GSL-1700X-50VTB Hybrid High Temperature Tube and Box Furnace with 2″ Alumina Tube, Up to 1700°C
The GSL-1700X-50VTB is engineered for demanding thermal processing tasks requiring both vacuum and atmospheric control environments. It combines a box furnace’s spacious heating chamber with a top-inserted 2-inch diameter alumina tube, enabling versatile heat treatment of new materials, including solid oxide fuel cell (SOFC) coin cells. This hybrid design facilitates treatments under vacuum or controlled gas atmospheres up to a maximum temperature of 1700°C.
The furnace chamber measures 150 x 150 x 150 mm (6″ x 6″ x 6″) and is insulated with high purity 1800°C grade fibrous alumina to ensure thermal efficiency. Heating is provided by four U-shaped molybdenum disilicide (MoSi2) elements rated for 1800°C operation. The alumina processing tube, 50 mm inner diameter and 40 mm outer diameter with a length of 1000 mm, is inserted from the top and sealed with vacuum-tight flanges equipped with double silicone high-temperature O-rings, needle valves, and a vacuum gauge for immediate use.
Key Features
- Hybrid box and tube furnace design with a 2″ alumina processing tube for vacuum or atmosphere-controlled treatments.
- High precision PID temperature control via SCR power controller with ±1°C accuracy and 30 programmable segments.
- Heating chamber insulated with 1800°C grade fibrous alumina and equipped with four U-shaped MoSi2 heating elements.
- Vacuum sealing flanges with double silicone O-rings, needle valves, and vacuum gauge included for vacuum levels down to 50 mTorr (mechanical pump) or 10⁻⁵ torr (turbo molecular pump).
- 4″ diameter alumina crucible placement around the tube for treatments in air.
- RS485 communication port for optional PC control with an additional MTS-02 control module.
- Maximum heating temperature of 1700°C for short durations and controlled heating/cooling rates.
Technical Specifications
| Parameter | Specification |
|---|---|
| Furnace Structure | Double-layer steel casing with 1800°C grade fibrous alumina insulation |
| Heating Chamber Dimensions | 150 x 150 x 150 mm (6″ x 6″ x 6″) |
| Heating Elements | 4 pcs U-shaped MoSi2 elements rated for 1800°C |
| Processing Tube | Alumina ceramic, 50 mm ID, 40 mm OD, 1000 mm length |
| Temperature Control | PID via SCR power controller, ±1°C accuracy, 30 programmable segments |
| Power Consumption | Maximum 4 kW |
| Input Voltage | Single Phase, 220 V AC, 50/60 Hz |
| Normal Operating Temperature Range | 800 – 1600°C |
| Maximum Operating Temperature | 1700°C (for less than 1 hour) |
| Heating/Cooling Rate | 5°C/min above 1200°C; 10°C/min below 1200°C |
| Vacuum Capability | 50 mTorr with mechanical pump; 10⁻⁵ torr with turbo molecular pump (pump not included) |
| Included Accessories | Vacuum sealing flanges with double silicone O-rings, two stainless steel needle valves, dial vacuum gauge, four alumina crucibles (15 mm Dia x 15 mm H), two fibrous ceramic tube blocks |
Typical Applications
This furnace is ideal for heat treatment processes requiring precise temperature control under vacuum or controlled atmospheres, such as sintering, annealing, and testing of solid oxide fuel cells (SOFC) coin cells. It is suitable for research and development of new materials and advanced ceramics.
Configuration and Operating Notes
The furnace includes vacuum-tight flanges with integrated valves and a vacuum gauge for immediate operation. Optional accessories include a PC control module (MTS-02) for remote operation via RS485 communication and various fittings such as 304SS Swagelok® tube fittings or KF25 adapters to enhance vacuum efficiency. The vacuum pump is not included and must be ordered separately. Proper insertion of ceramic tube blocks is required before heating to block heat radiation inside the tube. Built-in over-temperature alarms and protections enable unattended operation with safety.
