Brown Fused
Alumina
Brown fused alumina is made of bauxite,
anthracite coal, and smelted in electric-arc furnace of high temperature more
than 2000 degrees. Abrasives tools made by Haixu/Sicheng brown fused alumina
are suitable for metal with high tensile(like: steel, malleable iron, bronze
etc). Suitable for product high consolidation abrasive, and suitable for
grinding, polishing, blasting, precision casting etc. Haixu/Sicheng brown fused
alumina is also used for refractory material. Brown fused alumina with
characteristics like: high purity, good crystalline liquidity, low coefficient
of linear expansion, corrosion resistance, high temperature, high strength.
Main Physical Properties
|
MOHS HARDNESS
|
9.0
|
|
BULK DENSITY
|
1.75-1.95g/cm3
|
|
SPECIFIC GRAVITY
|
3.6-3.9g/cm3
|
|
VOLUME DENSITY
|
3.6-3.9g/cm3
|
|
MELTING POINT
|
2250°C
|
|
MAXIMUM SERVICE TEMPERATURE
|
1900°C
|
|
PROPERTIES TYPE
|
ABRASIVES
|
|
“FEPA”
|
8# 10# 12# 14# 16# 20# 22#
24#
30# 36# 40# 46# 54# 60#
70# 80# 90# 100# 120# 150# 180# 220#
F230 F240 F280 F320 F360
F400 F500 F600 F800 F1000 F1200 F1500 F2000
|
|
“JIS”
|
240# 280# 320# 360# 400#
500# 600# 700# 800# 1000# 1200# 1500# 2000# 2500# 3000# 4000# 6000# 8000#
|
|
Guarantee Value
|
Typical Value
|
|
Chemical
Composition
|
Al2O3
|
≥94
|
94.5
|
|
SiO2
|
≤2
|
1.4
|
|
Fe2O3
|
≤2
|
1.2
|
|
TiO2
|
≤4
|
3.2
|
|
|
|
|
|
|