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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

Forged Steel Grinding Media Balls

Forged Steel Grinding Media Balls Introduction DONGBANG brand forged steel grinding media balls, promise you high and even volume hardness, strong impact toughness and breaking rate less than 0.3% during bulk use. Technical Datas Application: 125mm Forged Steel Grinding Media Balls for Iron ore...

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Forged Steel Grinding Media Balls Introduction
DONGBANG brand forged steel grinding media balls, promise you high and even volume hardness, strong impact toughness and breaking rate less than 0.3% during bulk use.
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Technical Datas
Application: 125mm Forged Steel Grinding Media Balls for Iron ore mine, Gold Mine, Copper Mine, Silver Mine, etc. 

Certification: ISO9001, ISO14001, OHSAS18001 etc.
Original: Jiangsu, China
Price: Negotiable

Raw Meterial

Finished Ball Size

Single Ball Weight

Steel rod, 80mm

125-126mm

7800-8000 grams

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)
How we make 125mm Forged Steel Grinding Media Balls ?
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Detailed explainations on above production flow on 125mm Forged Steel Grinding Media Balls:
1.Use step up heating furnace or induction furnace to heat on 80mm Dia steel rod;
2.Hot cutting machine cut the heated steel rod to fixed length we request;
3.Use magic hand to pick up cutted hot steel rod piece and feed to quick hammer machine;
4.Quick hammer machine hammer the cutted steel rod to a ball shape;
5.Use rolling machine to get round and smooth ball surface;
6.Cool the ball, then send into reheating furnace to reheat on ball to organize the microstructure of the steel ball;
7.Reheated ball will do the quenching treatment after cool to requested temperature;
8.The ball after quenching treatment, will send into tempering furnace, it will take 12 hours to finish the entire tempering progress on 125mm balls for complete stress relief;
9.Tempered ball will cool to room temperature on cooling plate, then do the export packing upon client’s request.
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What is the quality of your 125mm Forged Steel Grinding Media Balls ?
Choice 1#:

                                                                                  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





125mm(5”) Forged Steel Grinding Media Balls Quality Parameter

Ball Size/Steel rod type

Surface Hardness

Core Hardness

Volume Hardness

Impact Toughness

125mm/B3

60-62 HRC

57-60 HRC

56-62 HRC

≥28 J/CM2

Choice 2#:

                                                                                  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


125mm(5”) Forged Steel Grinding Media Balls Quality Parameter

Ball Size/Steel rod type

Surface Hardness

Core Hardness

Volume Hardness

Impact Toughness

125mm/B3

61-63 HRC

58-60 HRC

57-62 HRC

≥24 J/CM2

Choice 3#:

                                                                                  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



125mm(5”) Forged Steel Grinding Media Balls Quality Parameter

Ball Size/Steel rod type

Surface Hardness

Core Hardness

Volume Hardness

Impact Toughness

76mm/B3

61-63 HRC

57-60 HRC

59-62 HRC

≥28 J/CM2

If you have special quality request on 125mm steel ball for SAG ball mill, Please tell me, I am happy to develop the best 125mm steel ball upon your unique request. 


Quality control
1. Checking raw material before producing.
2. Testing production to find best bulk production method.  
3. Quality checking 3-4 times during production per shift.
4. Have the random inspection before the delivery.

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