

Hardness

Mohs hardness

9

9

9

8.8

Water absorption


≦0.2

≦0.2

≦0.2

≦0.2

Flexural strength

(20℃) Mpa

375

370

340

304

Compressive strength

(20℃) Mpa

2300

2300

2210

1910

Thermal expansion coefficient

10/℃

7.6

7.6

7.6

7.6

Dielectric strength

AC.kv/mn

10

10

10

10

Dielectric loss

<0.0001

<0.0001

0.0006

0.0004

0.001

Volume resistivity

ΩNaN3

>1014 2*1012

>1014 2*1012

>1014 4*1011

>1014 2*1011

Dielectric constant

25℃@1HM

9.8

9.7

9.5

9.2

Thermal conductivity

W/m.k

35

35

34

20

Long-term use temperature

1700

1650

1600

1400

 

Precautions for installation and use:


1. Packing method: wooden box, carton

2. This product is fragile, please handle it gently during loading, unloading, handling, assembly and cleaning to avoid bumping;

3. It must be dried before use, preheating 50 ℃ -80 ℃, preheating time is not less than 5 hours, otherwise it is easy to burst.

4. Due to careless transportation, this product may have cracks. Please check carefully after receiving the goods. The cracks are picked out in time and can no longer be used. (The way to check the cracks is to observe the surface with the naked eye first, and then use a metal object Knock on the surface and make a crisp metal sound without cracking)



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