High Temperature Ceramic Rollers For Kiln

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Product Description:

Specifications

1. High temperature
2. Good insulation
3. High strength
4. Precision Process

1) Materials: 50% -99.98% alumina oxide content
2) Application: Used for all kinds of electric heating equipment and electric
Equipment, and textile machinery
3) Good smooth and high strength
4) A variety of specifications available


Features:
1. High Mechanical Strength
2. High Thermal Conductivity
3. High Spalling Resistance
4. High Softening Temperature
5. Excellent Insulativity
6. Etching Resistance

Application:

Temperature measuring meters
Protection and insulation for thermocouples and thermometers
Furnace tube for resistance furnaces, heat treatment furnaces
Chemical analysis for steel and iron
Various insulationg parts for high temperature resistance and etching resistance

Structure Model:
Round and oval
Mono hole/single bore, double hole/twin bore and multi hole/multi bore
Threaded
Rhombohedral

High Purity Alumina Tubes:
1. Extreme high temperature stability under reducing, inert and high vacuum condition under high temperature up to 1800C.
2. Extreme wear and abrasion resistance.
3. Chemical corrosion resistance under high temperature.
4. High dielectric properties.
5. Gas tight for many applications to provide protective atmospheres or high vacuum at high temperature to eliminate contamination or impurity.

Specification:

Chemical competent

Al2O3

≥85%

SiO2

<12%

Fe2O3

<0.5%

Alkaline matter

<2.5%

Density

2.6 g/cm3

Hardness

7 M

Water absorption

<0.2%

Rupture  strength

>1300kg/cm2

Gas tightness

Kept for ten minutes at negative pressure of 1.3Kpa. The pressure drop is less than 0.3Kpa.

Heat 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

>2*10(5) Ω·cm/1300ºC

Breakdown voltage

18kv/cm

Expansion coefficient

5*10(-8)

Temperature for use

Long-term: 1400ºC  Short-term: 1600ºC











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Q:What are the high temperature resistant insulation materials at 400?
According to the general rules of equipment and piping insulation, heat insulation material is a material with a thermal conductivity of less than 0.14W/ (m*K) when the average temperature is equal to or less than 623K (350 degrees Celsius). Heat insulation material is usually light, porous, porous, small thermal conductivity characteristics. Generally used to prevent heat loss of equipment and pipes, or frozen (also known as general cold) and low temperature (also known as cryogenic) use, so in our country, insulation materials, also known as insulation or cold preservation materials. At the same time, because of the porous and fibrous structure of thermal insulation material, it has good sound absorption function, so it is also widely used in the construction industry.
Q:The ceiling of calcium silicate board and mineral wool board which is good
Mineral wool board ceiling is different than the calcium silicate board ceiling.Or with the calcium silicate board, mineral wool board first big thickness, increase the keel pressure, easy to cause the ceiling of the cave. Second, it is easy to produce some bug mineral wool board.
Q:What are the production methods of calcium silicate board material?
Calcium silicate (microporous calcium silicate) material and calcium silicate board are produced by static steaming method, dynamic hydrothermal synthesis method and two reaction method.
Q:Calcium silicate board for house ceiling, 6mm or 8mm?
Natural gypsum products and special fireproof material, the flame can produce endothermic reaction, at the same time, the release of water molecules to prevent the fire from spreading, and does not produce any toxic decomposition, corrosive and choking gas, will not produce any smoke or combustibles. Mineral wool board is mineral fiber cotton as raw material, the biggest characteristic is to have good sound absorption and heat insulation effect. Its surface has the effect of knurling and relief, such as star, caterpillar, cross flower, central flower, walnut line, stripe and so on. Mineral wool board can sound and heat insulation, fire prevention, any products do not contain asbestos, harmless to the human body, and has anti sag function.
Q:What heat preservation material is used for thermal insulation of steam pipe in power plant? How thick is the bag? Please advise!
Steam pipe in power plant thermal insulation rock wool board thickness, according to the temperature in the pipeline to choose, the higher the temperature insulation thickness is generally 80 to 150 mm.
Q:What's the use of low carbon steel insulated nail hooks for power plants?
The current power plant thermal insulation is mainly carried out by use of various types of insulation materials, thermal insulation materials commonly used include calcium silicate products, pipes, rock and aluminum silicate fiber products, due to their different properties are applicable to different environments. The equipment with temperature at 300-600 DEG C often adopts aluminium silicate products and calcium silicate products to compound heat preservation. While the temperature is less than 300 degrees, the mineral wool products are usually used for thermal insulation.
Q:What is a building energy-saving materials?
Heat insulation materials and insulation materials collectively referred to as thermal insulation materials.The commonly used thermal insulation material: mineral wool, rock wool, glass wool (in rock, slag as the main raw material, by high temperature melting, made by centrifugal methods such as cotton and thermosetting resin binder insulation products. ) foam plastics and porous polymers, expanded perlite and their products, calcium silicate insulation products, all kinds of composite insulation materials.
Q:What is the best price for the use of calcium silicate ceiling?
Neither calcium silicate nor silicate boards are afraid of water because they are mixtures of gypsum and fiber.
Q:Why is calcium silicate board unsuitable for use in home improvement?
Calcium silicate board called gypsum composite board, is a kind of porous material, good sound and heat insulation, in indoor air moist circumstance can attract water molecules in air, air drying, and the release of water molecules, can adjust the indoor humidity, dry, increase comfort. It is super fire gypsum material, the flame can produce endothermic reaction, at the same time, the release of water molecules to prevent the fire from spreading, and does not produce any toxic decomposition, corrosive and choking gas, will not produce any smoke or combustibles.
Q:What is the main role of fly ash added in concrete products?
Fly ash can inhibit the bleeding of fresh concreteFly ash can fine crumbs compensation in fine aggregate shortage, interrupt continuous bleeding mortar channels, and fly ash as cement replacement materials in the same consistency will make use of concrete water quantity is reduced in different degree, thus adding fly ash is beneficial to prevent the fresh concrete the bleeding.

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