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Specifications
High Hardness Grinding Steel Media1. High hardness
2. Good wear resistance
3. High toughness
4 .Low breakage
High Hardness Grinding Steel Media
Specification:
1.Chemical composition:
Name |
C |
Mn |
Si |
Cr |
S |
P |
V |
50MN |
0.48-0.56 |
0.70-1.0 |
0.17-0.37 |
0.25 max |
0.035max |
0.035max |
|
60MN |
0.57-0.65 |
0.70-1.0 |
0.17-0.37 |
0.25 max |
0.035max |
0.035max |
|
65MN |
0.60-0.70 |
0.90-1.20 |
0.17-0.37 |
0.25 max |
0.035max |
0.035max |
|
75Mn |
0.72-0.92 |
0.17-0.37 |
0.7-1.0 |
0.4-0.6 |
0.035max |
0.035max |
|
75MnCr |
0.70-0.85 |
0.7-0.8 |
0.17-0.37 |
0.2-0.7 |
0.03 max |
0.03 max |
|
75 SiMn |
0.70-0.90 |
0.7-1.2 |
0.4-0.8 |
0.25 max |
0.03 max |
0.03 max |
|
Wear-resistant Alloy |
0.5-0.65 |
0.4-1.0 |
1.4-1.8 |
0.9-1.2 |
0.03 max |
0.03 max |
0.1-0.2 |
Name |
Impact Test AK.J/cm2 |
Endurance Test Times (5m) |
Dia 25mm-60mm |
Dia 70mm-100mm |
||
Surface |
Core |
Surface |
Core |
|||
50MN |
≥12 |
≥10000 |
≥56 |
≥35 |
≥56 |
≥28 |
60MN |
≥13 |
≥10000 |
≥58 |
≥38 |
≥58 |
≥29 |
65MN |
≥15 |
≥12000 |
≥60 |
≥42 |
≥60 |
≥30 |
75MnCr |
≥17 |
≥12000 |
≥60 |
≥52 |
≥60 |
≥50 |
75 SiMn |
≥16 |
≥12000 |
≥60 |
≥50 |
≥60 |
≥48 |
Wear-resistant Alloy |
≥17 |
≥12000 |
≥60 |
≥54 |
≥60 |
≥52 |
2.Specification and Hardness of Grinding Ball
|
Nominal diameter (mm) |
Diameteical tolerance (mm) |
Weight of Single of forging ball in average |
Number of piece of One ton forging ball in average |
Surface hardness |
Impact toughness |
|
DIA 20 DIA 25 DIA 30 DIA 40 DIA 50 |
+2 -1 |
32 64 110 263 513 |
31250 15625 9090 3802 1949 |
55-65 |
≥12 |
|
DIA 60 DIA 70 DIA 80 DIA 90 DIA 100 |
+3 -2 |
888 1410 2104 2996 4110
|
1126 709 475 333 243 |
||
|
DIA 110 DIA 120 DIA 130 |
+4 -2 |
5457 7102 9030 |
182 140 110 |
||
|
DIA 140 DIA 150 |
+4 -3 |
11278 13871 |
88 72 |
3.Features:
(1) Characteristics:
a) High hardness and resistance
b) Good even wear
c) No breaking
(2) Applied fields:
a) Mines
b) Cement plants
c) Power stations
d) Chemical industry
4.Manufacturing Process Of Cast Iron Grinding Balls
1).Raw material
2).Melting
3).Pouring
4).Polishing
5).Heat treatment
6).Testing
7).Qualified products (ISO CERTIFICATE)
8).Packing (steel drum,flexible container bags)
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