OTF-1500X-80-VTHV 1500°C Vacuum Vertical Tube Furnace with Sample Rotation and Manual Lifting System
The OTF-1500X-80-VTHV furnace is engineered for advanced laboratory processes requiring high-temperature vacuum treatment with uniform sample heating. It is ideal for sintering and heat treatment of materials under controlled vacuum or atmosphere conditions, ensuring consistent thermal exposure through its rotating crucible design. The vertical tube configuration facilitates easy installation and operation in limited lab spaces.
This vertical tube furnace incorporates a crucible suspended inside an 84 mm outer diameter mullite tube, which can be rotated by a DC motor under vacuum to achieve uniform sintering. The crucible is also manually liftable after opening the flange, allowing convenient sample changes without complex disassembly. The furnace structure employs a double-layer steel casing with air cooling to maintain external surface temperatures below 65°C, enhancing safety during operation.
Key Features
- Maximum operating temperature of 1500°C achievable within 30 minutes, with continuous operation up to 1400°C.
- Rotatable crucible inside the vacuum tube driven by a DC motor for uniform sample heating.
- Manual lifting mechanism for the crucible enables easy sample loading and unloading.
- Water-cooled stainless steel flanges paired with a 16 L/min recirculating water chiller included for thermal management.
- Advanced temperature control with 30 programmable segments, PID auto-tuning, and five K-type thermocouples for precise zone monitoring.
- Vacuum capability down to 10^-3 torr with mechanical pump and 10^-5 torr with turbopump (pumps sold separately).
- Robust heating elements made of Fe-Cr-Al alloy doped with molybdenum and 1500°C grade silicon carbide tubes.
Technical Specifications
| Parameter | Specification |
|---|---|
| Maximum Temperature | 1500°C (within 30 minutes) |
| Continuous Operating Temperature | 1400°C |
| Heating Rate | ≤ 10°C/min |
| Heating Elements | 12 pcs 1500°C grade SiC tubes; Fe-Cr-Al alloy doped with Mo |
| Tube Dimensions and Material | Mullite tube (USA made), OD 84 mm × ID 72 mm × Length 1393 mm |
| Heating Zone Length | 440 mm total; 150 mm constant temperature zone ±1°C |
| Temperature Control | 30 programmable segments, PID auto-tune, ±1°C accuracy, 5 K-type thermocouples, RS485 communication |
| Vacuum Level | 10^-3 torr (mechanical pump), 10^-5 torr (turbopump) |
| Power | 5.5 kW |
| Voltage | AC 208-240V, Single Phase, 50/60 Hz |
| Cooling System | Water cooling flanges with included 16 L/min recirculating water chiller |
| Crucible Handling | DC motor-driven rotation under vacuum; manual lifting for sample exchange |
Typical Applications
This furnace is suited for vacuum sintering, heat treatment, and material processing requiring uniform temperature distribution under controlled atmosphere. It is commonly used in ceramics research, advanced material synthesis, thin film preparation, and semiconductor processing where precise thermal profiles and vacuum conditions are critical.
Configuration & Operating Notes
The furnace includes water cooling flanges and a recirculating water chiller for immediate operation. The power cable is provided without a plug; users must source a compatible plug locally. Optional accessories such as a laptop with LabVIEW-based temperature control software and wireless remote control are available for enhanced process management at additional cost. Vacuum pumps are not included and must be purchased separately to achieve specified vacuum levels.
