Abrasive&Refractory Material Silicon Carbide Green

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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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GREEN SILICON CARBIDE(GC)

Green silicon carbide is characterized by strong grinding efficiency and good heat-conductivity. Its hardness and strength are higher than fused alumina.

 

 

Applications:

1. Used to grind hard and brittle metal alloys, non-ferrous metals and non-metallic 

 

   materials like jewels,optical glass and ceramics.

2. Suitable for manufacturing vitrified wheels and belts, organic wheels and sheets.

3. Applied to refractory industry.

4. Powder of GC is also used as wire sawing semi-conductor raw materials.

 

Chemical Composition:

Type

Grit

Chemical Composition(%by weight)

SiC(≥)

F.C(≤)

Fe2O3(≤)

GC
(Vitrified wheels and belts)

F20-F90

99.0 

0.20 

0.20 

F100-F150

98.5 

0.25 

0.50 

F180-F220

97.5 

0.25 

0.70 

F240-F600

97.0 

0.30 

0.70 

F800-F1200

95.5 

0.40 

0.70 

P12-P100

99.0 

0.20 

0.20 

P120-P150

98.5 

0.25 

0.50 

P180-P220

97.5 

0.25 

0.70 

P240-P1000

97.5 

0.30 

0.70 

P1200

95.5 

0.40 

0.70 

GC-B
(Organic wheels)

F20-F90

98.5 

0.25 

0.25 

F100-F150

98.0 

0.30 

0.55 

F180-F220

97.0 

0.30 

0.80 

F240-F600

96.5 

0.35 

0.80 

F800-F1200

94.5 

0.45 

0.80 

GC-P
(Sheets)

P12-P100

98.5 

0.25 

0.25 

P120-P150

98.0 

0.30 

0.55 

P180-P220

97.0 

0.30 

0.80 

P240-P1000

96.5 

0.35 

0.80 

P1200

94.5 

0.45 

0.80 

Note: Special requirements can be satisfied by negotiation.

Abrasive&Refractory Material Silicon Carbide Green

 


