1700CSilicon Carbide SiC Bond Si3N4 Tube Supplied by CNBM

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China main port
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TT OR LC
Min Order Qty:
25 m.t.
Supply Capability:
2000 m.t./month

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Packaging & Delivery

Packaging Details:1.The finished silicon refractory product are packed in wooden cases 
2.According to your requirements
Delivery Detail:About 7-20days after receiving the deposit

1700C silicon carbide SiC bond Si3N4 tube 1700C silicon carbide SiC bond Si3N4 tube

Silicon Nitride (Si3N4) bonded silicon carbide (SiC) material is a new type of advanced refractory materials. Compared with silicon carbide product, the product has characteristics of small thermal expansion, high thermal conductivity, not easy to have thermal stress, good thermal shock resistance, corrosion resistance, extreme cold or heat, oxidation, high temperature creep resistant ability and easily made into products with high dimensional accuracy requirements in line. Silicon nitride combined silicon carbide products have very high strength for normal atmospheric temperature, and it remains almost the same time with the strength and hardness at high temperature 1200-1400C. with the difference of using atmosphere, the maximum safe operating temperature could reach 1650-1750C.

 

Project

Index

Apparent porosity

≤16%

Bulk density

≥2.65g/cm3

Cold compression strength 

≥160Mpa

Modulus rapture at room temperature  1400C

≥45Mpa

Modulus rapture at elevated temperature 1400C

≥50Mpa

Coefficient of thermal liner expansion 1100Cx10‾6/C

4.18

Thermal conductvity  1100C w·m‾1·k‾1

≥17

Refractoriness

1800C

0.2Mpa loading softening point

1600C

Max working temperature

1550C

 

Composition %

SiC

≥71

Si3N4

≥23

Fe2O3

≤1.0

Si

≤0.4


1700CSilicon Carbide SiC Bond Si3N4 Tube Supplied by CNBM


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Q:What is required to do refractory material?
I have no idea
Q:What is shapeless refractory?
Q:Are the specification of fireclay bricks and ordinary clay brick the same?
The standard size of refractory bricks in our country is: 230mm × 114mm × 65mm; ordinary brick: 240 ×115 ×53, building blocks: (it is divided into blind hole and via) 240×390×190, 240×190×190, 240×90×190, 190×190×190, 190×390×190, 190×190×190, 190×90×190, 140×390×190, 140×190×190, 990×200×400, 0×390×190, 90×190×190, 90×90×190. Another is interlocked hollow block : 90×200×400,90×200×245,90×200×200,90×200×100,90×200×290,150×200×275,150×200×200,150×200×100,150×200×290.
Q:What's meaning of CN of fire-resistant material?
The commonly used preparation methodsinclude shock compression, high-pressure pyrolysis, ion implantation, reactive sputtering, plasma chemical vapor deposition, electrochemicaldeposition, ion beam sputtering, , low-energy ion radiation, pulsed arc discharge,pulsed laser inducing, etc. But the compounding result of superhard materialis not ideal due to deposition of amorphous CN film, nanometer level sizedC3N4 crystalline grain set in the amorphous film and few large graincrystal.
Q:How long is the fire endurance of fire resistant rolling shutter door?
According to fire endurance, fire doors can be divided into Class A, Class B and Class C fire doors, whose fire resistance should be no less than 1.20h, 0.90h and 0.60h respectively. You can use fire resisting shutters to seperate fire compartments in places where it is difficult to set firewalls. When using the fire resisting shutter with unexposed surface temperature rise as fire endurance conditions, its fire endurance should be no less than 3h. But when using the fire resisting shutter without unexposed surface temperature rise as fire endurance conditions, you should set independent protection of closed automatic water spray system at two sides of the shutter, and the duration of water spraying should be no less than 3.0h. I hope it's useful.
Q:What's the feature of construction external wall fireproof and thermal inuslation matertial?
It has properties of low heat conductivity coefficient, low density, high flexibility, fireproof and waterproof. Its heat conductivity coefficient at normal temperature is 0.018W / (K · m) . The thermal insulation property is three to eight times that of the traditional materials. And it is completely waterproof. [2] Thermal insulation lining has properties of low heat conductivity coefficient, low density, high flexibility, fireproof and waterproof. Light, generally about10-96kg / m3, 20kg / m3 or less is felt, 24-48kg / m3 is middle-hard plate, 48-96kg / m3 is hard plate, wherein 48kg / m³ can be used as ceiling, with softening point being 500 ° C , thermal insulation 300 ° C. It is widely used in the United States, k =0.9. Calcium silicate thermal insulation product is developed in 1970s in China. With high compressive strength, low heat conductivity coefficient, recycle and easily construction, it is widely used in the power system. In China, small workshop production were the most common, then four production lines were gradually introduced from America, including instant fiber forming, dry method punched felt, which are advanced and quality, temperature endurance up to 800-1250 ° C.
Q:What occupational hazards should be detected in glass ceramic and refractories industry?
Q:The history of refractory material
Q:What are the standards of refractory concrete ?
General requirements (1) All the materials for compounding refractory concrete must meet the design requirements and they should be checked according to the relevant standard. (2) The compounding of refractory concrete should be done strictly in accordance with the compounding proportion (usually weight), and the using of various binders, aggregates, coagulant, and water should be accurately measured. Tolerance of difference of cement, powder and water should be not more than 1 %; weight of aggregates does not exceed 3%. (3) The mix of different varieties of concrete must be prevented. (4) A variety of raw materials should be piled separately according to different species, mark numbers, dates of manufacture. Do not mix with limestone, silica, railroad ballast, dirt and other harmful debris.
Q:For refractory, what is critical particle size? Thank you.
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