High Temperature Ceramic Rollers For Kiln

High Temperature Ceramic Rollers For Kiln System 1

High Temperature Ceramic Rollers For Kiln

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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

High Temperature Ceramic Rollers For Kiln

Q:How to make building glue?: A building adhesive consisting of 28-50wt% sodium silicate aqueous solution, 34-53wt% quartz sand, and 8-35wt% magnesium silicate. The product of the invention can be used for the bonding of ceramic tile, floor tile, marble, wood and glass in indoor and outdoor decoration of buildings. It can be used as a substitute for cement in the field of tiling. The product of the invention is environment-friendly products without pollution when being produced and used. The utility model has the advantages of low price, strong adhesive force and curing at normal temperature.

Q:What's the difference between white cement and ordinary cement?: The main chemical composition of Portland cement clinker is calcium oxide, silica, alumina and iron oxide. Calcium oxide mainly derived from calcareous raw materials, such as limestone, chalk, marl; alumina and silica from aluminum silicate containing substances, such as clay, blast furnace slag and fly ash; iron oxide is used in sulfuric acid production of sulfur iron slag. For the content of calcium oxide production of Portland cement lime materials in 52%; silicon oxide content of clay in raw materials up to about 57%, the alumina content is less than 20%. In order to reduce the calcination temperature and to produce part of the melt during calcination, a small amount of iron oxide is often added. Of raw materials but also control the content of alkali and Magnesium Oxide, Magnesium Oxide is content in the cement clinker should be less than 5%, total alkalinity (Na2O+K2O) for general cement should be less than 1.2% of low alkali cement should be less than 0.6%.

Q:What is the maximum temperature at which the glass is cured?: There is no definite melting point. Ordinary glass is a substance which is made up of soda ash, calcium silicate and silicon dioxide, and Shi Yinghe feldspar is the main raw material.

Q:What are the main use of lime?: Lime milk and mortar, slaked lime or lime paste, with lots of paint. Lime mortar or slaked lime powder can be used to prepare lime mortar or cement lime mixture mortar for masonry or plastering engineering.

Q:What are the new energy-saving building materials? What's new?: Mainly include new wall materials, insulation materials, waterproof sealing materials, ceramic materials, new chemical materials, decoration materials and various industrial waste residue comprehensive utilization.

Q:What are the exterior walls of the building besides the benzene board and the extruded board?: Calcium silicate insulation insulation materials in 1980s has been recognized as the massive rigid insulation materials in one of the best, which is characterized by low density, high heat resistance, low thermal conductivity, flexural strength, high compressive strength, low shrinkage. But after entering 1990s, the promotion of the use of a downturn, the main reason is that many manufacturers to adopt in order to solve the problem of non asbestos fiber pulp, pulp fiber and not due to high temperature, thus affecting the thermal insulation material of high temperature resistance and increase the breaking rate, and not the economy.

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 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:Asbestos free calcium silicate board there is a crack in the kettle, what is the reason?: Calcium silicate slab blank (blank off off phenomenon is not forming tube adhesion fingerboard blank above)There are two reasons: one is the blank off the vacuum negative pressure is too large, the blank water is too low, low viscosity; two is felt blocked, the billet made worse.The solution is to reduce the negative pressure, strengthen the cloth washing.

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.

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