Dia 100mm Grinding Ball for Ball Mill /Forged and Cast Steel Ball
Breif Description:
We, Shandong Oriental Casting And Forging Co., Ltd, mainly produce grinding media for many years, with the strength of forged steel ball, cast steel ball, grinding rod and steel cylpeb. And all of our products strictly according to the ISO9001-2008 Quality Standard.
High Hardness: The surface hardness of forged and rolling balls is to 60-65 HRC and volume hardness is to 60-63 HRC
High Impact Toughness: The impact toughness is more than 12 J/cm2;
Low Broken Rate: The actual broken rate is not higher than 1%;
Even Wear-resistance: The loss of ball round rate is 50-300 g/ton.
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 |
| 60MN | ≥13 | ≥10000 | ≥58 | ≥38 | ≥58 | ≥29 |
| 65MN | ≥15 | ≥12000 | ≥60 | ≥42 | ||
