Refractory Brick High Alumina Brick Fire Clay Brick

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Product Description:

Specifications

Refractory high alumina brick
High bulk density
High compressive strength
High refractoriness
Best Price

Refractory High Alumina Brick and Mortar

Features:

1) A variety of specifications available.

2) Satisfy various technical request.

3) Lower medium spoilage.

4) Good insulation performance and high temperature resistance.

5) Stiffness texture.

6) Used in all electric products and electric heating products.

7) OEM, ODM and OBM are welcomed.

customer's drawings, samples and performance requirement are highly appreciated.

Alumina ceramic is kind of structural ceramics, with insulation resistance, voltage resistance, high strength, good thermal conductivity, dielectric loss, stable electrical performance characteristics.

Used in electronic ceramic substrates, ceramic electrical insulation, vacuum devices, devices porcelain, spark plugs and other products.

We can make the part by hot injection pressing, dry pressing, isostatic pressing and extrusion productive technology etc.

Performance
Item                                                                               Unit                            95 Al2O3             96 Al2O3             99 Al2O3                    
Physical Characteristics       Bulk density                     g/cm33.63.63.9
Water absorption           %000
Mechanical Characteristics   Flexural strength             Mpa320340360
Hardness Vickers           Gpa12.213.515.6
Elastic modulus               Gpa280320370
Poisson’s ratio                 -0.220.230.23
Thermal Characteristics   Linear expansion coefficient                 (200C-5000C) 10-6/0C7.17.28
Thermal conductivity       w/(m.k)162432
Specific Heat                     *10-3J/(kg*K)0.780.780.9
Electrical CharacteristicsDielectric constant (1MHZ) -99.49.9
Dielectric loss angle        *10-41551
Dielectric strength             *106V/m121515
Processing technology
Process range (mm)
Outside Diameter1---300
Inside Diameter0.5---300
Length0.5---1200
Accuracy of working (mm)
Perpendicularity0.01
Concentricity0.01
Roundness0.005
Straightness 0.005
Parallelism0.01
Planeness0.005
Roughness 0.05
Fit clearance0.005


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Q:The specific content is what gb/t2608-2012 brick
Quality assessment procedures, packaging, marking, transport, storage, and quality certificates. Suitable for siliceous refractory bricks.
Q:Why is the new trend of the high thermal conductivity of silica brick
The high thermal conductivity of silica brick all inherits the advantages of traditional coke oven silica brick, on the basis of further highlight the characteristics of high thermal conductivity.
Q:The chemical composition of silica brick and its physicochemical index?
Brick refers to the refractory products in more than 93% of the content of SiO2
Q:The brick is mainly used in the place?
Also used for high temperature bearing part of hot blast stove and acid open hearth furnace.
Q:The difference between clay refractory bricks and refractory brick in the application.
Brick bearing soft temperature and close to the melting point, high temperature strength, can be in high temperature (above 1400 degrees) under the condition of long-term use, but the anti alkali erosion ability, thermal shock stability is the worst, a scrap. The brick is generally used in the coke oven, glass kiln. Other industries basically do not use.
Q:Semisilica brick interpretation
Good thermal shock resistance. In use, more high viscosity glass phase can be formed, and the masonry brick joint and the working surface are dense and the masonry is complete, which is beneficial to improve the impermeability of the masonry and reduce the erosion effect of the slag on the masonry.
Q:Which material is good for furnace refractory?
Kiln types of refractories is very extensive, selection of refractory materials according to the type of furnace furnace temperature and use of selected refractory material, refractory material is divided into custom products of refractory bricks and unshaped refractory castable series products. According to chemistry, it is divided into acidic, neutral and alkaline materials.
Q:Why is the three oxidation of two silicon is very harmful impurities in silica brick
Heating calcination is the best way to extend this sort of impurity removal. Remove impurities
Q:Why will expand when heated brick
In the process of SiO2 drying, the four crystalline transformation points of 117, 163, 180~270 and 573 DEG C are found, among which the volume expansion caused by the 180~270 is the largest.
Q:Common bond brick
Lime should contain a lot of active CaO, I decompose CaCO3 and MgCO3 not more than 5%, Al2O3+Fe2O3+SiO2 no more than 5%. When the content of large particles, burned Ca-CO3 and over burned lime, the product produced caves, affecting the quality of products.

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