| Feature: | Good Acid Resistance, Good Mechanical Strength, High Refractoriness, Low Thermal Conductivity, Permeability, Thermal Shock Resistance, Volume Stability, Long Time Materials |
|---|---|
| Production Process: | Vibration Molding |
| Refractoriness (℃): | 1580< Refractoriness< 1770 |
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Physical And Chemical Indicators Of Product
| Chemical Index | Silicon Carbide Pipe |
| Bulk density(g/cm3) | Porosity (%) |
| Porosity (%) | <0.1 |
| Bending strength(MPa) | 250(20ºC) |
| 280(1200ºC) | |
| Thermal conductivity(W/MK) | 45(1200ºC) |
| Thermal expansion(20-1000ºC) 10-6k-1 | 4.5 |
| Max. working temperature(ºC) | 1380 |
| PH Resistance | EXCELLENT |
| Moh's scale of thermal expansion | 13 |
| Chemical component | ||||
| SiC% | Fe2O3 | AI2O3% | Dissociative SI+SIO2% | Dissociative C% |
| ≥98 | ≤0.5 | ≤0.02 | ≤0.4 | ≤0.3 |
| Material | Component % | Temperature in common use °C | Characteristic |
| Recrystallized SiC | SiC 98 | 1400 | Good gas tightness,heat-resisting,strong concussion,excellent wear-resistantance.in the atmosphere of oxidation and reducing property,can be used to 1600°C. |
1, Moulding: Cold isostatic pressing(CIP)
2, Sintering: GPSN/RSSN
3, High strength and good compactness
4, Low thermal expansion coefficient
5, Excellent thermal shock resistance
6, No wetting by molten aluminum and non-ferrous metal
7, Good corrosion resistance
Matter Needing Attention
1, silicon carbide pipe texture is hard and brittle, thread with limited elasticity, installation and disassembly should be fully careful attention,
2, life and the use of temperature is very much related, generally in 1300ºC±50ºC can run 1500 working hours.
3, the heated material can not contain too much water, otherwise it will affect the life of the silicon carbon tube
4, silicon carbon tube is not suitable for working in a protective atmosphere, such as hydrogen. Thus affect the life of silicon carbide tube.
5the selection of the surface load of the silicon carbon tube changes with the temperature, and the selection of the appropriate heating power can extend the life of the siliconcarbon tube.
6, the silicon carbide tube should be cleaned between the internal and external furnace tubes before installation. Remove the debris between the threads of the silicon carbide pipe or that can cause short circuit, the conductive clip connection sheet should be tightly tightened, and the insulation sheet should be reliably insulated.
7, the installation can be electric oven, long-term need not use before also must oven,
8, spare silicon carbon tube should be placed in a dry, no atmosphere erosion place, to prevent aluminized end delixing.
SiC thermocouple protection tube Recommended Sizes
| OD(mm) | ID(mm) | Length(mm) |
| 16 | 8 | 300-600 |
| 22 | 12 | 300-800 |
| 28 | 16 | 300-1200 |
| 30 | 18 | 300-1000 |
| 45 | 25 | 300-1000 |
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