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Q:Does anyone know about the fire resistance period of thin fireproof coatings?
The columns are 2.5 to 3.0 hours, beams are 2.5 hours, C-shaped steels are 0.5 hours. The thin steelwork fireproof coatings are primarily water-soluble, which will be expanded and foamed when exposing to the fire. Thus the fire-resistant insulation layer formed through expansion and foaming will delay the temperature increase of the steel and protect of steel components. The thin fireproof coatings are made of adhesives, catalysts, carburizers, foamers, fillers, fibers and modifiers. The required emulsion polymers must have good adhesion, durability, and water-resistance to the steel substrates. The coating has a strong adhesion and good flexibility, is light and thin, as well as highly resistant to vibration. It is especially applicable for indoor bareness steel structure, light layer steel structure, and steel structure with decoration demands whose fire resistance requirement is within 1.5-2.5 hours.
Q:What advantage and disadvantages it has compared to common fire insulation materials
Main advantage of A-level fire proof heat retaining plate is A-level non-conbustibility. Now residential areas strictly require the external walls to be high-level fire proof, to be specific, high fire resistance, non combustible. Standards for evaluation varies according to different types, which includes anti-corrosion, acid and alkali resistance, waterproof, anti termites and so on. Disadvantage is the insulation effect is quite ordinary. It will absorb water, get deformed, need some water prevention measures after constrcuting thermal insulating layer for it. Its thermal conductivity far below the benzene plate, and plastic extruded palte, half the thickness of the polyurethane insulation layer can reach heat perservation effectiveness of the benzene plate and extruded plate of the same thickness.
Q:How to distinguish the fire resistant level of the rubber and plastic thermal insulation material?
Fire rating grading of external wall thermal insulation materials. 1, China's national standard GB8624-97 divides the combustion performance of building materials external insulation materials into the following grades. Level A: Incombustible materials: Almost no burning materials. Level B1: Incombustible materials: Flame-like material has good fire-retardant effect. In case of fire in the air or at high temperature, it is difficult to fire and doesn't spread quickly, and when the fire source is removed after combustion, it stops immediately. Level B2: Incombustible materials: Combustible materials have a certain flame resistance. In case of fire in the air or at high temperature, it will immediately burst into flames, and easily leads to the spread of fire, such as poles, wooden frame, wooden beams and wooden stairs,ect. Level B3 : Incombustible materials: No flame-retardant effect, hidhly flammable and high fire risk. 2, The external wall thermal insulation materials could be divided according to the fire rating. 1) thermal insulation material that has the level A combustion performance: Spraying inorganic fiber, glass wool, foam glass, ceramic foam, rock wool, foam cement and perlite obturator, and so on. 2), The thermal insulation material that has level B1 combustion performance: Special processed extruded polystyrene board (XPS) / special processed polyurethane (PU), phenolic and polystyrene powder. 3), Thermal insulation materials that have level B2 combustion performance: Molded polystyrene board (EPS), extruded polystyrene board (XPS), polyurethane (PU), polyethylene (PE), etc.
Q:Who knows what material is in the center of fireproof rolling curtain?
made of inorganic super fireproof rolling curtain: Glass fiber cloth ceramic fiber cloth (reinforced stainless steel wire) ceramic fiber blanket aluminum foil cloth. Hope my answer will help you.
Q:What are the materials of class A fire resistant window?
Environmentally friendily, non-poisoned non-peculiar smell, non-radioactive; non-combustible, fireproof, moisture-proof, corrosion-resistant; easy to operate, lightweight, high strength, themal insulation, sound insulation; able to be cut, planed, sawed and carved. It also meets GB8624 -2006A1 level non-combustible standards. Lightweight, high strength, anti-aging, corrosion resistance; meeting the GB / T20285-2006 Opium (AQ1) safety and environmentally friendly products; Foamed fire door core board specifications: 2100 × 900 × (26 ~ 65) mm; 2050 × 850 × (26-65), and many other specifications. I hope my answer can help you.
Q:About the use of horseshoe glass kiln refractories
the lower portion of advanced clay brick, the lower portion of magnesia-chrome brick arch - high-purity silica brick; flue - clay brick; breast wall--33 # fused zirconia corundum brick (with shrinkage); fused zirconia bottom --33 # fused zirconia corundum brick (with shrinkage); regenerative chamber- the upper part of sintered magnesia-chrome brick, cooling section 33 # electric smelting no shrinkage fused zirconia corundum brick; the wall - the melting section 41 # no shrinkage fused zirconia corundum brick (including 41% of zirconium; the lattice- superstructure of high purity magnesia brick, the same below); small stove --33 # fused zirconia corundum brick (with shrinkage). It can be said that it is the maximum configuration, if the funds is limited it can be downshift appropriately.
Q:What is the fireproofing requirements of external wall thermal insulation materials?
in the 2011 and 2012 revised version of "Fireproof  Specification of Building Design" in China, the external insulating layer of above 50 meters (approximately 16 layers) of the housing must use the level A material. The latest draft for approval is not so strict, above 100 meters (about 33 layers) only use level A material. The manuscript of "Building Regulations" is also regulated building's external wall thermal insulation materials in the crowded places should be level A. Except the residential buildings and the buildings in the crowded places, the height of other buildings is greater than 50 meters, combustion performance of insulation materials should be level A; the height buildings is greater than 24 meters but not more than 50 meters, combustion performance of insulation materials should not be lower than level B1. "Building Regulations" manuscript should relax the rules on the aspect of protective coating in level B1 and B2 insulation material. The outer of level B1 and B2 level insulation material must use incombustible material as protective coating, its thickness is changed from the original 10 cm to 5 cm. Given certain conditions, I feel you can use TDD exterior wall thermal insulation decoration integrated rock wool board for construction, which is level A fireproofing with a short construction period and good thermal insulation properties. I hope I can help you!
Q:Development trend of refractories
The foundation of China's refractories industry is still relatively weak, the utilization level of refractory material resources is low, the quality of refractory materials is not high, excess production capacity of ordinary products, the key products of some high-quality high technology content can be produced, but the quality is not stable, and the service life of refractory material consumption compared with foreign advanced level, there is a considerable gap. Therefore, the new trend of tracking foreign refractories science and technology development, carry out and supporting the development and application of advanced and basic theory research, to promote technological innovation of refractory materials, optimizing product structure, industrial structure adjustment, implementation of the strategy of sustainable development, it is very necessary.
Q:What is the criterion of entry of refractory clay industry?
Chemical composition of refractory clay is one of the important factors affecting its quality. Al2O3 is the beneficial part of refractory clay, and it mainly exists in aluminum hydroxide minerals (diaspore, boehmite, gibbsite), and it also exists in aluminosilicate minerals (kaolinite, illite montmorillonite, etc.). In general, the content of Al2O3 in soft and semi-soft clay is 30% to 45%, the hard clay is 35% to 50%, and high alumina clay 55% to 70%. Fe2O3 mainly exists in hematite, magnetite, goethite and siderite, and is the main harmful component of refractory clay. There is no evident law on the content of Fe2O3. The content in high alumina clay is 0.5% to 2.2%, hard clay is 0.5% to 2.5%, and the soft clay is generally 1.0% to 2.5%. K2O and Na2O are harmful impurities in refractory clay, which mainly exist in illite and mica and other minerals, and the content varies greatly. CaO and MgO, etc., although they are harmful impurities, but the content is generally small.
Q:What's the classification of flameproof glass, the refractory time of fireproofing glass.
there mainly are five fireproofing glasses, the first one is laminated composite fireproof glass, the second one is wired fire-resistant glass, the third one is special fireproofing glass, the fourth one is hollow fireproof glass,the fifth one is high strength monolayer cesium potassium fireproof glass.

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