CNC lathe machined precision alumina ceramic block
Description:
Superior machines ceramic workpieces in both the "green" (unfired) and sintered (fired) states. Sintered workpieces are much harder and denser than green ones and must be machined with diamond grinding tools. Instead of using traditional grinders, the shop often uses standard CNC milling machines and machining centers for these grinding operations. One striking example is a five-axis machining center used exclusively to produce the complex, tightly toleranced geometry that fire-hardened workpieces require. The volumetric accuracy of this machine has allowed the company to bid on jobs involving features with tolerances as small as ±0.0002 inch (0.005 mm).
Technical Parameters:
| Mechanical behavior | Unit | Al2O3 | SiC | Si3N4 | ZrO2 |
| Colour | ———— | Light yellow | Black | Black | White,Black |
| Density | g/cm3 | 3.95 | 3.15 | 3.2 | 6 |
| Bending strength | MPa | 300～400 | 400～500 | 800～1200 | 950～1200 |
| Elastic modulus E | GPa | 380 | 350 | 300-320 | 210 |
| Poisson's ratio | | 0.22 | 0.14 | 0.26 | |
| Hardness | Hv | 1800 | 2000～2500 | 1400～1700 |
1100～1300 |
| HRC | 80 | 85～90 | 75～80 | 70～75 |
| Fracture toughness | MPa·m1/2 | 3.0～4.0 | 3.0～4.0 | 5.0～7.0 | 8.0～10.0 |
| Maximum use temperature | ℃ | 1000 | 1300 | 400 | 400 |
| Thermal expansion coefficient | 10-6/℃ | 8.4 | 4 | 3.3 | 10.3 |
Advantages:
1) A variety of specifications available.
2) Satisfy various technical request.
3) Lower medium spoilage.
4) Good insulation performance and high temperature resistance.
5) Stiffness texture.
6) Used in all electric products, electric heating products and wear resistant machinery parts.
Application:
Ceramic sealing discs are widely used in a variety of water faucet, water tap, sanitary sealing system, regulating system, sealing valves, water /oil/gas pump, and so on.
More pictures:
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CNC Lathe 1800HV 80HRC Machinable Ceramic Block Precision Alumina Ceramic Block Images
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