VBF-1200S-VC Vacuum Crucible Furnace with Quartz Chamber 4″ OD x 8″ H
The VBF-1200S-VC vacuum crucible furnace is engineered for precise sintering and heat treatment of samples up to 3 inches in diameter under controlled vacuum environments. Its design incorporates a quartz tube chamber allowing for contamination-free processing and excellent thermal stability. This furnace is ideal for laboratory applications requiring high-temperature vacuum conditions with accurate temperature control.
The furnace features a stainless steel 316 case resistant to corrosion and a heating chamber dimensioned at 4.7 inches diameter by 8 inches height (120 mm ID x 200 mm H). The quartz processing tube, with an outer diameter of 4 inches and length of 8 inches, is sealed at one end and equipped with a flange, needle valve, and ports for vacuum gauge and pump connections. This setup supports vacuum levels down to 10-2 torr using a mechanical pump and 10-5 torr with a turbo pump, enabling a wide range of vacuum processing conditions.
Key Features
- Maximum temperature of 1100°C for short durations (less than 1 hour) and continuous operation below 1000°C.
- Dual digital temperature controllers housed separately for safe remote operation with ±1°C accuracy and PID auto-tuning.
- Quartz tube chamber with flange, 1/4″ gas inlet valve, KF16 port for vacuum gauge, and KF25 port for vacuum pump connection.
- Heating power of 1.5 kW supplied via 110 VAC single phase (220 VAC optional on request).
- Maximum heating rate of 20°C per minute for efficient temperature ramping.
- RS485 communication port for integration with PC-based control systems.
- Includes two Omega K-type thermocouples for precise temperature measurement and safety cut-off features.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | VBF-1200S-VC |
| Maximum Temperature | 1100°C (short term <1 hour), continuous <1000°C |
| Heating Rate | Up to 20°C/min |
| Heating Chamber Dimensions | 4.7″ diameter x 8″ height (120 mm ID x 200 mm H) |
| Quartz Tube Dimensions | 4″ OD x 3.7″ ID x 8″ L (100 mm OD x 94 mm ID x 250 mm L) |
| Power Supply | AC 110V, Single Phase, 50/60 Hz (220V optional) |
| Power Consumption | 1.5 kW max |
| Temperature Control | Dual digital controllers with PID auto-tune, ±1°C accuracy, 30 programmable segments |
| Vacuum Ports | KF16 port for vacuum gauge, KF25 port for vacuum pump connection |
| Vacuum Level | 10-2 torr (mechanical pump), 10-5 torr (turbo pump) |
| Safety Features | Overheat protection, broken thermocouple detection, power cut-off |
| Communication Interface | RS485 port for PC control |
| Case Material | Stainless Steel 316 (anti-corrosive) |
Typical Applications
This vacuum crucible furnace is suitable for sintering ceramics, metals, and composite materials requiring vacuum atmosphere to prevent oxidation or contamination. It is widely used in materials research, semiconductor processing, and advanced ceramics development where precise temperature control and vacuum conditions are critical.
Configuration & Operating Notes
The furnace includes the quartz tube with flange, needle valve, KF16 and KF25 ports, and two Omega K-type thermocouples. The temperature controller is housed separately for operator safety and features programmable segments and automatic tuning. Optional accessories include anti-corrosive digital vacuum gauges and bellows tubes for enhanced vacuum system integration. Users should ensure proper vacuum pump compatibility and observe safety precautions when operating at high temperatures and vacuum levels.
