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Jiangyin Dongbang Steel Ball Machinery Co.,Ltd

ADD:NO.42 Hua Lu Road, Huashi Town, Jiangyin City, Jiangsu Province

Tel:86-0510-86370386

Mobile:86-13812104338

Fax:86-0510-86370552

Email:grindingballsmedia@163.com

Grinding Media Steel Balls

G rinding M edia S teel B all s Introduction Dongbang brand grinding media steel balls, your best choice to reduce ball consumption 15-20% than before. Technical Datas Application: Grinding media ball for mining, like Iron Ore, Copper, Gold, Silver, etc Certification: ISO9001, ISO14001,...

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  • Product Details

Grinding Media Steel Balls Introduction
Dongbang brand grinding media steel balls, your best choice to reduce ball consumption 15-20% than before.
图片30.png 
 

Technical Datas
Application: Grinding media ball for mining, like Iron Ore, Copper, Gold, Silver, etc
Certification: ISO9001, ISO14001, OHSAS18001 etc.
Original: Jiangsu, China
Price: Negotiable
Payment term: TT, LC
Delivery date: Negotiable
Packing: export standard ton bag or Iron drum
Major Market: Middle East/ Africa/Asia/South America/Europe/North America
MOQ: 50 tons (2x20’GP)
Raw material: Steel rod,
Finished ball size: 25mm to 125mm
Our steel rod supplier: Only Chinese local steel mill, like Huai Steel, NISCO, etc.
图片31.png 
 

Characteristics
Steel rod type: B3,B4,B6
Detailed chemical comments as below:

                                                                                  Steel Rod Type: B3, Chemical Comments

C

Si

Mn

P

S

Cr

0.61-0.65

1.73-1.80

0.73-0.80

≤0.020

≤0.015

0.80-0.88

Ni

Cu

Mo

Alt

V


≤0.25

≤0.20





Steel Rod Type: B4, Chemical Comments

C

Si

Mn

P

S

Cr

0.66-0.74

1.2-1.4

0.50-0.70

≤0.022

≤0.022

0.85-1.0

Ni

Cu

Mo

Alt

V



≤0.40


0.025-0.045

0.05-0.15


Steel Rod Type: B6, Chemical Comments

C

Si

Mn

P

S

Cr

0.74-0.85

0.15-0.35

0.90-1.05

≤0.020

≤0.020

0.88-0.98

Ni

Cu

Mo

Alt

V


≤0.25

≤0.25

0.06-0.13

0.025-0.045




Detailed quality parameters of Grinding Media Steel Balls:

                                                                                   Steel Rod Type: B2, Chemical Comments
                                                                                                (Grinding Media Steel Balls)

C

Si

Mn

P

S

Cr

0.76-0.82

0.17-0.35

0.72-0.80

≤0.020

≤0.015

0.50-0.60

Ni

Cu

Mo

Alt

V


≤0.25

≤0.20

None

0.020-0.050

None


25mm-30mm Grinding Media Steel Balls Quality Performance

Ball Size

Surface Hardness

Core Hardness

Volume Hardness

25mm

63-64 HRC

62-63 HRC

62-64 HRC

30mm

63-64 HRC

62-63 HRC

62-64 HRC


Steel Rod Type: B2, Chemical Comments
     (Grinding Media Steel Balls)

C

Si

Mn

P

S

Cr

0.76-0.82

0.17-0.35

0.72-0.80

≤0.020

≤0.015

0.50-0.60

Ni

Cu

Mo

Alt

V


≤0.25

≤0.20

None

0.020-0.050

None


40mm-50mm Grinding Media Steel Balls Quality Performance

Ball Size

Surface Hardness

Core Hardness

Volume Hardness

40mm

62-64 HRC

61-63 HRC

61-64 HRC

50mm

61-64 HRC

60-63 HRC

60-63 HRC


Steel Rod Type: B6, Chemical Comments
     (Grinding Media Steel Balls)

C

Si

Mn

P

S

Cr

0.74-0.85

0.15-0.35

0.90-1.05

≤0.022

≤0.020

0.88-1.0

Ni

Cu

Mo

Alt

V


≤0.25

≤0.25

0.06-0.13

0.025-0.045

/


60-90mm Grinding Media Steel Balls Quality Performance

Ball Size

Surface Hardness

Core Hardness

Volume Hardness

Impact Toughness

60mm

62-64 HRC

59-61 HRC

59-62 HRC

≥14 J/CM2

70mm

62-64 HRC

59-61 HRC

59-62 HRC

≥16 J/CM2

80mm

61-63 HRC

58-60 HRC

59-62 HRC

≥18 J/CM2

90mm

61-63 HRC

58-60 HRC

59-62 HRC

≥20 J/CM2


Steel Rod Type: B6, Chemical Comments
     (Grinding Media Steel Balls)

C

Si

Mn

P

S

Cr

0.74-0.85

0.15-0.35

0.90-1.05

≤0.022

≤0.020

0.88-1.0

Ni

Cu

Mo

Alt

V


≤0.25

≤0.25

0.06-0.13

0.025-0.045

/


100-125mm Grinding Media Steel Balls Quality Performance

Ball Size

Surface Hardness

Core Hardness

Volume Hardness

Impact Toughness

100mm

60-62 HRC

57-60
     HRC

58-62
     HRC

≥22 J/CM2

120mm

60-62 HRC

57-60
     HRC

58-62
     HRC

≥24 J/CM2

125mm

60-62 HRC

57-60
     HRC

57-61
     HRC

≥26 J/CM2

Grinding Media Steel Balls 6 meter fall drop test: More than 20,000 times, No Break

We request our local steel rod promise us on compressional rate ? See below picture: 

图片32.png

Why do we request the compression rate 15 time at least ? Because we need to promise the steel rod have a high density to match the hot rolling method. 

Our production flow picture on Grinding Media Steel Balls:

图片33.png

1.Steel rod automatic feeding to induction;

2.Steel rod heating to requested temperature by induction furnace;

3.Heated steel rod go into hot rolling machine to make grinding balls;

4.Hot grinding balls slow cooling on convey;

5.Grinding balls cools to right temperature and go into quenching system;

6.Grinding balls after quenching, cool again by convey and send into automatic tempering furnace;

7.Grinding balls do tempering treatment by correct temperature and time upon ball size in automatic tempering furnace, go into cooling plate;

8.Grinding balls after tempering treatment, will cool to room temperature;

9.Do the packing for grinding balls, in ton bag or iron drum.

图片35.png

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