- Abrasives[10]
- Mining Machinery Parts[10]
- Cast & Forged[10]
Feifan High wear resistance grinding ball for mines,cement plants
High Hardness And Shock Value,Low Brakage rate , Permanent In
Shape
impove communition and flotation productivity
CHEMICAL COMPOSITION
High quality carbon round steel rods and hot rolled (or continuous casting) round steel rods are used as material of hot rolled grinding media balls. The diameter of round steel rods should be equal to the nominal diameter of hot rolled grinding media balls. Normally, the length of each round steel rod is 6M.
Chemical Composition of steel rods used in our company is as follows:
C: 0.42-0.90% | Si: ≤2.0% |
Cr: ≤3.5% | Mo,v ,Ti ,Cu: ≤0.5% |
Ni: ≤0.5% | P:≤0.050% |
Mn:≤2.0% | S: ≤0.050% |
We could adjust the above chemical composition according to users’ specific requirements, and balls of specific types of steel appointed by users could be produced as well.
MECHANICAL PROPOERTIES
Microstructure | Impact Toughness (J/cm2) | Average Volumetric Hardness (HRC) | Dropping times without Breakage |
M+C | ≥ 12 (Different according to ball size) | 60-65 | ≥ 20000 |
M – Martensite C – Carbide | |||
DIMENSION SERIES
Nominal diameter (mm) (ins) | Theoretical diameter (mm) | Approx. Mass per Ball (g) | Average number of Balls per MT | Diametrical tolerance (mm) | |
20 | ¾ | 20.8 | 37 | 27,000 | ±1.5 |
25 | 1 | 26.0 | 72 | 13,900 | +1.5 -2.0 |
30 | 1¼ | 31.2 | 125 | 8,000 | |
40 | 1½ | 41.6 | 296 | 3,380 | +1.5 -2.5 |
50 | 2 | 52.0 | 578 | 1,730 | |
60 | 2½ | 62.4 | 999 | 1,000 | |
65 |
| 67.6 | 1,270 | 790 | +1.5 -3.5 |
70 | 2¾ | 72.8 | 1,586 | 630 | |
80 | 3¼ | 83.2 | 2,367 | 420 | |
90 | 3½ | 88.4 | 2,839 | 350 | +1.5 -4.5 |
100 | 4 | 98.8 | 3,964 | 250 | |
125 | 5 | 124.8 | 7,989 | 125 | +1.5 -5.5 |
140 | 5½ | 138.0 | 10,108 | 98 | |
150 | 6 | 153.0 | 13,865 | 72 | |
