Alumina Grinding Ball are superior grade grinding media, made of best quality raw materials and processed by dry forming process and sintered in high temperature tunnel kilns. It is available with features such as high density, high hardness, minimum wear rate, good resistance to vibration and corrosion. These are ideal for grinding medium for glazes, greenware and other mineral powders.
Pressed balls: φ30-φ120
Rolled balls: Φ0.5, Φ1.0, Φ2, Φ3, Φ6, Φ8, Φ10, Φ13, Φ20, Φ25, Φ30, Φ40
Cylindrical balls: φ20*20, φ25*25, φ30*30, φ40*40, φ50*50, φ60*60
| Product Name | 75%Alumina Grinding Ball | |||
| Testing standards | JC/T 848.1-2010 | |||
|
Laboratory environment |
25℃,60%RH | |||
| Primary Index |
Serial number |
Item | measured value | |
| 1 | Al2 O3 ( % ) | 74.32 | ≥70 | |
| 2 | Fe2 03 ( ) | 1.30 | ≤2 | |
| 3 |
Loss of wearing (%) |
0.113 | ≤0.30 | |
| 4 |
Water absorption rate(%) |
<0.01 |
≤0..0 2 |
|
| 5 |
Bulk density (g/m3) |
3.26(g/m3) | ≥2.95 | |
| 6 | Rockwell hardness | 8 | ≥8 | |
| 7 | Sphericity | 1±0.03 |
1±0.0 4 |
|
|
item |
Performance Index |
|
Alumina content |
≥92% |
|
alumina(%) |
≥92 |
|
Fe2O3 (%) |
≤0.25 |
|
Rockwell hardness |
80-90HRA |
|
Compressive strength |
≥850MPa |
|
Bulk density（g/m3） |
≥3.60 |
|
Water absorption rate（%） |
≤0.02 |
|
KIC Fracture toughness |
≥4.8MPa·M1/2 |
|
Bending strength |
≥290MPa |
|
Thermal conductivity |
20 watts per metre |
|
Coefficient of thermal expansion |
7.2×10-6m/×mk |
|
Loss of wearing（%） |
≤0.15 |
Shandong Qishuai Wear-Resistant Equipment Co., Ltd.'s Alumina Grinding Ball boast remarkable mechanical properties. Their exceptional hardness, with a Mohs hardness rating of 9, is surpassed only by diamond, nature's hardest substance. This extraordinary hardness endows with a distinct advantage when operating in high-wear environments.
Abrasion resistance: Several times, or even dozens of times, that of ordinary metallic materials. During prolonged high-speed rotation and intense friction, wear is minimal, enabling consistent shape and dimensional stability. This ensures precision and stability in grinding, dispersion, and other processes, thereby guaranteeing product quality consistency.
Compressive strength: Can withstand huge pressure without deformation and fracture.Stable operation and reliable performance in the industrial production with high pressure.
Heat resistance: Stable operation in over 1600℃without softening and deformation. Widespread application in the high temperature industry, metallurgy, glass, refractory and other fields.
Stability: The material can still keep its structure and performance in the sudden drop or increase in temperature, has good thermal shock performance. This advantage avoids the damage of the material due to the thermal expansion and contraction. This advantage applies to the fields of industrial equipment with frequent fluctuations in temperature and performs well in these fields.
Oxidation Resistance: The product has low tendency to be oxidized in the air and is chemically stable for a long time. This advantage applies to all industrial environments and can ensure that the device runs well in various industrial environments and will not be damaged due to oxidation, thus reducing the maintenance cost and the cost of raw material replacement for the enterprise, improving the production continuity and reliability.
What is the price of Alumina Grinding Ball?
The price of products of different series and specifications will be different.The price of each series of our products will vary according to the performance and purity.There are some relatively high price in terms of products with higher content and higher requirements for precision. For the specific price, you are welcome to consult our sales for detailed quotation according to your requirements.
What is the approximate service life of Alumina Grinding Ball?
Service life of our products will be influenced by operating environment, which includes the performance of medium they contacting with, operating period, operating temperature, pressure, friction frequency and intensity, etc. Normally, in conventional industry application, 92-serie service life could reach 1-2 years. While in the electronic component grinding field with high requirement of wear resistance, 99-series could be used more than 3 years if proper application and maintenance.
Of course, the specific service life will still fluctuate according to equipment using condition and operating regulations.
What precautions should be taken when using Alumina Grinding Ball?
Storage: our products should be stored in a dry and well ventilated warehouse. They are strictly prohibited from being rained and should not be damp to avoid performance damage caused by erosion by water.
Loading and unloading: They should be handled with care, strictly prohibited from violent collision, so as to avoid breakage.
Use: Strictly follow the equipment rules and operate carefully, and control the grinding time, speed, temperature and other parameters of equipment strictly to avoid wear and fracture of ceramic balls due to violent handling, and often check the ceramic balls in use, replace the severely worn and damaged ceramic balls in time.
Can you provide customisation services?
Certainly , Shandong Qishuai Wear Resistant Equipment Co.,Ltd. has a professional R&D and production team with strong customisation ability.
If you have any requirements for the size, performance characteristics (specific alumina content, special density or hardness requirements), or other special requirements for product colour and surface coating, please contact us, we are always welcome to offer you with the customisation service, and we can customise the whole link from product design, mould making to manufacturing in accordance with your exact requirements.
Should you have any enquiries regarding our products, please do not hesitate to contact us via the following methods:
Telephone:+86-533-7010227
WhatsApp:8615898737636 (Kella)
WhatsApp:8618953367229 (Penny)
WhatsApp:8613869372890 (John)
Email:qishuai@zbqishuai.cn
Address
Phoenix Industrial Park, Linzi District, Zibo City, Shandong Province, China
Tel
