Regular Brown Fused Aluminium Oxide

 

    Fused Aluminium Oxide finds highly effective application in production of variously profiled abrasive tools, coated abrasives, abrasive pastes, loose-grain machining of the tough metals' and alloyed steels' surfaces obtaining high mechanic resistance, as well as for finishing glass, wood, buffing leather, in powder metallurgy, as a filler for refractory materials and anti-burnt coating of forms prior to precision casting.
    It is produced in the forms of grain, powder and grinding micropowder.
    Grain composition of grinding materials F,P.

    Grain composition of grinding materials F

Grit

Test Sieve Q6max, %
1 2 3 3 and 4 3, 4, and 5

W1, mm (mkm)

Q1, %

W2, mm (mkm)

Q2max, %

W3, mm (mkm)

Q3min, %

W4, mm (mkm) Q3+Q4min, % W5, mm (mkm) Q3+Q4+Q5min, %
F8 4,00 0 2,80 20 2,36 45 2,00 70 1,70 * 3
F10 3,35 0 2,36 20 2,00 45 1,70 70 1,40 * 3
F12 2,80 0 2,00 20 1,70 45 1,40 70 1,18 * 3
F14 2,36 0 1,70 20 1,40 45 1,18 70 1,00 * 3
F16 2,00 0 1,40 20 1,18 45 1,00 70 (850) * 3
F20 1,70 0 1,18 20 1,00 45 (850) 70 (710) * 3
F22 1,40 0 1,00 20 (850) 45 (710) 70 (600) * 3
F24 1,18 0 (850) 25 (710) 45 (600) 65 (500) * 3
F30 1,00 0 (710) 25 (600) 45 (500) 65 (425) * 3
F36 (850) 0 (600) 25 (500) 45 (425) 65 (355) * 3
F40 (710) 0 (500) 30 (425) 40 (355) 65 (300) * 3
F46 (600) 0 (425) 30 (355) 40 (300) 65 (250) * 3
F54 (500) 0 (355) 30 (300) 40 (250) 65 (212) * 3
F60 (425) 0 (300) 30 (250) 40 (212) 65 (180) * 3
F70 (355) 0 (250) 25 (212) 40 (180) 65 (150) * 3
F80 (300) 0 (212) 25 (180) 40 (150) 65 (125) * 3
F90 (250) 0 (180) 20 (150) 40 (125) 65 (106) * 3
F100 (212) 0 (150) 20 (125) 40 (106) 65 ( 75) * 3
F120 (180) 0 (125) 20 (106) 40 ( 90) 65 ( 63) * 3
F150 (150) 0 (106) 15 ( 75) 40 ( 63) 65 ( 45) * 3
F180 (125) 0 ( 90) 15 ( 75) * ( 63) 40 ( 53) 65 *
F220 (106) 0 ( 75) 15 ( 63) * ( 53) 40 ( 45) 60 *
* - not regulated

W1,W2,W3,W4,W5 - cell size of 1,2,3,4 and 5 sieve in light
Q1,Q2,Q3 - rest of grinding material on sieves 1,2 and 3
Q3+Q4 - total rest of grinding material on sieves 3 and 4
Q3+Q4+Q5 - total rest of grinding material on sieves 3, 4 and 5
Q6 - rest of grinding material on pallet

    Grain composition of grinding materials P

Grit

Test Sieve

Q6max, %

1 2 3 4 5

W1, mm (mkm)

Q1, %

W2, mm (mkm)

Q2max, %

W3, mm (mkm)

Q3min, %

W4, mm (mkm)

Q4min, %

W5, mm (mkm)

Q5min, %

P12

3,35

0

2,36

1

2,00

144

1,70

619

1,40

92

8

P16

2,36

0

1,70

3

1,40

266

1,18

759

1,00

96

4

P20

1,70

0

1,18

7

1,00

428

(850)

866

(710)

96

4

P24

1,40

0

1,00

1

(850)

144

(710)

619

(600)

92

8

P30

1,18

0

(850)

1

(710)

144

(600)

619

(500)

92

8

P36

1,00

0

(710)

1

(600)

144

(500)

619

(425)

92

8

P40

(710)

0

(500)

7

(425)

428

(355)

866

(300)

96

4

P50

(600)

0

(425)

3

(355)

266

(300)

759

(250)

96

4

P60

(500)

0

(355)

1

(300)

144

(250)

619

(212)

92

8

P80

(355)

0

(250)

3

(212)

266

(180)

759

(150)

96

4

P100

(300)

0

(212)

1

(180)

144

(150)

619

(125)

92

8

P120

(212)

0

(150)

7

(125)

428

(106)

866

(90)

96

4

P150

(180)

0

(125)

3

(106)

266

(90)

759

(75)

96

4

P180

(150)

0

(106)

2

(90)

155

(75)

6212

(63)

90

10

P220

(125)

0

(90)

2

(75)

155

(63)

6212

(53)

