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棕刚玉 BROWN FUSED ALUMINA

      棕刚玉是由铝矾土经电弧炉冶炼而成,呈棕褐色,产品硬度高、韧性大,用其制成的磨具适用于磨削碳素钢、一般合金钢、可锻铸铁、硬青铜等,并广泛应用于刚玉铁沟浇铸料,捣打料等耐火制品。

      It is a kind of regular Brown Aluminum Oxide abrasive grains, the shape of the grain is blocky and edge sharp with the high loose bulk density. To get the kind of grains, we specially process the ingots, separate the magnetic material, and sieve the grains carefully to get a complete range of grit sizes.
As an abrasive, It is mainly used in making vitrified bonded grinding wheels. As loose grains, it is widely used for pressure blasting, surface finish and other general industrial applications.

      用途及产品代号

 

用途

用于陶瓷磨具

用于有机磨具

用于砂带

用于张页涂附磨具

用于喷砂

产品代号

A

A-B

A-P1

A-P2

A-S

棕刚玉理化指标典型值

牌号

粒度号

化学成份%

煅烧温度 .

磁性物含量 ≤

堆积密度(g/cm3)

AL2O3

SiO2

TiO2

Fe2O3

CaO

A

F46

95.72

0.92

2.52

0.06

0.28

1050-1350

0.009

1.85

F120

95.30

1.12

2.74

0.07

0.27

1050-1350

0.008

1.62

F180

94.70

1.27

2.93

0.15

0.39

1050-1350

0.006

1.54

F360

92.42

1.75

3.85

0.62

0.45

1050-1350

0.022

1.29

A-B

F46

95.56

1.12

2.39

0.06

0.30

-

0.006

1.85

F120

95.12

1.22

2.62

0.08

0.32

-

0.009

1.61

F180

94.32

1.30

2.91

0.16

0.30

-

0.010

1.54

F360

91.47

1.78

4.36

0.65

0.50

-

0.018

1.22

A-P1

P40

95.57

1.08

2.45

0.06

0.28

-

0.007

1.72

P120

94.85

1.17

2.76

0.05

0.29

-

0.009

1.58

P180

93.89

1.37

3.40

0.15

0.32

-

0.006

1.52

P600

91.82

1.69

4.67

0.52

0.49

0.008

1.25

A-P2

P40

93.27

1.32

3.20

0.19

0.30

-

0.007

1.71

P120

92.85

1.27

3.21

0.21

0.37

-

0.008

1.56

P180

91.65

1.42

3.72

0.27

0.42

-

0.007

1.50

P600

90.80

1.77

4.62

0.72

0.56

-

0.006

1.21

   
Color Dark brown
Shape Blocky, tough and sharp
Crystal Form Alpha-alumina trigonal system
True Specific Gravity
3.96 g/cm3
Hardness
2090 Knoop scale; 9.0 Mohs scale
Melting Temperature

About 2050 ℃

Magnetic Material 0.0076%
Toughness 50.46
Hydrophilic 34.00
  Bulk Density Test Value (g/cm3)  
Grit No F12 F14 F16 F20 F22 F24 F30 F36 F40 F46
B.D 2.04 2.03 2.00 1.98 1.96 1.94 1.92 1.91 1.85 1.85
Grit No F54 F60 F70 F80 F90 F100 F120 F150 F180 F220
B.D 1.83 1.80 1.79 1.77 1.75 1.68 1.65 1.64 1.61 1.59
  Grit Size Available (F)  
8 12 14 16 20 22 24 30 36 40 46 54 60 70 80 90 100
120
150 180 220 240 280 320 360 400 500 600 800 1000 1200 1500 2000
  Particle Size Distribution (PSD)  
PSD According to ISO, ANSI, FEPA and JIS.
  Packing Way Selection  
a. In 25kg plastic woven bags.
b. In 1000kg big bag.
c. 40 x 25kg plastic woven bags in one big bag.
d. 40 x 25kg plastic woven bags on pallet.
e. 40 x 25kg paper bags on pallet.
f. According to client’s special requirement.

棕刚玉微粉:

 

性能:呈汪棕褐色,韧性高,能承受较大压力
适用范围:可做固结及涂附磨具,湿式或干或喷射砂,超精研磨和抛光及制做高级耐火材料等。适合加工碳素钢,合金钢,可锻铸铁,硬青钢及半导体材料。

 

Property:It is brown and features toughness and impact strength .It can bear high Pressure.
Usage:It is suitable for making bonded and coated abrasive tools,wet or dry blasting,superprecision grinding and polishing,making high quality refactory materials,grinding carbon steel,alloy steel,malleable cast iron,hard bronze and semi-conductor materials.
化学成份:
名称  规格 化学成分 物理性能
AL2O3不少于 Fe2O3不多于 TiO2 SiO2不多于 Na2O不多于 SiC不少于 FC不多于 FSiO2+FSi不多于 显微硬度 颗粒密度
棕刚玉微粉 W63-W14
W14-W20
92.00
91.00
  1.5-3.8
15.-3.8
          2000-2200 ≥3.90
微粉粒度及尺寸范围
类别 粒度 基本粒尺寸范围 类别 粒度 基本尺寸范围
微粉 W63 63-50 精微粉 W3.5 3.5-2.5
W50 50-40
W40 40-28
W28 28-20 W2.5 2.5-1.5
W20 20-14
W14 14-10 W1.5 1.5-1.0
W10 10-7
W7 7-5 W1 1.0-0.5
W5 5-3.5
 

 

 

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