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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 Ball

G rinding M edia S teel B all Introduction Dongbang brand grinding media steel ball, 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, OHSAS18001...

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Grinding Media Steel Ball Introduction
Dongbang brand grinding media steel ball, your best choice to reduce ball consumption 15-20% than before.
图片23.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 (1” to 5”)
Our steel rod supplier: Only Chinese local steel mill, like Huai Steel, NISCO, etc.  图片24.png  图片25.png  图片26.png

Characteristics
Steel rod type: B2,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 Ball:

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

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


0.020-0.050



Grinding Media Steel Ball 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 Ball)

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


0.020-0.050



Grinding Media Steel Ball 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: B3, Chemical Comments
     (Grinding Media Steel Ball)

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





Grinding Media Steel Ball Quality Performance

Ball Size

Surface Hardness

Core Hardness

Volume Hardness

Impact Toughness

60mm

61-63 HRC

59-61 HRC

59-62 HRC

≥14 J/CM2

70mm

61-63 HRC

59-61 HRC

59-62 HRC

≥16 J/CM2

80mm

61-63 HRC

59-61 HRC

59-62 HRC

≥18 J/CM2

90mm

61-63 HRC

59-61 HRC

59-62 HRC

≥20 J/CM2

100mm

60-62 HRC

58-60 HRC

58-62 HRC

≥22 J/CM2



Steel Rod Type: B3, Chemical Comments
     (Grinding Media Steel Ball)

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





Grinding Media Steel Ball Quality Performance

Ball Size

Surface Hardness

Core Hardness

Volume Hardness

Impact Toughness

120mm

60-62 HRC

58-60 HRC

58-62 HRC

≥24 J/CM2

125mm

60-62 HRC

58-60 HRC

57-61 HRC

≥26 J/CM2


Grinding Media Steel Ball 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27.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 Ball for mining:

图片28.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29.png

Advantages

1. Grinding media balls have higher level of hardness and better wear resistant property.

2.These forged steel grinding ball have no deformation and grinding resistant property.

3. Grinding media balls offered by us have wide size ranging from 25mm-125mm.

4. Due to sturdy construction of the grinding media ball , it is more robust.

5. We use high grade of raw material to produce high grade steel grinding ball.

6.These grinding media ball is more durable and have longer service life.

FAQ

Q: How to control the quality in your factory?

A: During Bulk Production, Every 2-3 Hours, Random pick 2-3 Ball Samples to Test Hardness For Recording, Make Sure Even Quality.

Q: Is your price competitive?

A: We only provide quality products. Of course, we will give you the best ex-factory price based on the best quality products and services.

Q: Is it possible to know that how are my products going on without visiting your company?

A: Yes. We will provide a detailed production plan and send a weekly report containing digital pictures and videos to show you the production process.

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