Black Fused Alumina, Black Fused Alumina Abrasives, Black Fused Aluminium Oxide

Product introduction

Black Fused Alumina is also known as low aluminum corundum. (Al2O3) content is 70% ~ 80%, containing more silicon oxide and titanium oxide impurities, It is also a new type product of polishing material, and it is a dark gray crystal body made αAl2O3 and ferropicotite as main ore in the electric arc furnace by smelting the bauxite.
Black Fused Alumina has characteristics of moderate hardness, high toughness, high temperature resistance, and stable thermal stability. and it is mainly suitable for free grinding, such as coarse grinding before electroplating products, mainly for polishing and sandblasting of stainless steel, fabricated metal products.

Available sizes of Black Fused Aluminum Abrasives
JIS: #8 #10 #12 #14 #16 #20 #24 #30 #36 #46 #54 #60 #70 #80 #90 #100 #120 #150 #180 #220 #240 #280 #320 #360 #400 #500 #600 #800 #1000 #1200 #1500 FEPA: F8 F10 F12 F14 F16 F20 F22 F24 F30 F36 F40 F46 F54 F60 F70 F80 F90 F100 F120 F150 F180 F220 F230 F240 F280 F320 F360 F400 F500 F600 F800 F1000
Application

1.For Free grinding, such as glass industry.

2.For non-slip of airport and road, chemical factory board paving.

3.For Produce ceramic grinding wheel, resinoid grinding wheel, grinding stone.

4.For free grinding, such as coarse grinding before electroplating products.

5.For polishing and sandblasting of stainless steel, fabricated metal products.

6.For investment casting techniques of stainless steel and aluminum casting in coating.

7.For sand paper, sand cloth, sand belt; polish wax, abrasive paste, coating etc.

8.For abrasion and high temperature resistant in steel metallurgy, various industrial stoves.

Chemical Analysis of Black Fused Aluminum Abrasives

Item	Main Chemical Compositions %
Item	Al2O3	Fe2O3	Sio2
BA-1	81-85	9-11	<=8
BA-2	75-78	11-12	<=10

Physical Properties of Black Fused Aluminum Abrasives

Item	Indicators
Color	Black
Crystal	Trigonal system
Hardness(mohs)	>=9.0
Melting Point(℃)	2050
The Maximum Temperature	1850
True Density(g/cm3)	>=3.50
Linear expansion coefficient(0-1600℃)	7-9