Alumine fondue brune


Alumine fondue brune (BFA) is a type of synthetic abrasive made from high-quality bauxite and other raw materials in an electric arc furnace. BFA is known for its toughness, high hardness, and excellent wear resistance.

BFA is widely used in abrasive applications such as grinding wheels, sandblasting, and polishing. It is also used in refractory materials, céramique, et comme matière première pour la production de métal aluminium.

BFA is available in different grit sizes and can be used for a variety of applications depending on the desired surface finish and material removal rate. It is often preferred over other abrasives due to its high durability and low dust generation during use.

BFA can also be further processed to produce specialized types of abrasive grains such as microcrystalline grains, which are used for precision grinding and lapping applications, and macrocrystalline grains, which are used for heavy-duty grinding and cutting applications.

Brown-Fused-Alumina
Alumine fondue brune 19
  • Al2Ô3: 95.5% – 97.5%
  • SiO₂: 1.0% – 1.5%
  • Fe₂O₃: 0.5% – 2.0%
  • Déjà2Ô: ≤0,1%

Produits connexes

Taille des particules


Brown Fused Alumina Particle
  • Granulométrie courante des matériaux réfractaires: 0-1, 1-3, 3-5, 5-8mm, 100, 200, 325 engrener.
  • Taille de particule courante des abrasifs: 12, 14, 16, 24, 30, 36, 46, 60, 80, 100, 120, 150, 180, 200, 220, 240, 280, 325 engrener.
  • Micropoudre commune pour le polissage et le meulage: 400, 600, 800, 1000, 1500, 2000-6000 engrener.
  • La granularité du produit peut être traitée selon la granularité requise par l'utilisateur.

Caractéristiques


  • High Hardness
    Brown fused alumina is known for its high hardness, which makes it an excellent abrasive material. Its hardness is due to the strong covalent bonds between the aluminum and oxygen atoms in the aluminum oxide crystals.
  • High Strength
    Brown fused alumina has high strength, making it suitable for use in applications that require a robust and durable material. Its strength is primarily attributed to its dense, crystalline structure.
  • Stabilité chimique
    Brown fused alumina is chemically stable and resistant to most acids and alkalis, making it suitable for use in corrosive environments. This chemical stability is due to the strong chemical bonds within the aluminum oxide structure.
  • Heat Resistance
    Brown fused alumina has excellent heat resistance, which means it can withstand high temperatures without losing its physical properties. This heat resistance makes it suitable for use in high-temperature applications such as refractory materials and high-performance abrasives.
  • Grades
    Brown fused alumina is available in various grades, which are determined by the purity of the material and the type of impurities present. The grading system is essential for categorizing the product based on its quality and suitability for specific applications.
  • Grit Size Selection
    Grit size is a critical factor in determining the performance of brown fused alumina in different applications. The size of the grit is usually specified by a number, with higher numbers indicating smaller grit sizes. The selection of the appropriate grit size depends on the desired surface finish and material removal rate.

Applications


  • Abrasifs
    One of the primary applications of brown fused alumina is in the manufacturing of abrasive products such as grinding wheels, papier de verre, and blasting media. Its high hardness and strength make it an excellent choice for cutting, grinding, and polishing various materials, y compris les métaux, céramique, et du verre.
  • Refractories
    Brown fused alumina is also widely used as a refractory material, particularly in the production of high-temperature-resistant products such as bricks, castables, and monolithic linings. Its excellent heat resistance and chemical stability make it suitable for use in furnaces, fours, and other high-temperature applications.
  • Surface Treatment
    Brown fused alumina is used in surface treatment processes such as shot blasting, sandblasting, and surface polishing. Its hardness and abrasiveness make it ideal for cleaning and preparing metal surfaces before painting, welding, or other operations.
  • Other Applications
    Brown fused alumina has other niche applications, including the manufacturing of wear-resistant ceramics, anti-skid materials, and specialized grinding tools.

Paramètres


ApplicationGrain sizeAl2O3TIo2CaOSiO2Fe2O3Magnetic material content%
FOR ABRASIVESF4~F80 P12~P8095.0~95.91.7~3.40.42maximum1.0 maximum0.3maximum0.05 maximum
F90~F150 P100~P15094.5~95.91.7~3.60.42maximum1.0 maximum0.3maximum0.03 maximum
F180~F220 P180~P22094.0~95.91.7~3.80.45maximum1.2 maximum0.3maximum0.02 maximum
F230~F800 P240~P80093.5 min1.7~3.80.45maximum1.2 maximum0.3maximum
F1000~F1200 P1000~P120093.0 min4.0maximum0.50maximum1.4 maximum0.3maximum
P1200-P250092.5 min4.2maximum0.55maximum1.6 maximum0.3maximum
ApplicationGrain sizeAl2O3TIo2CaOSiO2Fe2O3Magnetic material content%
FOR REFRACTORY0-1mm 1-3mm 3-5mm 5-8mm 8-12mm95.0min0.25maximum1.0maximum3.0 maximum0.05 maximum
0-3mm 0-5mm 0-10mm 0-25mm95.0min0.25maximum1.0maximum3.0maximum0.05 maximum
180#-0 240#-0 320#-094.0 min0.30maximum1.5maximum3.5 maximum0.03 maximum

FAQ


20 Tonne

Les abrasifs en carbure de silicium sont plus durs et plus tranchants que les abrasifs à l'oxyde d'aluminium, ce qui les rend plus agressifs et coupe plus rapidement. Cependant, ils sont aussi plus fragiles, ce qui peut entraîner une dégradation plus rapide et une durée de vie plus courte de l'abrasif.

Les granulométries des abrasifs en carbure de silicium vont de grossières (24 grincer) ultrafin (1200 grincer) et sont utilisés pour différentes applications, de l'enlèvement rapide de matière au polissage de précision.

Pour choisir le bon abrasif en carbure de silicium, prendre en compte des facteurs tels que le matériau sur lequel on travaille, la finition souhaitée, la durée de vie de l'abrasif, et le matériel utilisé. En général, les matériaux plus durs nécessitent des grains plus fins, tandis que les matériaux plus mous peuvent être travaillés avec des grains plus grossiers.

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Fondé en 2001, HSA est l'un des principaux fournisseurs de fumées de silice et d'abrasifs en Chine, et également la source premium de produits hautes performances pour les industries du béton et des abrasifs.

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