Features:
1. High wear-resisting: The alumina balls’ wear resisting is higher than the common ceramic balls’. When it is working, the ball will not pollute the grinded materials, so it can keep the purity and improve the stability of grinded materials especially the ceramic glaze.
2. High density: the high density, high hardness and the high grinding
Characters save the grinding time, enlarge the smashing room. So
It can improve the grinding efficiency.
Index for alumina grinding balls:
|
|
75 series
|
85 series
|
90 series
|
92 series
|
95 series
|
|
Al2O3(﹪)
|
≥75
|
≥85
|
≥90
|
≥92
|
≥95
|
|
Fe2O3(﹪)
|
≤0.5
|
≤0.2
|
≤0.01
|
≤0.01
|
≤0.01
|
|
Moh’s hardness
(scale)
|
8
|
8
|
9
|
9
|
9
|
|
Water absorption
(%)
|
≤0.02
|
≤0.02
|
≤0.02
|
≤0.02
|
≤0.02
|
|
Density(g/cm3)
|
≥3.27
|
≥3.50
|
≥3.55
|
≥3.60
|
≥3.65
|
|
Abrasion loss
(%)
|
≤0.20
|
≤0.20
|
≤0.20
|
≤0.15
|
≤0.10
|
Specification:
|
Size
|
75 series
|
85 series |
90 series |
92 series |
95 series |
|
Φ1-Φ15(mm)
|
±0.5
|
±0.5
|
±0.5
|
±0.5
|
±0.5
|
|
Φ16-Φ25(mm)
|
±1
|
±1
|
±1
|
±1
|
±1
|
|
Φ30-Φ40(mm)
|
±1.5
|
±1.5
|
±1.5
|
±1.5
|
±1.5
|
|
Φ50-Φ60(mm)
|
±2
|
±2
|
±2
|
±2
|
±2
|
|
Φ70-Φ80(mm)
|
±3
|
±3
|
±3
|
±3
|
±3
|
|
Φ90(mm)
|
±3.5
|
±3.5
|
±3.5
|
±3.5
|
±3.5
|