90

10

W1,W2,W3,W4,W5 - cell size of 1, 2, 3, 4 and 5 sieve in light
Q1 - rest of grinding material on sieve 1
Q2 - total rest of grinding material on sieves 1 and 2
Q3 - total rest of grinding material on sieves 1, 2 and 3
Q4 - total rest of grinding material on sieves 1, 2, 3 and 4
Q5 - total rest of grinding material on sieves 1, 2, 3, 4 and 5
Q6 - total rest of grinding material on pallet

    Mass share of magnetic material

Material Mark Grit Mass share %, not more
Brown Fused Aluminium Oxide 15A F220 0,2
14A P12-P220 0,2
14A F12-F220 0,2
13A F12-F220 0,8

 

    Chemical composition of Brown Fused Aluminium Oxide
Mark Grit Mass share, % Test grit
Al2O3, not less Fe2O3, not more TiO2, not less CaO, not more

15A

F220

95,0

0,5

1,8

0,6

F220

14A

F12-F30

94,0

0,6

1,8

0,8

F20

14A

P12-P30

94,0

0,6

1,8

0,8

P20

14A

F36-F80

94,5

0,5

1,8

0,8

F60

14A

P36-P80

94,5

0,5

1,8

0,8

P60

14A

F90-F180

93,0

0,7

1,8

0,9

F120

14A

P100-P220

93,0

0,7

1,8

0,9

P150

14A

F220

93,0

0,8

1,8

1,1

F220

13A

F12-F90

-

1,3

1,8

1,0

F40

13A

F100-F220

-

1,3

1,8

1,3

F150

 

    Destroying and abrasive ability of grinding materials
Indicator Grit Value of indicator for marks 15A, 14A, 13A Test grit
Destroying, % not more F12-F30 52 F14
P12-P30 52 P16
F36-F80 52 F60
P36-P80 52 P60
Abrasive ability, g not less F90-F150 0,06 F150
P100-P180 0,06 P180
F180-F220 0,05 F220
P220 0,05 P220

 

    Bulk density of grinding materials
Grit Bulk density, g/sm3 not less Test grit

F12-F16

1,88

F16

P12-P16

1,88

P16

F20-F22

1,83

F22

P20

1,83

P20

F24-F46

1,78

F46

P24-P40

1,78

P40

F54-F80

1,76

F80

P50-P80

1,76

P80

F90-F220

1,74

F150

P100-P220

1,74

P150

 

FUSED ALUMINIUM OXIDE GRINDING MICROPOWDERS

    In loose-form and pastes these materials are advantageously used for grinding and polishing of metallic and glass parts, as far as for the clock-parts finishing in the clock industry.

    Grain composition of micropowders grits P280-P1200

Grit Maximum grain size of distribution curve ds0, not more Grain size at 3% point of distribution curve ds3, not more Grain size at 50% point of distribution curve ds50 Grain size at 94% point of distribution curve ds94, not less

P280

101

74,0

52,22,0

39,2

P320

94

66,8

46,21,5

34,2

P360

87

60,3

40,51,5

29,6

P400

81

53,9

35,01,5

25,2

P500

77

48,3

30,21,5

21,5

P600

72

43,0

25,81,0

18,0

P800

67

38,1

21,81,0

15,1

P1000

63

33,7

18,31,0

12,4

P1200

58

29,7

15,31,0

10,2

 

    Grain composition of micropowders grit P240
Side size of sieve cell, mkm Rest on sieve, % Side size of sieve cell, mkm Goes through sieve, % not more

106

0

-

-

75

8, not more

-

-

63

not regulated

-

-

63-53

6010

-

-

45

not regulated

45

12

 

    Grain composition of micropowders in mm

Grit

Grain size at 3% point of distribution curve ds3, not more

Grain size at 50% point of distribution curve ds50

Grain size at 94% point of distribution curve ds94, not less

F230

82

53,03,0

34

F240

70

44,52,0

28

F280

59

36,51,5

22

F320

49

29,21,5

16,5

F360

40

22,81,5

12

F400

32

17,31,0

8

F500

25

12,81,0

5

F600

19

9,31,0

3

F800

14

6,51,0

2

F1000

10

4,50,8

1

F1200

7

3,00,5

1*

* Graine size at 80% point of distribution curve

    Chemical composition of grinding powders from Aluminium Oxide F

Grit Mass share, %
Fe2O3, not more TiO2, not less CaO, not more Al2O3, not less

F230-F280

0,4

1,8

0,5

96

F320-F600

0,4

1,8

0,5

95

F800-F1000

0,5

1,8

0,5

94

F1200

0,5

1,8

0,7

94

 

    Cutting ability
Grit Cutting ability, g/min not less

P240

0,051

P280

0,047

P320

0,045

P360

0,045

P400

0,045

P500

0,035

P600

0,030

P800

0,026

P1000

0,020

P1200

0,014

 

Grit Cutting ability, g/min not less

F230

0,055

F240

0,045

F280

0,045

F320

0,034

F360

0,026

F400

0,026

F500

0,020

F600

0,014

F800

0,010

F1000

0,007

F1200

0,004

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