Specifications
1.Chrome Grinding Ball Dia17-150MM2.Even hardness
3.Grinding resistant
4.High impact value
5.High combined efficiency
Low Chrome Cast Steel Balls Grinding Media
1.Features of Cast Grinding Balls
1) In general, casting grinding ball has high hardness: surface hardness to 55-68 HRC, volume hardness of 53-63 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 1%.
4) loss of grinding forged steel ball round rate is low
2.Material and Chemical Composition of Casting Grinding Ball
Name | Model | Material | C | Si | Mn | Cr | S | P |
TITLE-8 | High Chrome | Cr-22-32% | 2.0-2.8 | ≤1.0 | 0.5-2.0 | 22-32 | ≤0.06 | ≤0.08 |
TITLE-9 | Cr-17-22% | 2.0-2.8 | ≤1.0 | 0.5-2.0 | 17-22 | ≤0.06 | ≤0.08 | |
TITLE-10 | Cr-14-17% | 2.2-3.0 | ≤1.0 | 0.5-2.0 | 15-17 | ≤0.06 | ≤0.08 | |
TITLE-11 | Cr-10-14% | 2.2-3.2 | ≤1.0 | 0.5-2.5 | 11-14 | ≤0.06 | ≤0.08 | |
TITLE-12 | Medium Chrome | Cr-5-10% | 2.1-3.2 | ≤1.2 | 0.5-1.5 | 5-10 | ≤0.06 | ≤0.08 |
TITLE-13 | Low Chrome | Cr-1.0-5% | 2.2-3.5 | ≤1.2 | 0.5-1.5 | 1.5-3 | ≤0.06 | ≤0.08 |
3.Physical Property of Casting Grinding Ball
Model | Hardness(HRC) | Impact Test(Ak.J/cm2) | Endurance Test Times(5m) | Microstructure | |
Quenching | Unquenching | ||||
High Chrome | ≥60 | ≥50 | ≥4 | ≥12000 | M+C |
Medium Chrome | - | ≥48 | ≥3 | ≥10000 | P+C |
Low Chrome | - | ≥46 | ≥2 | ≥8000 | P+C |
4. Specification of Cast Grinding Balls
Nominal Diameter | Diameter Tolerance | Weight of Single Ball In Average | Numbers of Per Ton Ball In Average | |
(mm) | (Inch) | (mm) | (g) |
|
20 | 0.75’’ | +2 -1 | 32 | 31250 |
25 | 1’’ | 64 | 15625 | |
30 | 1.25” | 110 | 9090 | |
40 | 1.5’’ | 263 | 3802 | |
50 | 2’’ | 513 | 1949 | |
60 | 2.5’’ | +3 -2 | 888 | 1126 |
70 | 2.75 | 1410 | 709 | |
80 | 3.25’’ | 2104 | 475 | |
90 | 3.5’’ | 2996 | 333 | |
100 | 4’’ | 4110 | 243 | |
110 | 4.5’’ | +4 -2 | 5457 | 182 |
120 | 4.75’’ | 7102 | 140 | |
130 | 5’’ | 9030 | 110 | |
140 | 5.5’’ | +4 -3 | 11278 | 88 |
150 | 6’’ | 13871 | 72 | |
5.High chrome cast balls
Size: 20mm-120mm
Hardness:HRC58-65; Chrome content:11-14%
6.Low chrome cast balls
Size: 20mm-120mm
Hardness:HRC45-55; Chrome content:1-3.5%
7.Main Process of Casting Grinding Balls
(1)Raw material (2)Scientific Proportioning (3)Electric Furnace Smelting (4)Assay Before Furnace (5)Mould Forming (6)Polishing (7)Heat Treatment (8)Qualified Products (9)Packing
8.Applied Field
1)Cement Plants 2)Mines 3)Power stations 4)Chemical Industries 5)Grinding Mill, Ball mill, Coal mill
9. Products Name
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10.Packing
(1)Container Bags
(2)Steel Drums
11. Photos of Products, Factory, Raw materials, Cutting Material, Processing Line, Testing, Packaging