General information of forged steel grinding ball
SAG mill balls experience both significant abrasive and impact wear due to their large (75 - 100 mm) diameters. Ball mill grinding steel balls experience a greater number of impacts, but at lower magnitude than SAG mill balls, due to the smaller ball size, and smaller mill diameter. Grindingsteel balls requires maximum abrasive wear resistance, with suitable toughness and impact resistance.
Therefore, our R & D team developed a type of grinding steel ball which release great perpormance for most ball mills, and a type of SAG balls which especially designed for the large-scale SAG mills.
These two types of grinding steel balls are rewarded good reputation and use experience from our clients, they also have moderate price.
Grinding ball info:
1. Grade: 45#,50Mn,60Mn,65Mn,B2,B3,BL,BG
2. Diameter: 15mm-150mm
3. Hardness: HRC 55-65
4. Breakage Rate:<0.5%
5. Impact Value: >12j/Cm^2
6. Falling ball times: ≥20000s
Forged grinding ball chemical composition:
| SPEC. | C | Mn | Si | S | P | Cr |
| SY-05-B2 | 0.75-0.85 | 0.70-0.90 | 0.17-0.35 | 0.035max | 0.035max | 0.40-0.60 |
| SY-06-B3 | 0.50-0.65 | 0.40-1.00 | 1.35-1.85 | 0.035max | 0.035max | 0.80-1.20 |
Hardness:
| me | Impact Value AK.J/cm2 | Dropping test(sm) | Hardness | |||||
| Ф25-50(1"-2") | Ф60-90(2.5"-3.5") | Ф100-150(4"-6") | ||||||
| Surface | Core | Surface | Core | Surface | Core | |||
| SY-05-B2 | ≥12 | ≥20,000 | ≥60 | ≥60 | ≥60 | ≥54 | ≥55 | ≥48 |
| SY-06-B3 | ≥14 | ≥20,000 | ≥60 | ≥60 | ≥60 | ≥56 | ≥58 | ≥54 |
Grinding ball data:
NOMINAL DIAMETER(mm)(INS) | DIAMETRICAL TOLERANCE(mm) | APPOX AVERAGE WEIGHT PER BALL | AVERAGE NUMBER OF BALLS PER MT |
20 4/5 25 1 30 11/4 40 11/2 |
+2 -1 | 32 64 116 263 | 31250 15625 8620 3802 |
50 2 60 21/2 70 23/4 80 31/4 |
+3 -1 | 513 888 1490 2104 | 1949 1126 671 475 |
90 33/4 100 4 110 41/2 120 5 130 51/4 140 51/2 150 6 |
+4 -2 | 2996 4110 5070 7102 9030 11278 13872 | 334 243 183 141 111 89 72 |
1.We only purchase directly from large regular steel groups in China;
2.10 advanced automatic production lines with an annual output of 100,000t. Covering the specifications of DIA15-150 mm and all materials to meet customers' different requirements. All of the operators are well trained and have more than 5 years of experience in forging ball manufacturing;3.Unique complex heat treatment make sure that our steel balls obtain better performance in the volume hardness uniformity and the overall wear resistance;
4.World-class laboratory and complete test equipment enable us to make tests of chemical elements, mechanical properties, microstructure and so on;
5.We have passed international and industrial certifications such as TUV ISO900, ISO14001, Iso45001, etc and also passed the double certification of SGS and BV as qualified factories.
