Product Description :
Alumina grinding balls dry grindingaremade of imported low-sodium microcrystalline alumina powder. With high density, high hardness, high wear-resistance, good shock resistance, good corrosion resistance, no pollution to grinded the material,alumina dry grinding ballsarethe most ideal ball mill grinding media for grinding Powder, resin, ceramics, miningsuch as quartz sand, aluminum oxide powder, corundum, lithium feldspar etc.It can keep the purity and improve the stability of the grinded materials.
Chemshun Dry Grinding Ball Advantage :
-- Advantage of Raw Material :
Imported low-sodium microcrystalline alumina powder.
--- Advantage of Press Process :
①Using a 2000tonsdry bag isostatic press, the molding pressure is transmitted and distributed more evenly;
②80-100MPa high-pressure pressinghas strong pressure penetration and high green density consistency, which solves the problem of large internal wear caused by lowpressure and low internal density of the ballin traditional pressingmethods;
③The spherical roundness is high (<2mm) and theprotrusion is small, which solves the problem of the ball is not resistant to impact due to theover-sizedspherical protrusion of the traditional pressing method.
--- Advantage ofSinteringProcess
①Intelligent temperature-controlled shuttle kiln has a high degree of automation, the firing temperature rise rate can be adjusted according to product quality requirements,anditis highly flexible;
②The firing time is long, and the unique firing process achieves a small temperature difference (±5°C), more uniform heating, more transparent sintering, and good porcelain consistency.
Technical Data :
Item | Properties | Unit | Chemshun Value |
1 | Al2O3 | % | 92-93.5 |
2 | Density | g/cc | 3.65±0.05 |
3 | Moh’s hardness | Scale | 9 |
4 | Rockwell hardness | HRA | 87 |
5 | Water Absorption | % | ≤0.01 |
6 | Self abrasion（24h） | % | ≤0.1‰ |
7 | Color | white | |
8 | Dimension | mm | 30,40,50,60,70 |
CHEMSHUNImpact and Abrasion Test Methods
--ImpactResistancedrop test
Fully-automatic impact resistance testing equipment:
①Impact resistance test under simulated working conditions: a free fall height of 3.5 meters, and the balls impact each other solidly;
②Method: 10 balls in a group, dropped cyclically, 10 times in one cycle, 60 cycles of impact, and calculatedbreakagerateof balls;
③Standard: Only small piecesof ball surfaceare allowed to fall off .
The number of damaged items after 60 cycles is ≤2 ( as an internal testing standard ).
---Wear loss test
Take 4kg dry grinding ball and weigh the net weight, pour it into the test grinding jar, pre-grind for half an hour to remove surface impurities, clean and dry, weigh M1,
Pour it into the test grinding jar, add grinding sand (corundum sand), and dry grind together After 24 hours, wash and dry, and weigh M2.
W(wear loss)=1000*（M1-M2）/（M1*24）
Chemshun Dry Grinding Balls Features :
1)Highabrasionresistance
2) Highfracturetoughness
3) Highcorrosionresistance
4) Highhardness
5) Highgrindingefficiency
6) Lowwearloss
7) Smoothsurface
8) Nopollutiontogrindedthematerial
9) Specialprocessproductionfordrymillenvironment
Chemshun Balls Inspection :
1)Grinding balls Size Inpection 2) Balls Surface Inspection
Package :
