Quartz Crucible
- Electrical Resistivity(350°C,omh-cm): 7*107
- Insulating Strength(20°C,KV/cm): 250~400
- Dielectric Constant: 3.7
Quartz crucible has the advantages of high purity, high temperature resistance, high dimensional accuracy, good heat preservation, energy saving, stable quality, etc., and its application is more and more extensive. The inspection of quartz crucibles is a very important part, and the detection of quartz crucibles is developing towards the field inspection direction!
We have excellent technology development capabilities, the high purity fused quartz crucibles for the solar grade mono-crystalline silicon application. We can also produce special types according to client’s technical drawing.
Advantage of Quartz crucible for melting:
1. High purity,Sio2>99.99%
2. Resistance high temperature and corrosion
3. Used for industry,laboratory
4. Electrical arc crucible 8″-24″, used for Pull monocrystalline silicon
5. Small size, used for laboratory and other industry
6. It is apply to semiconductor and solar energy
Application of Quartz crucible for melting:
1. Chemical Industries
2. Electric Light Source
3. Laboratories
4. Medical equipment
5. Metallurgy
6. Optical
7. Photovoltaic
8. Photo communications
9. Research
10. Schools
11. Semiconductor
12. Solar
| 1. Purity | SiO2 content is more than 99.99% |
| 2. Temperature | Softening point temperature is about 1730 degrees Celsius ,
1100 degrees Celsius in a long time used ,short-time maximum use temperature is up to 1450 degrees Celsius |
| 3. Anti-corrosion | Quartz glass is acidic materials, except hydrofluoric acid
and 300 degrees Celsius thermal phosphoric acid, on any other acids were shown to be inert, is the best anti acid materials. At room temperature, alkali and salt on quartz glass corrosion degree is minimal |
| 4. Transmittance good performance | Compare to ordinary silicate glass, transparent quartz glass
in the whole wavelength head excellent permeability. In the infrared spectrum through than ordinary glass; in the visible region, quartz glass transmittance is relatively high ,above 85-90%. In the UV spectral region especially in the ultraviolet region, the spectral transmission is much better than other glass,about 80% |
| 5. Good electrical insulation properties | Quartz glass with high dielectric strength and very low electrical
conductivity, even in high temperature, high pressure and high frequency,it can still maintain high dielectric strength and resistance, in the application of the band almost no dielectric loss, therefore the quartz glass is an excellent high temperature dielectric insulating material |
| 6.Thermal stability | The thermal expansion coefficient of quartz galss is extremely
small ,it can be able to adapt drastic temperature changes |
Precision
| Range of OD | OD | WT | Siding | Out of Round | Bow/1000mm |
| 10mm Max | ±2.00% | ±10% | 12% | 2.0% | 2.0mm |
| 10 – 20mm | ±1.25% | ±8% | 10% | 1.5% | 2.0mm |
| 20 – 30mm | ±1.00% | ±10% | 15% | 1.5% | 2.0mm |
| 30 – 50mm | ±1.00% | ±10% | 15% | 1.5% | 2.0mm |
| 50 – 100mm | ±1.00% | ±12% | 15% | 2.0% | 2.0mm |
| 100 – 200mm | ±1.00% | ±12% | 15% | 2.0% | 2.0mm |
Corrosion Amount
| H2SO4 | Density 1.84,2h,20°C,g/cm2 | 1.4*10-8 |
| HNO3 | Density 1.4,2h,20°C,g/cm2 | 5*10-8 |
| HCL | Density 1.19,2h,20°C,g/cm2 | 15*10-8 |
| NaOH | 1%,2h,110°C,g/cm2 | 166*10-6 |
| KOH | 1%,2h,98°C,g/cm2 | 68*10-6 |
Thermal Properties Mechanical Properties
| Density g/cm3 | 2.2 |
| Compression Strength N/mm2 | 1100 |
| Bending Strength N/mm2 | 67 |
| Tension Strength N/mm2 | 48 |
| Micro Hardness N/mm2 | 8600~9800 |
| Moh’s hardnessMoh’s hardness | 5.5~6.5 |
