GSL-1700X-HV-LD High-Vacuum Tube Furnace with MoSi2 Heating Elements, Up to 1700°C and 10-8 mbar Vacuum
The GSL-1700X-HV-LD is engineered for precise heat treatment and sintering of advanced materials requiring high temperatures combined with high vacuum conditions. It is particularly suited for processes demanding controlled atmospheres and minimal contamination, such as research and development in ceramics, metals, and electronic materials.
This tube furnace integrates a high-vacuum station featuring a diaphragm pump and a turbomolecular pump, enabling vacuum levels down to less than 10-8 mbar under leak-free conditions. The furnace tube is made from 99.8% high-purity alumina ceramic, providing excellent thermal and chemical stability during operation.
Key Features
- Maximum temperature of 1700°C for short durations (less than 1 hour) and continuous operation at 1600°C.
- Specified vacuum operation temperature limit of 1400°C; users should confirm exact limits with the manufacturer.
- MoSi2 heating elements provide efficient and stable heating within a 457 mm heating zone.
- Precision SCR temperature controller with 30 programmable segments, ±1°C accuracy, PID auto-tune, and over-temperature protection.
- High-vacuum station includes German-made Pfeiffer turbomolecular pump with automatic speed control and self-protection features.
- Vacuum gauges for mechanical and high-vacuum measurement (10-8 to 103 mbar range) ensure accurate monitoring.
- Double-layer steel casing with cooling fans maintains external surface temperature below 55°C for safety.
Technical Specifications
| Parameter | Specification |
|---|---|
| Tube Material | 99.8% High-purity Al2O3 ceramic |
| Tube Dimensions (OD × ID × Length) | 82 mm × 73 mm × 1000 mm |
| Refractory Lining | 1750-grade alumina fiber insulation |
| Heating Elements | Molybdenum disilicide (MoSi2) |
| Maximum Temperature | 1700°C (less than 1 hour) |
| Continuous Operating Temperature | 1600°C |
| Vacuum Operating Temperature Limit | 1400°C (confirm with manufacturer) |
| Heating Zone Length | 457 mm |
| Constant Temperature Zone | 150 mm with ±1°C uniformity at 1600°C |
| Temperature Controller | SCR power control, 30 programmable segments, PID auto-tune, ±1°C accuracy, RS-485 port |
| Heating/Cooling Rate | 10°C/min below 1200°C; 5°C/min above 1200°C |
| Furnace Power Input | AC 220V, single phase, 50/60 Hz |
| Maximum Power Consumption | 5 kW |
| Vacuum Station Pumps | Diaphragm pump and Pfeiffer turbomolecular pump |
| Vacuum Range | 1000 mbar to <10-6 mbar (cold conditions) |
| Ultimate Vacuum Pressure | Less than 10-8 mbar (leak-free) |
| Vacuum Pumping Speeds | N2: 33 L/s; He: 39 L/s; H2: 32 L/s |
| Vacuum Station Power Input | AC 110V or 220V, switchable, 50/60 Hz |
| Vacuum Station Power Consumption | 100 W normal, 110 W max |
Typical Applications
Ideal for sintering ceramics, heat treating metals, and processing advanced materials requiring high vacuum and controlled atmospheres. Suitable for research labs and industrial R&D focused on material properties and phase transformations.
Configuration & Operating Notes
The furnace includes a double-layer steel casing with cooling fans to maintain safe external temperatures. The high-vacuum station features an LCD control panel with one-button start for pumps and automatic speed control based on vacuum conditions.
Users must install a two-stage pressure regulator on gas cylinders to limit supply pressure below 3 PSI and restrict gas flow rates to under 200 SCCM. Vacuum operation is recommended only up to 1400–1500°C; confirm exact limits with the manufacturer to ensure safe use.
Optional advanced temperature controllers and software packages are available for enhanced process control and data communication.
