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  • 产品名称: Forged grinding ball for ball mill
  • 111: Applied fields of forged grinding balls: a) Mines; b) Cement plants; c) Power stations;

Forged grinding ball for ball mill

1) High Hardness: The surface hardness of forged and rolling balls is to 60-65 HRC and volume hardness is to 60-63 HRC

2) High Impact Toughness: The impact toughness is more than 12 J/cm2;

3) Low Broken Rate: The actual broken rate is not higher than 1%;

4) Even Wear-resistance: The loss of ball round rate is 50-300 g/ton.


Specification:

   Brand Material C Mn Si Cr P/S Ni
DT-1 50Mn 0.48-0.56 0.65-1.0 0.17-0.37 0.15max 0.035max 0.05max
DT-2 60Mn 0.57-0.65 0.70-1.1 0.17-0.37 0.25max 0.035max 0.05max
DT-3 65Mn 0.62-0.75 0.90-1.2 0.17-0.37 0.25max 0.035max 0.10max
DT-4 75MnCr(B2)

0.72-0.85

0.70-0.90 0.17-0.35 0.40-0.60 0.035max 0.15max
DT-5 B3 0.50-0.65 0.4-1.0 1.40-1.80 0.77-1.10 0.035max 0.15max
DT-6 45# 0.42-0.48 0.50-0.80 0.17-0.37 0.15max 0.035max 0.05max

 

Diameter, Diametrical tolerance, Weight, Impact toughness of our grinding balls

Nominal

diameter

(mm)

Diameteical

tolerance

(mm)

Weight of Single

of forging ball

in average

Number of piece of

One ton forging ball

in average

Surface

hardness

Impact

toughness

DIA 20

DIA 25

DIA 30

DIA 40

DIA 50

 

 

+2

-1

32

64

110

263

513

31250

15625

9090

3802

1949

55-65

≥12

DIA 60

DIA 70

DIA 80

DIA 90

DIA 100

 

 

+3

-2

888

1410

2104

2996

4110

 

1126

709

475

333

243

DIA 110

DIA 120

DIA 130

+4

-2

5457

7102

9030

182

140

110

DIA 140

DIA 150

+4

-3

11278

13871

88

72


1). Raw material:
All the material is qualified with certificate and made in the Chinese largest steel production enterprise.


2). Different steel specifications ccording to the clients's requirements.
Main Steel Material :C45 Steel;60Mn Steel;B2 Steel


3). Steel Cutting:
the steel bars should be cut into small pieces according to the size of steel balls required by the order.


4). Heating:
we use the electric furnace instead of the traditional coal stove, the biggest advantage is that all the steel bars can accept the most approriate temperature during the heating progress. It affect the hardness and toughness directly.


5). Hammer forging:
The raw material is forged to a certain deformation by the air hammer, when the compression ratio increased, the micro-structure become more compact so that the hardness and the toughness can be improved.


6). Heat treatment:
Both the water quenching heat treatment production line and our own temperature control technics are important.
We have mature production technicians responsible for the heat treatment process as we know this process affect the grinding balls performance directly.


7). Quality Control.
Raw material test before production
Hardness test Drop Test Impact Test Core pulling Test after production
SGS test before delivery
Certificate: ISO 9001:2008
 
Testing:
Quality control for each production shift (4hours/Shift);
Hardness, chemical elements and impact testing after production for each production shift;
SGS –third party testing before each delivery
 
Packing:
1. Bags:1000KG polypropylene bags which are highly resistant to UV rays and secure bag straps to reduce time  and effort in loading and unloading.
 
2. Drums:Recyeled drums can also be supplied. The drums have a removable lid and compression ring for secure storage.Drums are more efficient for some modes of transportation and can also be delivered on wooden pallets.

Key words : Forged grinding ball

 
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Contact us

Contact: Peter Yang
 

E-mail:peteryang@grindingballs.net.cn
Skype:yang.grindingballs@outlook.com
Mobile(Whatsapp):+86 13176006313

Contact: Nina Wong
 

E-mail:nina.wong@aliyun.com
WhatsApp:+86 15552536018