Laboratory 1200C Vacuum Hot Pressing Furnace
Applications
Widely used in production and experiments in ceramics, metallurgy, electronics, glass, chemical industry, machinery, refractory materials, new material development, special materials, building materials, and other fields.
Features
Door opening method: Front-opening and side-opening
Control accuracy: ±1°C; furnace temperature uniformity: ±3°C.
Easy operation: Programmable, PID auto-tuning, automatic heating, automatic soaking, automatic cooling – unattended operation. Optional computer communication for furnace operation (start, stop, pause heating, set temperature profile, store profile, historical curves, etc.). Software is provided free of charge – see computer control system.
Fast heating: Heating rate adjustable from 1°C/h to 40°C/min.
Energy saving: Furnace chamber made of imported fiber – high temperature resistance, excellent thermal shock resistance.
Corrosion resistance: The furnace body is finely powder-coated, resistant to corrosion and acids/alkalis. The furnace body is isolated from the chamber by air cooling; the shell temperature is near room temperature.
Dual-loop protection (over-temperature, over-pressure, over-current, thermocouple break, power failure, etc.).
Furnace chamber material: Imported refractory material – good insulation, high temperature resistance, excellent thermal shock resistance.
Technical Specifications
Parameter | 1200°C Model |
Maximum Operating Temperature | 1200°C |
Control Range | 80 to 1200°C |
Temperature Sensor | K-type thermocouple, measuring range 0–1320°C |
Furnace Chamber Dimensions (mm) | Φ200 × 200 (overall height not exceeding 1.8 m) |
Heating Element Installation Position | Vertically installed on both sides of the furnace chamber |
Temperature Control Accuracy | ±1°C (integrated circuit control, no overshoot) |
Furnace Temperature Uniformity | ±5°C |
Heating Rate | Adjustable: maximum 20°C/min, minimum 1°C/h |
Heating Elements | Silicon carbide rods |
Furnace Body | CNC machined, polished, pickled, phosphated, powder-coated and baked at high temperature. Two-color aesthetic finish – anti-oxidation, acid/alkali resistant, corrosion resistant, high-temperature resistant, easy to clean. |
Furnace Structure | Air-cooled double-layer structure with effective airflow guide plates to ensure full cooling circulation. Discharges hot air after cooling the heating element conductors – prevents high-temperature oxidation of conductors and ensures a good working environment. |
Pressure | 200 tons |
Pressure Adjustment | Digital manual adjustment; preset pressure for automatic pressing |
Press Type | Electric precision hydraulic press |
Pressure Display | Digital, unit: N (Newton) |
Stroke | Adjustable |
Pressure Holding | Equipped with imported solenoid valve – excellent pressure holding performance |
Furnace Mouth Sealing | 3–4 tapered soft sealing steps at the furnace mouth, with elastic high-temperature sealing strips on the steps, effectively absorbing expansion of refractory materials between the furnace mouth and loading table. |
Material Mold | (Provided by customer) |
Insulation Material | Three-layer insulation: alumina fiber wool, alumina fiber board, polycrystalline alumina fiber board – energy saving >80% compared to traditional furnaces |
Refractory Material | High-purity alumina zirconia-containing fiber board |
Furnace Outer Shell Temperature | <45°C under continuous long-term operation |
Protections | Integrated modular control unit with high accuracy. Dual-loop control and dual-loop protection, including protections against overshoot, over-regulation, under-regulation, broken thermocouple, phase loss, overvoltage, overcurrent, overtemperature, current feedback, soft start, etc. |
Control Method | Closed-loop SCR (thyristor) module triggering – phase-shift or zero-crossing control. Continuous adjustment of output voltage, current or power with constant voltage, constant current or constant power characteristics. Inner current loop and outer voltage loop – limits output current within rated range under sudden load or overcurrent conditions, ensuring stable operation and protecting heating elements from excessive current/voltage surges, achieving safe and reliable control and high accuracy. |
Displayed Parameters | Real-time temperature, segment number, segment time, remaining time, output power percentage, voltage, current, etc. |
Pushbuttons | Pushbutton life >100,000 cycles, with LED indicators. |
Temperature Profile Setting | Intelligent temperature control, pressure setting, data report, historical curve and other functions. |
Multiple Curve Input | 30-segment programmable control. Configurable as: one curve of 30 segments, two curves of 14 segments each, three curves of 9 segments each, five curves of 5 segments each. Multiple curves can be stored and called arbitrarily during use. |
Communication Interface | Computer system can control and display temperature curves. |
Standard Accessories | Two sets of electrode rods, one pair of crucible tongs, one pair of high-temperature gloves. |
Warranty & Coverage | One-year free warranty for the furnace. Heating elements are not covered. |
Important Notes
To avoid affecting the furnace's service life, we recommend a maximum heating and cooling rate of 10–20°C/min (excessively fast heating at high temperatures will shorten the life of heating elements).
After using this hot press furnace for a period of time, small cracks may appear in the furnace chamber. This is normal and does not affect operation. They can be repaired with alumina coating.
Corrosive gases are not recommended. If highly corrosive gases such as S or Na compounds must be introduced, please inform us in advance so that the furnace chamber can be specially treated.
Do not allow high-temperature melt to leak onto the furnace bottom. Use a base plate or alumina powder isolation as a precaution.
The instrument should be placed in a well-ventilated, dry area.
