Casting Steel Ball

 

Casting steel balls are made of scrap steel as the main material, adding various alloying elements to melt into molten iron, and then pouring into molds. The most important component is chrome, which can be divided into low chrome casting balls, medium chrome casting balls and high chrome casting balls according to the different chrome content. Due to the production process, there are pouring ports and rings on the surface of cast steel balls. Cast steel balls are resistant to grinding and have uniform internal and external hardness. They are widely used in cement plants, aluminum power plants, mines, building materials and other industries.

ꁆ ꁇ
넳 넲

（1）Chemical Composition

 

Grade

C(%)

Mn(%)

Si(%)

Cr(%)

Ni(%)

Mo(%)

P(%)

S%

ZQCr0

3.2-3.8

0.5-3.5

2.0-3.0

0.2-1.5

-

0-1.0

≤0.10

≤0.06

ZQCr2

2.1-3.6

0.2-1.5

1.5max

1.0-3.0

-

0-1.0

≤0.10

≤0.06

ZQCr5

2.1-3.6

0.2-1.5

1.5max

4.0-6.0

-

0-1.0

≤0.10

≤0.06

ZQCr8

2.1-3.6

0.2-1.5

2.2max

7.0-10.0

-

0-1.0

≤0.10

≤0.06

ZQCr12

2.1-3.6

0.2-1.5

1.2max

10.0-14.0

≤1.0

0-1.0

≤0.10

≤0.06

ZQCr15

2.1-3.6

0.2-1.5

1.2max

14.0-18.0

≤1.0

0-1.0

≤0.10

≤0.06

ZQCr20

2.1-3.5

0.2-1.5

1.2max

18.0-23.0

≤1.0

0-1.0

≤0.10

≤0.06

ZQCr26

2.1-3.3

0.2-1.5

1.2max

23.0-30.0

≤1.0

0-1.0

≤0.10

≤0.06

 

（2）Technical Data

 

Grade

Diameter
（mm）

Hardness
（HRC）

Impact value
(J/cm²)

Drop times
(Times)

Breakage rate

Micro structure

ZQCr0

15-130

≥45

≥1.5

≥8000

≤1%

P+C

ZQCr2

15-130

≥45

≥1.5

≥8000

≤1%

P+C

ZQCr5

15-130

≥50

≥2.0

≥10000

≤1%

M+C

ZQCr8

15-130

≥58

≥3.0

≥12000

≤1%

M+C

ZQCr12

15-130

≥58

≥3.5

≥12000

≤1%

M+C

ZQCr15

15-130

≥58

≥5.0

≥12000

≤1%

M+C

ZQCr20

15-130

≥58

≥6.0

≥12000

≤1%

M+C

ZQCr26

15-130

≥58

≥7.0

≥12000

≤1%

M+C

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