BFA Brown fused alumina
Brown aluminum oxide crystals is made of bauxite/anthracite coal, and smelted in electric-arc furnace of high temperature more than 2000degrees.Abrasives tools made by brown fused alumina are suitable for metal with high tensile (like:steel, malleable iron, bronze etc).and suitable for grinding, polishing, blasting, precision casting etc.Brown aluminum oxide crystal is also used for refractory material. Brown aluminum oxide crystals with characteristics like: high purity, good crystalline liquidity, low coefficient of linear expansion, corrosion resistance, high temperature, high strength.
Chemical analysis:
Al2O3(min) 92%
SiO2(max) 2%
Fe2O3(max) 2%
TiO2(max) 4%
Physical characteristics:
color Brown
Mohs Hardness 9.0
Melting point 2250â??
Maximum service temperature 1850â??
Bulk density 1.53-1.99g/cm3
Specific gravity 3.6-3.9g/cm3
Purpose:
1.grinding for konescope/glass/monocryst alline silicon/lens/jadeware
2.abrasion-proof material for expressway/airstrip/dock/ parking lot/stadium
3.bonded abrasives and coated abrasives
4.surface preparation and finishing
5.Thermal Spraying(Plasma Spraying)
6.Super Refractories, Ceramics and Tiles
7.Lapping & Micro-blasting applications
Other models:
Grain 0-1mm 1-3mm 3-5mm 5-8mm
Fine powder
0-100mesh 0-200mesh 0-320mesh
Grit
8# 10# 12# 14# 16# 20# 22# 24# 30# 36# 40# 46# 54# 60# 70# 80# 90# 100# 120# 150# 180# 220#
Micro powder
(FEPA)F230 F240 F280 F320 F360 F400 F500 F600 F800
(JIS) #240 #280 #320 #360 #400# #500 #600 #700 #800 #1000 #1200 #1500 #2000