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EO Technology Co., Ltd.

High Chrome Grinding Media Balls for Cement Mills

High Chrome Grinding Media Balls for Cement Mills

High Hardness: Surface hardness of casting iron balls is to HRC 45-65.
Good Impact Toughness: Impact toughness of chrome balls is more than 3J/cm²;
Low Broken Rate: The actual broken rate is not higher than 1%;
Good Wear-resistant: 30-50g/ton in cement industry, 350-430g in gold mines

Product Details

High Hardness: Surface hardness of casting iron balls is to HRC 45-65.
Good Impact Toughness: Impact toughness of chrome balls is more than 3J/cm²;
Low Broken Rate: The actual broken rate is not higher than 1%;
Good Wear-resistant: 30-50g/ton in cement industry, 350-430g in gold mines


EO CASTINGS grinding balls are widely used in mining, power plant, cement and magnetic materials industries.
In the using process, the surface hardness getting higher and the wear resistant getting strengthen, at the same time, the production capacity of ball mill getting improved.


Products Specifications

Common Names

Grinding Balls
  High Chromium Steel Balls
  Wear Resistant Steel Balls

Main Materials

High Chromium Castings

Chemical Composition(%)

Designation

    C

 Si

Mn

Cr

Mo

P

S

ZQCr26

2.0-2.8

≤1.0

≤1.5

22-28

≤1.0

≤0.10

≤0.08

ZQCr20

2.0-2.8

≤1.0

≤1.5

18-22

≤1.5

≤0.10

≤0.08

ZQCr17

2.0-3.0

≤1.0

≤1.5

15-18

≤1.5

≤0.10

≤0.08

ZQCr13

2.0-3.2

≤1.0

≤1.5

10-15

≤1.5

≤0.10

≤0.08


Properties and Microstructure

Designation

HARDNESS(HRC)

ak(J/cm²)

Microstructure

Time of Falling Balls

A

B

ZQCr26

≧56

≧45

≧3.0

M+C

≧8000

ZQCr20

≧56

≧45

≧3.0

≧8000

ZQCr17

≧56

≧45

≧3.0

≧8000

ZQCr13

≧56

≧45

≧2.5

≧8000


Diameter Tolerance(mm)

Φ8

Φ10

Φ12

Φ15

Φ17

Φ20

Φ25

Φ30

Φ40

Φ50

Φ60

Φ70

Φ80

Φ90

Φ100

Φ110

±0.5

±1

±1.5

+2,-1

NOTE: If modulating needed, metamorphic chemical ingredients&other alloying elements vary from products above, price would be as contract signed.


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