Professional Manufacture Forged Steel Balls for Grinding Mine Cement Mill Media

• Customization: Available
• Material: 60mn; B2;B3; B4
• Content: Other
• Model NO.: JD FB 10-150
• Size: 20mm to 150mm
• Color: Black
• Customized: Customized
• Product Name: Forged Steel Ball
• B2 Cr: 0.2-0.6
• Surface Hardness: Greater or Equal to 60 HRC
• Core Hardness: Greater or Equal to 55 HRC
• Packaging Details: Iron Drum/Ton Bag
• Standard: ISO9000
• Transport Package: Drum/Ton Bag
• Specification: 20 25 30
• Trademark: JUNDA
• Origin: China
• HS Code: 7326110000
• Production Capacity: 5000tons/Month
• Package Size: 75.00cm * 75.00cm * 70.00cm
• Package Gross Weight: 1002.000kg

Product Description

Product Description

High quality Forged Steel Ball Forged Steel Balls grinding ball grinding steel ball

Producing process
1. After checking and testing the round alloy steel bar material,the production can be started according to the size
of the steel ball
2.The steel forging is heated to a certain temperature by intermediating with frequency furnace to ensure the
effective generation of variables in the forging;  
3.The red-hot steel forging is sent into the air hammer and processed by skilled operators.  
4.After forging the red hot steel ball immediately into JUNDA specially designed heat treatment equipment
for quenching and tempering heat treatment, the high and uniform hardness value of the steel ball can be ensured.

Technical parameters of forging steel ball

Inch

Size

T weight

Tolerance(mm)

Material

Surface hardness(HRC)

Volume hardness(HRC)

3/4"

D20mm

0.037+/-0.005

2+/-1

B2

63-66

63-66

1"

D25mm

0.072+/-0.01

2+/-1

B2

63-66

63-66

11/4"

D30mm

0.13+/-0.02

2+/-1

B2

63-66

63-66

11/2"

D40mm

0.30+/-0.04

2+/-1

B2

62-66

62-66

2"

D50mm

0.6+/-0.05

2+/-1

B2

62-65

61-64

21/2"

D60mm

1.0+/-0.05

2+/-1.5

B2

62-65

60-62

21/2"

D65mm

1.3+/-0.05

2+/-1.5

B2

61-64

60-62

21/2"

D65mm

1.3+/-0.05

2+/-1.5

B3

61-63

60-62

3"

D75mm

2.0+/-0.06

3+/-2

B3

61-63

60-62

3"(Hot rolled)

D80mm

2.0+/-0.06

3+/-2

B3

60-63

60-62

3"(Forged)

D80mm

2.1+/-0.06

3+/-2

B3

60-62

53-57

31/2"

D90mm

3.0+/-0.07

3+/-2

B3

60-63

59-62

4"

D100mm

4.1+/-0.15

3+/-2

B3

60-63

59-62

4.5"

D115mm

6.3+/-0.15

3+/-2

B3

60-63

57-60

5"

D125mm

8.1+/-0.3

3+/-2

B3

59-62

55-60

Chemical composition

C%

Si%

Mn%

Cr%

P%

S%

Ni%

B2

0.72-1.03

0.15-0.35

0.3-1.2

0.2-0.6

≤0.035

≤0.035

i≤0.25

B3

0.53-0.88

1.2-2.00

0.50-1.20

0.7-1.20

≤0.035

≤0.035

i≤0.25