Dia 15mm high hardness cast iron grinding media for ball mill
Dia 15mm high hardness cast iron grinding media for ball mill
Dia 15mm high hardness cast iron grinding media for ball mill

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Dia 15mm high hardness cast iron grinding media for ball mill

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Model No. : Dia 8-150mm
Brand Name : Taihong

Product description

Specifications high hardness cast iron grinding media for ball mill:

1) High hardness

2) Low breakage

3) Good wear-resistant

high chrome alloyed grinding balls:   1.Chemical composition    

Item

C

Cr

Si

Mn

S

P

Cu

Mo

Hardness

Low Chrome

1.8-3.5

1-3.5

≤1.2

≤1.5

≤0.15

≤0.15

≤0.5

≤1.0

≥45

Medium Chrome

1.8-3.3

4-9

≤1.2

≤1.8

≤0.15

≤0.15

≤1.0

≤1.5

≥50

High Chrome

1.6-3.3

10-15

≤1.0

≤2.5

≤0.10

≤0.10

≤1.5

≤1.0

≥55

Higher Chrome

1.6-3.3

15-18

18-27

≤1.0

≤2.5

≤0.10

≤0.10

≤1.5

<2.0

≥60

  2. Specification  

No.

Diameter

(mm)

Weight of each

(kg)

Pcs/ton

1

Ø10

0.0135

74073

2

                  Ø12

0.0181

55248

3

Ø15

0.0242

41322

4

Ø20

0.0322

31056

5

Ø25

0.063

15873

6

Ø30

0.11

9091

7

Ø40

0.257

3891

8

Ø50

0.50

2000

9

Ø60

0.867

1153

10

Ø70

1.37

729

11

Ø80

2.05

487

12

Ø90

2.90

345

13

Ø100

4.00

250

14

Ø110

5.30

188

15

Ø120

6.80

147

16

Ø125

7.75

129

17

Ø130

8.74

114

  3. Product Description  

Model

Mechanical properties

Microstructure

HRC

Times of falling (3.5m)

Low Chromium

≥45

≥8000

P+C

Medium Chromium

≥50

≥12000

P+C

High Chromium

≥55

≥15000

M+C

Higher Chromium

≥60

≥22000

M+C

     4. Features
1) High hardness and resistance
2) Good even wear
3) No breaking
5. Applied fields
1) Mining
2) Cement plants
3) Power stations
4) Chemical industry and machinery 6. Production Process     The production of casting steel balls is to melt the waste raw material such as waste steel, waste iron with medium frequency induction furnace. In the process of melting, add suitable amount of precious metal alloys(such as Ferrochrome, ferromanganese, ferro-vanadium ) to the furnace. When the temperature of the molten iron is more than 1550°C and can meet the requirements of the technics,pour the qualified molten iron to steel moulds or steel production line moulds. The content of chrome of high chrome alloy casting steel balls is ≥10.0%, the content of carbon is 1.80%-3.20%.      Since the national standards require the HRC≥58, ak≥3.0J/cm2, to up to this hardness, the high chrome balls must be quenched and tempered. After quenched and tempered, the hardness(HRC≥60) is higher, the wear-resistance is more than 2.5 times of forging balls.   7. Production Technics     Raw material(waste steel,waste iron,iron alloy)factory inspection→blending→melt→composition inspection→casting→cooling and solidification→demould→clean and polish→inspection→quenching(increase hardness)→hardness inspection→tempering(eliminate stress)→inspection→warehousing      
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