Low chrome cast grinding ball
|
Low chrome cast grinding ball
|
Card no.
|
Chemical analysis
|
|||||||
|
C
|
Si
|
Mn
|
Cr
|
P
|
S
|
Mo
|
AI
|
||
|
ZQCr
|
2.0-3.5
|
≤1.2
|
≤1.0
|
0.5-1.5
|
≤0.15
|
≤0.20
|
trace
|
trace
|
|
|
Cu
|
Ni
|
Nb
|
Ti
|
Zr
|
V
|
B
|
Mg
|
||
|
trace
|
trace
|
trace
|
trace
|
trace
|
trace
|
trace
|
trace
|
||
Mechanical properties and microstructure
|
Low chrome cast grinding ball
|
Card no. |
HRC
（HRC）
|
impact value
Ak(J/cm2)
|
The microstructure
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Falling ball impact fatigue life
|
|
ZQCr
|
≥45
|
≥1.6
|
P+C
|
＞5000
|
High chrome cast grinding ball
|
牌号Grade
|
chemical composition(%)
|
|||||||||
|
C
|
Si
|
Mn
|
Cr
|
P
|
S
|
Mo
|
Cu
|
Ni
|
||
|
ZQCr10
|
2.0-3.2
|
0.3-1.2
|
0.2-1.0
|
10-13
|
≤0.10
|
≤0.10
|
0-2.0
|
0-1.0
|
0-1.5
|
|
|
ZQCr17
|
2.0-3.0
|
0.3-1.2
|
0.2-1.0
|
15-18
|
≤0.10
|
≤0.10
|
0-2.0
|
0-1.0
|
0-1.5
|
|
|
ZQCr20
|
2.0-2.8
|
0.3-1.0
|
0.2-1.0
|
18-22
|
≤0.10
|
≤0.08
|
0-2.5
|
0-1.0
|
0-1.5
|
|
|
ZQCr26
|
2.0-2.8
|
0.3-1.0
|
0.2-1.0
|
22-28
|
≤0.10
|
≤0.08
|
0-2.5
|
0-2.0
|
0-1.5
|
|
|
硬度（HRC）
|
冲击值ak（J/cm2）
|
落球冲击值疲劳寿命（次数）Times of falling Balls
|
金相组织 Microstructure
|
|||||||
|
56-63
|
≥3.0
|
≥15000
|
M+C
|
|||||||
|
M-马氏体 Martensite C-碳化物 Carbide
|
||||||||||
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产品规格（mm）Specification
|
φ8
|
φ10
|
φ12
|
φ15
|
φ17
|
φ20
|
φ25
|
φ30
|
φ40
|
|
|
φ50
|
φ60
|
φ70
|
φ80
|
φ90
|
φ100 |
φ110
|
φ120
|
φ130
|
||
chromium in paragraph
|
chemical composition(%)
|
|||||||||||||||
|
C
|
Si
|
Mn
|
Cr
|
P
|
S
|
Mo
|
Cu
|
Ni
|
|||||||
|
1.7-3.2
|
0.3-1.2
|
0.2-1.0
|
10-13
|
≤0.10
|
≤0.10
|
0-3.0
|
0-1.0
|
0-1.5
|
|||||||
|
硬度（HRC）
|
金相组织 Microstructure
|
||||||||||||||
|
M-马氏体 Martensite C-碳化物 Carbide
|
|||||||||||||||
|
产品规格（mm）Specification
|
φ8×10
|
φ10×12
|
φ12×14
|
φ14×16
|
φ16×18
|
φ18×20
|
|||||||||
|
φ20×20
|
φ20×25
|
φ25×30
|
φ30×35
|
φ35×40
|
φ40×45
|
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