كرات مطحنة مزورة B2 الصلب 75MM

Material

C

Si

Mn

Cr

P

S

45#

0.42-0.48

0.17-0.37

0.50-0.80

≤0.15

≤0.050

≤0.035

60Mn

0.57-0.65

0.17-0.37

0.70-1.10

≤0.25

≤0.050

≤0.035

65Mn

0.62-0.75

0.17-0.37

0.90-1.20

≤0.25

≤0.050

≤0.035

B2

0.75-0.85

0.17-0.35

0.70-0.90

0.40-0.60

≤0.050

≤0.035

B3

0.50-0.65

1.35-1.85

0.40-1.0

0.80-1.20

≤0.050

≤0.035

B4

0.58-0.66

1.60-1.90

0.65-0.80

0.70-0.90

≤0.03

≤0.03

B6

0.97-1.03

0.20-0.30

1.00-1.10

0.50-0.60

≤0.025

≤0.025

Size

Tolerance(mm)

Material

Surface hardness

(HRC)

Volume hardness

(HRC)

3/4"

D20MM

0.037+/-0.005

2+/-1

B2

63-66

1"

D25MM

0.072+/-0.01

2+/-1

B2

63-66

11/4"

D30MM

0.13+/-0.02

2+/-1

B2

63-66

11/2"

D40MM

0.30+/-0.04

2+/-1

B2

62-66

2"

D50MM

0.6+/-0.05

2+/-1

B2

62-65

21/2"

D60MM

1.0+/-0.05

2+/-1.5

B2

62-65

21/2"

D65MM

1.3+/-0.05

2+/-1.5

B2

61-64

21/2"

D65MM

1.3+/-0.05

2+/-1.5

B3

61-63

3"

D75MM

2.0+/-0.06

3+/-2

B3

61-63

3"(Hot rolled)

D80MM

2.0+/-0.06

3+/-2

B3

60-63

3"(Forged)

D80MM

2.1+/-0.06

3+/-2

B3

60-62

31/2"

D90MM

3.0+/-0.07

3+/-2

B3

60-63

4"

D100MM

4.1+/-0.15

3+/-2

B3

60-63

4.5"

D115MM

6.3+/-0.15

3+/-2

B3

60-63

5"

D125MM

8.1+/-0.3

3+/-2

B3

59-62