New professional ceramic polishing ball
Negotiable /Kilogram
Min.Order:30 Kilograms
Company information
We are manufacturer of bearing balls from Shandong, China. Our main products include stainless steel ball, chrome steel ball, carbon steel ball, plastic ball, glass ball, and ceramic ball etc.
Specifications
1. High temperature resistant. Use temperatures up to 2400 ℃
2. High density
3. Low thermal conductivity
4. Chemical inertness
5. Resistance to molten metals
6. Lonic electical conduction
7. Wear resistance
8. High fracture toughness
9. High hardness
New professional ceramic polishing ball
Features of Ceramic Ball:
1,59% lighter than steel ball, which means less centrifugal force and less wear on the groove during high speed and acceleration.
2. 44% larger elastic modulus, which means less deformation under load
3. Harder with Rockwell hardness as 92
4. Smaller friction coefficient
5. Only 1/4 coefficient of thermal expansion of steel, can endure sharp fluctuation of temperature
6. Superior surface finish can be achieved, Ra could be 4~6 nm
7. Can endure high temperature with high hardness and strength up to 1050°C
8. Never rust, and can roll without lubrication.
9. More corrosion resistant than steel.
Table of material performance
Properties | Unit | AISI 52100 | AISI 440C | ZrO2 | Si3N4 |
Density
| G/cm³ | 7.85 | 7.9 | 6.0 | 3.3 |
Thermal expansion coefficient
| 10-6/k | 11 | 17 | 9.6 | 3.2 |
Elasticity modulus
| GPa | 208 | 200 | 210 | 320 |
Poisson's ratio
| 0.3 | 0.3 | 0.3 | 0.26 | |
Hardness
| 800 | 700 | 1250 | 1500 | |
Fracture strength
| Mpa | 2400 | 2600 | 1000 | 900 |
Bending toughness
| Mpam1/2 | 20 | 25 | 10 | 7 |
Working temperature
| ℃ | 120 | 150 | 800 | 1000 |
Corrosion resistance
| none | little | power | power | |
Magnetism
| have | have | none | none | |
Size stability
| no good | no good | good | good | |
Conductivity
| conductor | conductor | insulator | insulator |
Application of Zirconia ball
Si3N4 be first choice for high-demand bearing ball material and valve ball. Si3N4 ball can also be used as valve ball and metering ball in chemical pump, high-temperature pump, metering pump. Si3N4 ball can also be used in linear slider for high temperature and corrosion resistance.
Quality control
Packing