High Strength Steel Grinding Balls for ball mill / Power Plant Grinding Media Balls manufacturer from China Oriental Casting and Forging Co., Ltd.

High Strength Steel Grinding Balls for ball mill / Power Plant

Place of Origin:

Shandong, China (Mainland)


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Product Detail

Model No.: Grinding Media Balls

High Strength Grinding steel balls for ball mill / Powe

High Strength Grinding steel balls for ball mill / Power Plant

Breif Description:
Size: 20-150mm Inspection: SGS/BV/TUV
Origin: Shandong Province, China
Packing: 1000kgs per bag or 900kgs per steel drum

Material	Chemical Elements
Material	C	Si	Mn	P/S	Cr	Hardness (HRC)
45#	0.42-0.50	0.17-0.37	0.5-0.8	<0.035	<0.25	60-65
60MN	0.55-0.65	0.17-0.37	0.7-1.0	<0.04	<0.25	58-63
B2	0.72-0.85	0.17-0.37	0.7-1.0	<0.04	0.4-0.6	55-58
B3	0.5-0.8	1.0-1.8	0.4-1.0	0.035	0.5-1.0	56-63

Nominal diameter

(mm)

Diametrical tolerance

(mm)

Weight of Single

of grinding ball

in average

Number of piece of

One ton grinding ball

in average

Impact

toughness

DIA 20MM

DIA 25 MM

DIA 30 MM

DIA 40 MM

DIA 50 MM

-1

110

263

513

31250

15625

9090

3802

1949

≥12

DIA 60 MM

DIA 70 MM

DIA 80 MM

DIA 90 MM

DIA 100 MM

-2

888

1410

2104

2996

4110

1126

709

475

333

243

DIA 110 MM

DIA 120MM

DIA 130 MM

-2

5457

7102

9030

182

140

110

DIA 140 MM

DIA 150 MM

-3

11278

13871

The production process of the forged grinding balls
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);