Milky quartz tube for far infrared heating
Far infrared heating field, such as: heater, disinfection cabinet, microwave oven and other types of electric heating appliances.
Product Feature：
It is a kind of opaque opalescent quartz glass processed by a special process, whose appearance is opalescent. It can absorb almost all visible and near-infrared light from electric heating wire radiation, and can convert it into far-infrared radiation with precise size and strong thermal stability.
Typical Size:（mm）
| O.D. Fange | O.D. Tolerance | Thickness | WT Tolerance | Out of Round | Siding | Bow |
|---|---|---|---|---|---|---|
| 3<OD≦10 | ±0.10 | 1.0∼2.0 | ±0.15 | 2% | 0.12 | 0.15% |
| 10<OD≦20 | ±0.20 | 1.0∼2.5 | ±0.20 | 1.25% | 0.12 | 0.15% |
| 20<OD≦30 | ±0.25 | 1.5∼3.0 | ±0.20 | 1.25% | 0.12 | 0.15% |
Mechanical & Thermal Properties：
| Density（20°C kg/m3） | Thermal Expansion (200 ~300°C C-1) | Softening Point (°C ) |
|---|---|---|
| 2.2*103 | 5.6*10-7 | 1670 |
Impurity Value: (ppm)
| Impurity | Na | K | Mg | Li | Ca | Fe | Al | Ti | Cu |
|---|---|---|---|---|---|---|---|---|---|
| typical value | 0.1 | 0.02 | 0.01 | 0.01 | 0.01 | 0.01 | 0.05 | 0.01 | 0.01 |
OH Content: (ppm)
| Typical Value without Baking | After baking |
|---|---|
| 200 | ~ |
Optical Properties:
