Vertical 1200C Three-Zone Tube Quenching Furnace
Technical Specifications
Model | VTL1200-1200-1200-I | VTL1200-1200-1200-II | VTL1200-1200-1200-III |
Power | 5.4 KW | 5.4 KW | 5.4 KW |
Furnace Tube Dimensions | Dia 60(OD) × 1300 mm | Dia 80(OD) × 1300 mm | Dia 100(OD) × 1300 mm |
Power Supply Voltage | 220V | ||
Number of Phases | Single phase | ||
Heating Elements | Domestic high-quality resistance wire (optional: Swedish Kanthal A1 imported resistance wire) | ||
Control Method | Yudian program temperature controller (standard). (Upgrading to imported instruments requires additional cost – optional）
FP93 from Shinko (Japan) Eurotherm Touch-screen controller | ||
Broken Thermocouple Protection & Indication | Yes | ||
Over temperature Protection | Yes | ||
Over current Protection | Yes | ||
Control Accuracy | ±1°C | ||
Trigger Type | Phase shift triggering | ||
Electrical Components | Zhejiang Chint | ||
Thyristor (SCR) | 106/16E – Siemens Semikron (Germany) | ||
Maximum Temperature | 1200°C | ||
Rated Temperature | 1100°C | ||
Heating Rate | ≤30°C/min (adjustable as required) | ||
Recommended Heating Rate | ≤15°C/min | ||
Thermocouple Type | K-type | ||
Heating Zone Length | 205 mm + 205 mm + 205 mm | ||
Electrical Certification | (not specified) | ||
External Surface Temperature | ≤45°C | ||
Vacuum Sealing Flange & Valves | 1. One stainless steel sealing flange and one stainless steel needle valve are installed at the top of the furnace body.
5. Optional corrosion-resistant digital vacuum gauge (measurement range: 3.8×10⁻⁵ to 1125 Torr) – no conversion factor needed for different gas types.
6. A hanging device with a maximum load capacity of 1000 g is mounted on the top flange, as shown in Figure 2. The sample is hung on the hook with suspension wire. Press the quenching rod, and the sample together with the suspension wire will drop into the quenching box. Before releasing the sample, argon gas at 5 PSI must be charged and the manual slide valve at the bottom of the furnace tube shall be opened. | ||
Quenching Container
| 1. A stainless steel container fixed at the bottom of the furnace tube holds the quenching liquid. | ||
Important Notes
The gas pressure inside the furnace tube must not exceed 0.02 MPa.
Since the gas cylinder internal pressure is high, a pressure reducing valve must be installed on the gas cylinder when introducing gas into the furnace tube. To ensure safety, it is recommended to use a pressure below 0.02 MPa.
When using a quartz tube as the furnace tube and the furnace temperature exceeds 1000°C, the furnace tube must not be under vacuum. The pressure inside the tube should be equivalent to atmospheric pressure.
The gas flow rate into the furnace tube must be less than 200 SCCM to avoid thermal shock to the hot tube from cold gas flow.
For experiments involving sample heating, it is not recommended to close both the vacuum valve and the gas inlet valve at the flange end. If it is necessary to close the valves during sample heating, the pressure gauge reading must be constantly monitored. If the pressure gauge reading exceeds 0.02 MPa, the exhaust valve must be opened immediately to prevent accidents (such as tube rupture or flange ejection).
