Loading Port:China Main Port
Payment Terms:TT or LC
Min Order Qty:25M.T. m.t.
Supply Capability:200000M.T./Year m.t./month
1.Chemical Composition of Media Ball made by High Hardness and Top Quality Steel apply for Copper Mineral Industory and Power Plant
Material | C | Mn | Si | Cr | S | P | |||
60Mn | 0.57-0.65 | 0.70-1.0 | 0.17-0.37 | 0.25max | 0.035max | 0.035max | |||
65Mn | 0.60-0.70 | 0.90-1.2 | 0.17-0.37 | 0.25max | 0.035max | 0.035max | |||
75MnCr | 0.70-0.85 | 0.70-0.85 | 0.17-0.37 | 0.40-0.60 | 0.030max | 0.030max | |||
Specification of Forged Steel Grinding Balls | |||||||||
Nominal diameter | Diametrical Tolerance | Weight of single ball in average | Surface hardness | Impact toughness | |||||
(mm) | (mm) | (g) | (HRC) | (j/cm2 ) | |||||
Φ20 | +2 -1 | 32 |
55-65 |
≥12 | |||||
Φ25 | 64 | ||||||||
Φ30 | 110 | ||||||||
Φ40 | 263 | ||||||||
Φ50 | 513 | ||||||||
Φ60 | +3 -2 | 888 | |||||||
Φ70 | 1410 | ||||||||
Φ80 | 2104 | ||||||||
Φ90 | 2996 | ||||||||
Φ100 | 4110 | ||||||||
Φ110 | +4 -2 | 5457 | 50-60 | ||||||
Φ120 | 7102 | ||||||||
Φ130 | 9030 | ||||||||
Φ140 | +4 -3 | 11278 | |||||||
Φ150 | 13871 | ||||||||
2. Hardness of Media Ball made by High Hardness and Top Quality Steel apply for Copper Mineral Industory and Power Plant
| | 1A | 2A | 3A | 45 | 65 |
Superficial | >60HRC | >60HRC | >60HRC | >58HRC | >60HRC |
Volumetric | >58HRC | >60HRC | >60HRC | >55HRC | >60HRC |
3.Feature of Media Ball made by High Hardness and Top Quality Steel apply for Copper Mineral Industory and Power Plant
1) In general, grinding steel ball has high hardness: surface hardness to 58-65 HRC, volume hardness of 56-65 HRC
2) impact toughness high: impact toughness more than 12 J / cm2.
3) broken rate is low: the actual broken rate is not higher than 0.5%.
4) loss of grinding forged steel ball round rate is low.
