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Polybasic Alloyed Casting Balls

Product Applications:
The application of grinding steel balls is ultrafine powder preparation and processing.
They are widely used in cement building materials, metal mine, coal slurry thermal power, chemical, ceramic material, light paper making, magnetic materials and many other industries. The main advantages of the balls are with high hardness and tenacity, low abrasion and less crush.

Production Process:
Raw Material→ Cutting→ Stove → Forging→ Transfer Machine → Quenching → Heat Treatment → Dimension Test → Hardness Test → Packing → Transportation

Main Specification and Technology

Specification
Diameter(mm)
10 12.7 15 17 20 25 30 40 50 60 70 80 90 100 110 120 125 130
Name Chemical Composition
C Si Mn Cr Mo Cu Ni Nb Ti Zr V B P S
polybasic I 1.8-3.2 0.5-1.5 0.3-1.5 3.2-7.0 ≤0.5 ≤0.8 ≤0.5 ≤0.2 ≤0.5 ≤0.5 ≤0.5 ≤0.1 ≤0.1 ≤0.1
polybasic II 1.8-3.2 0.5-1.5 0.3-1.5 7.0-10 ≤0.5 ≤0.5 ≤0.5 ≤0.2 ≤0.5 ≤0.5 ≤0.5 ≤0.1 ≤0.1 ≤0.1
Properities and Microstructure
Name Hardness Hardness Microstructure Time of Falling balls
polybasic I 48-56 ≥3.0 P+C < φ80 ≥13000
≥ φ80 ≥16000
polybasic II 50-62 ≥3.5 M+C < φ80 ≥15000
≥ φ80 ≥15000
Specification and Avoirdupois
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

Packing
(1) Container Bags: 1000KGS/Bag
(2) Steel Drums(with Pallet): 850-900KGS/Drum
(3) According to the demands of clients

Advantages
1. High hardness and good wear resistance
2. Strong toughness and unbreakable
3. Regular outer shape, keeping a round shape without deformation
4. Light weight and energy saving and environmental protection

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