Top quality Dia 4" forged steel grinding balls used in ball mills
Breif Description:
(a) Low breakage(below1‰) .
(b) Good proportion and structure.
(c)Low consumption and High in the density.
(d)impact toughness:more than 12J/CM².
(e)Sizes of Grinding Balls:(17mm-150mm).
(f)Wear-resisting performance is good.
(g) Others size according customer requirement.
(h)The abrasion just for reference ,the exa abrasion depends on the specific mine ore.The ball mill and other conditions
Chemical composition:
| Material | C | Mn | Si | Cr | S | P |
| 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 |
| 75SiMn | 0.70-0.90 | 0.7-1.2 | 0.4-0.8 | 0.25 max | 0.03 max | 0.03 max |
Specifications:
|
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 |
